CN206833015U - Ocean controllable source time-frequency electromagnetic data and marine seismic acquisition system - Google Patents
Ocean controllable source time-frequency electromagnetic data and marine seismic acquisition system Download PDFInfo
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- CN206833015U CN206833015U CN201720260103.0U CN201720260103U CN206833015U CN 206833015 U CN206833015 U CN 206833015U CN 201720260103 U CN201720260103 U CN 201720260103U CN 206833015 U CN206833015 U CN 206833015U
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Abstract
The application embodiment provides a kind of ocean controllable source time-frequency electromagnetic data and marine seismic acquisition system.Wherein, the system includes：Electric dipole current source, air gun source and a plurality of cable, wherein：Electric dipole current source, controllable source time-frequency electric field data and three-component controllable source time-frequency magnetic field data are produced for being excited in marine site to be measured；Air gun source, three-dimensional component of marine seismic data and seawater wave pressure force data are produced for being excited in marine site to be measured；Multiple electric-field sensors with unpolarizable electrode, three-component magnetic field sensor, three-component seismic data sensor, three-component attitude transducer, hydrophone are provided with cable, for gathering controllable source time-frequency electric field data, three-component controllable source time-frequency magnetic field data, three-dimensional component of marine seismic data and seawater wave pressure force data；Electric layer is provided with cable.The system is powered by electric layer to the electronic device on cable, solves the troublesome technical problem of power supply present in existing apparatus.
Description
Technical field
The application is related to technical field of geophysical exploration, more particularly to a kind of ocean controllable source time-frequency electromagnetic data and sea
Foreign system for acquiring seismic data.
Background technology
During geophysical exploration, when especially carrying out geological prospecting research to subsea strata, it is often necessary to same
When frequency electromagnetic field and three-dimensional component of marine seismic data when gathering the ocean controllable source in marine site to be measured.And then can be according to gathering
Frequency electromagnetic field and three-dimensional component of marine seismic data during the ocean controllable source arrived, joint inversion is carried out, so as to marine site to be measured
In marine minerals, petroleum resources, methane hydrate etc. be predicted and evaluate.
Frequency electromagnetic field and the acquisition method of three-dimensional component of marine seismic data typically have following several during existing ocean controllable source
Kind.One kind is controllable source electromagnetism and system for acquiring seismic data.Wherein, the system is by being placed in three or more than three towing cables
Electric-field sensor, three-component magnetic field sensor, hydrophone with three-component seismic data sensor group into Measuring Oceanic three
Component magnetic field component, electric field component and ocean multi-component earthquake data along cable direction and vertical cable directional spreding.But
It is that the system needs to set power supply to provide power supply for the electronic device on towing cable in addition.It is used when again due to specific implementation
Towing cable is very long, typically all arrives dozens of kilometres up to several kilometers.In order to ensure that the electronic device of towing cable tail end and sensor are closed
Suitable operating voltage and operating current, needed in the power that towing cable top is laid very big.And powerful power supply in itself can
Electromagnetic interference is produced to the electronic device in towing cable and sensor.And then the accuracy and reliability of gathered data can be influenceed.Separately
Frequency electromagnetic field and four component earthquake data acquisition are mainly to be realized by subsea remote control acquisition station during a kind of ocean controllable source.Also
It is the data collecting system realized mainly by sea-floor electromagnetic data and four component earthquake data acquisition cable to have a kind of.But
The only pull-type cable system collection simple component electric field data of current experiment of putting into production, and the system can only gather an edge
The electric field component in cable direction, it is impossible to gather any magnetic-field component data.In addition, its electrode along cable directional spreding of the system
It is nor equally distributed.Such as the electrode density on the cable near acquisition vessel is larger, and away from acquisition vessel
Cable on electrode be just distributed it is very sparse.Therefore, the data error collected compares larger.Also, the system is same
Sample also needs to the initiating terminal setting large power supply in cable to the electronics on cable, and equally there is also high-power electricity
Interference problem of the source to electronic device.
In summary, the acquisition method of frequency electromagnetic field and marine seismic data during existing ocean controllable source, specific implementation
When, high-power power supply trouble over long distances often be present, frequency electromagnetic field and marine seismic data during the ocean controllable source collected
The low technical problem of poor accuracy, reliability.
In view of the above-mentioned problems, not yet propose effective solution at present.
Utility model content
The application embodiment provides a kind of ocean controllable source time-frequency electromagnetic data and marine seismic acquisition system,
It is high-power over long distances present in the acquisition method of frequency electromagnetic field and marine seismic data during solving existing ocean controllable source
Power supply trouble, frequency electromagnetic field and marine seismic data poor accuracy, reliability low technology during the ocean controllable source collected
Problem.
The application embodiment provides a kind of ocean controllable source time-frequency electromagnetic data and marine seismic acquisition system,
Including：
Electric dipole current source, air gun source and a plurality of cable, wherein：
The electric dipole current source, for producing excitaton source time-frequency electromagnetic signal, the excitaton source time-frequency electromagnetic signal is used for
Frequency electromagnetic field when producing controllable source is excited in the following medium in marine site to be measured and seabed, wherein, the frequency electromagnetic field during controllable source
Including controllable source time-frequency electric field data and three-component controllable source time-frequency magnetic field data；
The air gun source, for producing earthquake source signal, the earthquake source signal is used in marine site to be measured and sea
Generation marine seismic signals are excited in the following medium in bottom, wherein, the marine seismic signals include：Three-dimensional component of marine seismic data
With seawater wave pressure force data；
Multiple electric-field sensors with unpolarizable electrode are provided with every cable, wherein, on same cable
Two adjacent electric-field sensors are used to gather the controllable source time-frequency electric field data along cable direction；
Three-component magnetic field sensing is provided with the cable between adjacent two electric-field sensor on the same cable
Device, for gathering three-component controllable source time-frequency magnetic field data；
Cable between the three-component magnetic field sensor and the electric-field sensor is provided with earthquake data acquisition group, its
In, the earthquake data acquisition group includes：
Three-component attitude transducer, for gathering three-component attitude data；
Three-component seismic data sensor, for gathering the three-dimensional component of marine seismic data；
Hydrophone, for gathering the seawater wave pressure force data；
Electric layer is provided with every cable, wherein, the electric layer is used for for the electric field on the cable
Sensor, the three-component magnetic field sensor, the three-component attitude transducer, the hydrophone and the 3-component earthquake number
The power supply needed for work is provided according to sensor.
In one embodiment, the electric layer is made up of friction nanometer generating flexible material.
In one embodiment, the spacing between adjacent two electric-field sensor on same cable be 10 meters extremely
50 meters；The spacing between three-component magnetic field sensor and electric-field sensor on same cable is more than or equal to 5 meters.
In one embodiment, a plurality of cable is symmetrical and be arranged in parallel, wherein, between adjacent two lines cable
Spacing is more than or equal to 25 meters.
In one embodiment, in the case where the air gun source is multiple air gun sources, the multiple air gun shake
Source is symmetrical arranged.
In one embodiment, the length of the electric dipole current source is 300 meters to 500 meters.
In one embodiment, the electric layer peripheral hardware matcoveredn, wherein, the protective layer draws material system by Kev
Into.
In one embodiment, the system also includes towing cable ship, wherein, it is the cable, the air gun source, described
Tail end of the electric dipole current source respectively with the towing cable ship is connected.
In one embodiment, the system also includes electrical energy storage device, the electrical energy storage device and the hair
Electric layer is connected, for storing electric energy caused by the electric layer.
In one embodiment, the three-component seismic data sensor includes at least one of：
Three-component analog detector, three-component digital geophone, three-component accelerometer.
In one embodiment, the three-component magnetic field sensor is coil type three-component magnetic field sensor, or, magnetic flux
Gate-type three-component magnetic field sensor.
In one embodiment, the electric-field sensor on the cable and the electric field sensing of relative position on other cables
Device, for gathering the controllable source time-frequency electric field data in vertical cables direction.
In the application embodiment, by setting electric layer in the outer surface of cable, the mechanical energy of cable is changed into
Electric energy is powered to cable, is avoided and is set large power supply to be powered caused interference to cable in addition, is solved existing
Existing long range big work(when being embodied during some ocean controllable source in the acquisition method of frequency electromagnetic field and marine seismic data
Rate power supply trouble, frequency electromagnetic field and marine seismic data poor accuracy, reliability low skill during the ocean controllable source collected
Art problem, the technology effect of frequency electromagnetic field and three-dimensional component of marine seismic data when having reached relatively accurate, highly effective gathering ocean controllable source
Fruit.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the ocean controllable source time-frequency electromagnetic data and marine seismic acquisition system according to the application embodiment
Composition structure chart；
Fig. 2 is the ocean controllable source time-frequency electromagnetic data and marine seismic acquisition system according to the application embodiment
The structural representation of middle cable；
Brief description of the drawings：1st, towing cable ship, 2, electric dipole current source, 3 and 5, electric-field sensor, 4, three-component magnetic field sensor, 6,
Air gun source, 7, earthquake data acquisition group, 8, three-component attitude transducer, 9, hydrophone, 10, three-component seismic data sensing
Device, 11, electric layer, 12, protective layer.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.It is common based on the embodiment in the application, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, it should all belong to the application protection
Scope.
The acquisition method of frequency electromagnetic field and marine seismic data during in view of existing ocean controllable source, generally require online
The initiating terminal of cable separately sets power supply and the electronic device on cable is powered.When it is implemented, again due to the cable that uses often
It is long, typically all it is up to dozens of kilometres；And the supply lines of cable inner itself has certain resistance, therefore the electricity on cable
Pressure and electric current can reduce with the increase for the distance for leaving power supply.In order to ensure the electronic device to cable tail end, such as three
Component attitude transducer, electric-field sensor, three-component magnetic field sensor, three-component seismic data sensor and hydrophone etc. provide
Normal operating voltage and operating current, it usually needs supplied from powerful power supply each electronic device on cable
Electricity.However, because powerful voltage and current often produces obvious excitaton source time-frequency electromagnetic signal, interference profile
In the electronic device of cable, and then the electromagnetic data precision that electronic device collects can be influenceed.Finally, existing ocean is caused
When it is implemented, power supply trouble being often present, gathering in the acquisition method of frequency electromagnetic field and marine seismic data during controllable source
The technical problem of frequency electromagnetic field and marine seismic data poor accuracy during the ocean controllable source arrived.For producing above-mentioned technical problem
Basic reason, the application consider can along cable cable outer surface set electric layer, and then can by electric layer from
It is about to the mechanical energy that cable swings with seawater or pulled in the seawater when moving ahead and changes into electric energy, then to the electronic device on cable
It is powered.So as to avoid due to, to electromagnetic interference caused by electronic device, solving existing sea using large power supply
The ocean controllable source time-frequency electricity collected during foreign controllable source present in the acquisition method of frequency electromagnetic field and marine seismic data
Magnetic field and the technical problem of marine seismic data poor accuracy.
Based on above-mentioned thinking thinking, the application embodiment provides a kind of ocean controllable source time-frequency electromagnetic data and ocean
System for acquiring seismic data.Its basic structure forms, and refers to Fig. 1 ocean controllable source time-frequency electromagnetic data and offshore earthquake number
According to the structural representation for forming structure chart and Fig. 2 cable of acquisition system.The ocean controllable source that the application embodiment provides
Time-frequency electromagnetic data and marine seismic acquisition system, it can specifically include：
Electric dipole current source 2, air gun source 6 and a plurality of cable, wherein：
The electric dipole current source 2, for producing excitaton source time-frequency electromagnetic signal, the excitaton source time-frequency electromagnetic signal is used for
Frequency electromagnetic field when producing controllable source is excited in the following medium in marine site to be measured and seabed, wherein, the frequency electromagnetic field during controllable source
Including controllable source time-frequency electric field data and three-component controllable source time-frequency magnetic field data；
The air gun source 6, for producing earthquake source signal, the earthquake source signal is used in marine site to be measured and sea
Generation marine seismic signals are excited in the following medium in bottom, wherein, the marine seismic signals include：Three-dimensional component of marine seismic data
With seawater wave pressure force data；
Multiple electric-field sensors 3 with unpolarizable electrode are provided with every cable, wherein, on same cable
Two adjacent electric-field sensors 3 are used to gather the controllable source time-frequency electric field data along cable direction；
Three-component magnetic field sensing is provided with the cable between adjacent two electric-field sensor 3 on the same cable
Device 5, for gathering three-component controllable source time-frequency magnetic field data；
Cable between the three-component magnetic field sensor 5 and the electric-field sensor 3 is provided with earthquake data acquisition group
7, wherein, the earthquake data acquisition group 7 includes：
Three-component attitude transducer 8, for gathering three-component attitude data；
Three-component seismic data sensor 10, for gathering the three-dimensional component of marine seismic data；
Hydrophone 9, for gathering the seawater wave pressure force data；
Electric layer 11 is provided with every cable, wherein, the electric layer 11 is used for be described on the cable
Electric-field sensor 3, the three-component magnetic field sensor 4, the three-component attitude transducer 8, the hydrophone 9 and described three
Component earthquake data sensor 10 provides the power supply needed for work.
Frequency electromagnetic field and three-component sea when in the present embodiment, in order to gather the ocean controllable source in marine site to be measured exactly
Foreign geological data, the electric dipole current source 2, the air gun source 6 and a plurality of cable can be connected to the tail of towing cable ship 1
End.Towing cable ship 1 can be run according to pre-set velocity, drag the electric dipole current source 2, air gun source 6 and cable in marine site to be measured
Middle synchronous operation.When it is implemented, can be that towing cable ship 1 is run according to pre-set velocity, while operation, electric dipole current source 2 be sent out
Controllable source time-frequency electromagnetic signal is penetrated, air gun source 6 launches earthquake source signal.The cable of same dragged operation can pass through line
The real-time acquisition and recording controllable source time-frequency electric field data of electric-field sensor 3 on cable, is gathered in real time by three-component magnetic field sensor 4
Three-component controllable source time-frequency magnetic field data is recorded, passes through the real-time acquisition and recording three-component ocean of three-component seismic data sensor 10
Geological data, by the real-time acquisition and recording seawater wave pressure force data of hydrophone 9, recorded in real time by three-component attitude transducer 8
Gather three-component attitude data.Wherein, the electric dipole current source 2 launches controllable source time-frequency electromagnetic signal and air gun source 6 is launched
Earthquake source signal will not interfere with each other.The mistake of frequency electromagnetic field during the ocean controllable source that collection controllable source time-frequency electromagnetic signal excites
The process of frequency electromagnetic field will not also interact during the ocean controllable source that journey and collection earthquake source signal excite.Therefore, pass through
Air gun source 6 launches earthquake source signal, and then three points excited by the electronic device collection earthquake source signal on cable
The process of marine seismic data is measured, and, controllable source time-frequency electromagnetic signal is launched by electric dipole current source 2, and then by cable
Electromagnetic device collection controllable source time-frequency electromagnetic signal excite ocean controllable source when frequency electromagnetic field process can carry out respectively,
It can also carry out simultaneously.When it is implemented, can as the case may be, flexibly only transmitting controllable source time-frequency electromagnetic signal is adopted for selection
Frequency electromagnetic field when collecting ocean controllable source, or only launch earthquake source signal collection three-dimensional component of marine seismic data, it is also or same
When launch controllable source time-frequency electromagnetic signal and earthquake source signal, gather three-dimensional component of marine seismic data and ocean controllable source time-frequency
Electromagnetic field.
In the present embodiment, the system provided by the application embodiment, which can gather, obtains ocean controllable source time-frequency
Electromagnetic data.Ocean controllable source time domain electromagnetic data can be collected, ocean controllable source domain electromagnetic number can also be gathered
According to ocean controllable source time domain electromagnetic data and ocean controllable source domain electromagnetic data can also be gathered simultaneously.It should be noted that
Existing method is typically only capable to individually collection and obtains time domain electromagnetic data or domain electromagnetic data, it is impossible to while gather time domain electromagnetic number
According to domain electromagnetic data.If in this way, generally required more after time domain electromagnetic data have been gathered, it is necessary to gather frequency domain data
Emission source corresponding to use, data acquisition equipment etc. are changed, to gather frequency domain data, cumbersome complexity, is wasted time and energy.And
The collection of time domain or domain electromagnetic data can be directly completed in present embodiment using same set of system.
In the present embodiment, the controllable source time-frequency electric field data can be specifically to include 1 durection component data
Controllable source time-frequency electric field data, that is, only include the controllable source time-frequency electric field data along cable direction.Can also include 2 sides
To the controllable source time-frequency electric field data of component data, that is, include along the reverse controllable source time-frequency electric field data of cable and vertical cables
Reverse controllable source time-frequency electric field data.When it is implemented, the component in 1 direction of collection according to specific needs, can be determined also
It is the component data in 2 directions as the controllable source time-frequency electric field data.
In the present embodiment, can will be same in order to collect the controllable source time-frequency electric field data along cable direction
Adjacent two electric-field sensor 3 on cable is as one group of controllable source time-frequency electric field data collection pair.Pass through this group of controllable source
Time-frequency electric field data is gathered to that can collect the controllable source time-frequency electric field data along cable direction.Wherein, on same cable
Adjacent two electric-field sensor 3 between spacing be 10 meters to 50 meters.So, it is ensured that adjacent two on same cable
There is sufficiently large pole span, so as to accurately measure the controllable source time-frequency electricity along cable direction between individual electric-field sensor
Field data.Similarly, can be by the electric field on cable in order to collect the controllable source time-frequency electric field data in vertical cables direction
Sensor 3, as one group of controllable source time-frequency electric field data collection pair, is gathered perpendicular to line with the electric-field sensor 5 on other cables
The controllable source time-frequency electric field data in cable direction.When it is implemented, a plurality of cable can be laid in alignment with parallel and head and the tail, in this way,
Relative two electric-field sensor 3 and 5 in adjacent cables can be used as one group of controllable source time-frequency electric field data collection pair, adopt
Collect the controllable source time-frequency electric field data in vertical cables direction.Fig. 1 can also be referred to, a plurality of cable is parallel and dislocation is laid.In this way,
Relative two electric-field sensor 3 and 5 on the adjacent cable in one cable both sides can be used as one group of controllable source time-frequency electric field
Data acquisition pair, the controllable source time-frequency electric field data in collection vertical cables direction.
In the present embodiment, used electric-field sensor all carries unpolarizable electrode.Wherein, two inductance sensors
One group of electrode pair can be formed by respective electrode, so as to gather the electricity of the controllable source time-frequency between two inductance sensors
Field data.When it is implemented, influenceed in order to avoid the polarity effect of electrode itself to controllable source time-frequency electric field faint in seawater
The measurement of data, electrode used in the electroded electric-field sensor are unpolarizable electrode.When it is implemented, it can pass through
Two unpolarizable electrodes can form a unpolarizable electrode pair, and then can measure to obtain two unpolarizable electrodes in seawater
Weak voltage signals between (electrode pair), and then gather and obtain corresponding controllable source time-frequency electric field data.Specifically, it is described
The electrode not polarized can be specifically copper sulfate electrode or nitric acid silver electrode, can also be the platinum electrode of gold,platinized
Deng.It is of course also possible to electrode used in other unpolarizable electrodes conducts is selected as the case may be.Also need to explanation
It is generally in individually collection frequency domain electric field data, often to become smaller, the situation of frequency band relative narrower for frequency.This
When the electric field data of collection is influenceed using ordinary electrode it is little.And when gathering time domain electric field data, mutually often for frequency
Rate changes greatly, and the relatively wide situation of frequency band, at this moment the electric field data of collection is had a great influence using ordinary electrode.In this reality
Apply in mode, accurate controllable source time-frequency electric field data is obtained in order to gather simultaneously, so using band not pole
The electric-field sensor of polarizing electrode rather than the electric-field sensor with ordinary electrode.
In the present embodiment, in order to collect the controllable source time-frequency electric field number in accurate vertical cables direction
According to when laying a plurality of cable, can be symmetrical by a plurality of cable and be arrangeding in parallel.For example, a plurality of cable is 9 cables
When, 1 cable can be laid on the symmetry axis, in the both sides that this is symmetrically taken out using the route that towing cable ship 1 travels as symmetry axis
Respectively symmetrically, 4 cables of laid equidistantly.And the spacing between adjacent cable is more than or equal to 25 meters.So, it is ensured that
There is sufficiently large pole span, so as to accurately measure sea between relative two electric-field sensor 3 and 5 in adjacent cables
Controllable source time-frequency electric field data in water.
In the present embodiment, the three-component controllable source time-frequency magnetic field data includes 3 durection component data, that is, wraps
Include：Along the magnetic-field component data of X-direction, the magnetic-field component data along Y direction and the magnetic-field component data along Z-direction.
Above-mentioned 3 component datas are obtained when it is implemented, can be gathered by three-component magnetic field sensor 4, that is, collect three-component
Controllable source time-frequency magnetic field data.
In the present embodiment, the three-dimensional component of marine seismic data include 3 durection component data, that is, include：Along X
The marine seismic data of direction of principal axis, the marine seismic data along Y direction and the marine seismic data along Z-direction.It is specific real
Shi Shi, it can be gathered by three-component seismic data sensor 10 and obtain above-mentioned 3 component datas, that is, collect three-component sea
Foreign geological data.
In the present embodiment, the seawater wave pressure force data is scalar data, only a data volume, for characterizing sea
The numerical values recited of ripples pressure.Seawater wave pressure force data is obtained when it is implemented, can be gathered by hydrophone 9.
In the present embodiment, in order to excite to obtain three-dimensional component of marine seismic data and seawater wave pressure force data, Ke Yili
Excited with air gun source in the following medium in marine site to be measured and seabed and produce ocean four component earthquake signal, wherein, the ocean
Four component earthquake signal can specifically include：Three-dimensional component of marine seismic data and seawater wave pressure force data.When it is implemented, also may be used
To be swashed as the case may be with construction requirement using one kind in dynamite source, induction focus, electromagnetism-mechanical focus
Hair produces three-dimensional component of marine seismic data and seawater wave pressure force data.
In the present embodiment, the three-component attitude data includes 3 durection component data, that is, includes：Measure inclination angle
Component data, azimuthal component data and tendency component data.Above-mentioned three-component attitude data can be changed by Coordinate Conversion
Into the position data of corresponding rectangular coordinate system, three-component when can be used for characterizing collection three-component controllable source time-frequency magnetic field data
The situation of magnetic field sensor 4.Above-mentioned 3 points are obtained when it is implemented, can be gathered by three-component attitude transducer 8
Measure data, that is, the three-component attitude data collected.Wherein, can be with during three-component attitude data subsequent treatment analysis
Frequency electromagnetic field and three-dimensional component of marine seismic data carry out rotation processing during for ocean controllable source.
In the present embodiment, in order to reduce shadow of the Acquisition Circuit of electric-field sensor 3 to three-component magnetic field sensor 4
Ring, when laying three-component magnetic field sensor 4, typically require three-component magnetic field sensor 4 and two adjacent electric-field sensors 3
Spacing will be more than or equal to 5 meters.So as to reduce interference of the electric-field sensor 3 to three-component magnetic field sensor 4.Specifically, may be used
So that three-component magnetic field sensor 4 to be laid in the interposition on the cable between two electric-field sensors adjacent on same cable
Put.
In the present embodiment, in order to ensure that controllable source time-frequency electromagnetic signal is sufficiently strong caused by electric dipole current source 2, to swash
Hair produces required controllable source time-frequency electric field data and three-component controllable source time-frequency magnetic field data.The electric dipole current source 2
Length can be set to 300 meters to 500 meters.Because the length long enough of electric dipole current source 2, during the controllable source launched in the seawater
Frequency electromagnetic signal can be just descended into the stratum below seabed.If the length of electric dipole current source 2 is too short, launch controllable source time-frequency
Electromagnetic signal will largely be distributed in seawater and (flow to negative pole from positive pole in seawater), seldom controllable source time-frequency electromagnetism
Signal can be just descended into the stratum below seabed, and then influences the collection of data and the measurement to marine site to be measured.
In the present embodiment, in order to above-mentioned three-component attitude transducer 8, three-component magnetic field sensor 4, electric field pass
Sensor 3, three-component seismic data sensor 10 and hydrophone 9 provide the power supply required for work, and one is additionally provided with outside the cable
The electric layer 11 of layer or multilayer, cable is produced into electric energy with the mechanical energy conversion of seawater movement, carried for above-mentioned electronic device
For operating voltage and operating current.When it is implemented, the electric layer 11 can be made up of friction nanometer generating flexible material.On
The mechanical energy that stating friction nanometer generating flexible material can swing with seawater by cable or pull in the seawater when moving ahead is converted into
Electric energy, as the energy, there is provided electron device.In addition, friction nanometer generating flexible material also has certain pliability, use
The material can be folded as the cable of electric layer, wound, and be easy to reclaim and reused.
In the present embodiment, it is used in order to gather accurate 3 component three-component controllable source time-frequency magnetic field data
Three-component magnetic field sensor 4 can be specifically coil type three-component magnetic field sensor or fluxgate type three-component magnetic field
Sensor.Wherein, the basic structure of the coil type three-component magnetic field sensor can be on the magnetic core of high magnetic permeability around with
The coil of certain number of turn.When coil being placed on controllable source in frequency electromagnetic field, magnetic field can change over time to be sensed in coil
Go out electromotive force.The fluxgate type three-component magnetic field sensor this using high conducting magnet core in tested magnetic field in alternating magnetic field
Under saturation activation, non-linear relation between its magnetic induction intensity and magnetic field intensity measures a kind of sensor of low-intensity magnetic field.When
So, can also require to select other kinds of three-component magnetic field sensor with performance to gather 3 components according to specific
Three-component controllable source time-frequency magnetic field data.On the other hand, the application is not construed as limiting.
In the present embodiment, in order to gather accurate 3 component earthquake data, used three-component seismic data passes
Sensor 10 can be specifically one kind in following electronic device：Three-component analog detector, three-component digital geophone, three-component
Accelerometer.Wherein, marine site to be measured can be measured by the three-component analog detector or the three-component digital geophone
Three-dimensional component of marine seismic data 3 component signals, can measure three points of marine site to be measured by the three-component accelerometer
Measure the acceleration signal of marine seismic data.When it is implemented, appointing in above-mentioned three kinds of devices can be used according to being actually needed
Meaning one kind is used as three-component seismic data sensor 10.
In the present embodiment, in order to by three-component attitude transducer 8, three-component magnetic field sensor 4, electric-field sensor 3,
Three-component attitude data that three-component seismic data sensor 10 and hydrophone 9 gather respectively, three-component controllable source time-frequency magnetic field
Each component data point in data, controllable source time-frequency electric field data, three-dimensional component of marine seismic data and seawater wave pressure force data
Do not recorded and stored, the cable can also specifically include multiple amplifiers and multiple analog-digital converters.When it is implemented,
By three-component attitude transducer 8 and amplifier, analog-digital converter connection exemplified by.Three points of the collection of three-component attitude transducer 8
Amount attitude data includes 3 data components.Therefore, when it is implemented, three-component attitude transducer 8 can connect 3 respectively puts
The input of big device, while the output end of above-mentioned 3 amplifiers connects an analog-digital converter respectively.In this way, three-component posture
Measurement inclination angle component data, azimuthal component data and the tendency component data that sensor 8 collects can be respectively by 1
After the enhanced processing of amplifier, then data signal is converted analog signals into by analog-digital converter respectively and is transmitted storage.Its
His electronic device is similar with three-component attitude transducer 8 with the connection of amplifier, analog-digital converter, and the application repeats no more.
In the present embodiment, in order to ensure the precision of the data of record storage, the analog-digital converter is specifically as follows
32 analog-digital converters.The numerical data resolution ratio being converted to using 32 analog-digital converters is relatively preferable, and accuracy is relative
It is higher.It is, of course, also possible to selection uses other analog-digital converters, such as 8 analog-digital converters, 16 moulds as the case may be
Number converter, 24 analog-digital converters etc..
In the present embodiment, in order to protect the flexible material of above-mentioned electric layer 11 not to be worn, while in order to prevent from sending out
Electric layer 11 causes short-circuit electric leakage due to impaired, and protective layer 12 is additionally provided with outside the electric layer 11.Wherein, the protective layer 12 1
As be made of wear-resisting nonmetallic materials.Specifically, above-mentioned protective layer 12 specifically can draw material to be made by Kev.Certainly,
When it is implemented, other wear-resisting nonmetallic materials can also be selected as the case may be as protective layer 12.On the other hand, the application
It is not construed as limiting.
In the present embodiment, in order to store electric energy caused by electric layer 11, the system can also include power storage
Device.Wherein, electrical energy storage device can specifically be connected with electric layer 11, and power storage caused by electric layer 11 is got up, with
It is standby to be supplied to electronic device to use.Include it should be noted that electric energy caused by electric layer 11 can be specifically supplied on cable
All electronic devices including sensor use.
In the present embodiment, the electrical energy storage device used can be specifically the electricity that can carry out multiple discharge and recharge
Can storage device.The electrical energy storage device that multiple discharge and recharge can be carried out is connected with the electric layer, specifically can be used for
Electric energy caused by the electric layer is repeatedly stored, and the electric energy sent in electric layer can not meet electromagnetism earthquake data acquisition cable
During normal work, can carry out the electrical energy storage device of multiple discharge and recharge can provide volume to electromagnetism earthquake data acquisition cable immediately
Outer electric energy, to ensure that electromagnetism earthquake data acquisition cable is normally carried out the collecting work of marine electromagnetic geological data.
The ocean controllable source time-frequency electromagnetic data and marine seismic acquisition system provided according to the embodiment of the present application
Operation principle can be：Electric dipole current source 2 produces excitaton source time-frequency electromagnetic signal, to excite generation controllable source in marine site to be measured
Time-frequency electric field data and three-component controllable source time-frequency magnetic field data；Air gun source 6 produces earthquake source signal, to be treated described
Survey marine site and excite generation three-dimensional component of marine seismic data and seawater wave pressure force data；Adjacent two being arranged on same cable
Electric-field sensor 3 can be used as a controllable source time-frequency electric field data collection pair, gather the controllable source time-frequency electricity along cable direction
Field data；The relative electric-field sensor 5 on electric-field sensor 3 and other cables on any one cable can be used as another
Individual controllable source time-frequency electric field data collection pair, the controllable source time-frequency electric field data in collection vertical cables direction；Three-component magnetic field passes
Sensor 4 gathers the three-component controllable source time-frequency magnetic field data；Hydrophone 9 gathers the seawater wave pressure force data；Three-component
Shake data pick-up 10 gathers the three-dimensional component of marine seismic data；Three-component attitude transducer 8 gathers three-component attitude data；
The mechanical energy swung in cable also seawater can be turned using electric layer 11 made of friction nanometer generating flexible material on cable
Change electric energy into, be the electric-field sensor 3, the three-component magnetic field sensor 4, the hydrophone 9, the 3-component earthquake
Data pick-up 10 and the grade of three-component attitude transducer 8 electronic device provide the power supply needed for work.Collect again
The three-component attitude data in above-mentioned marine site to be measured, controllable source time-frequency electric field data, controllable source time-frequency three-component magnetic field data, three points
, can be by constraining inverting or joint inversion, to the sea in marine site to be measured after measuring marine seismic data and seawater wave pressure force data
Geological structure, mineral resources, petroleum resources, methane hydrate below bottom etc. are predicted and evaluated.
In the embodiment of the present application, sent out by being set in the outer surface of cable made of friction nanometer generating flexible material
Electric layer, the mechanical energy that cable is swung is changed into electric energy, the electronic device on cable is powered, is avoided using high-power
Power supply causes electromagnetic interference to electronic device, and frequency electromagnetic field and marine seismic data adopts when solving existing ocean controllable source
High-power power supply trouble over long distances present in diversity method, frequency electromagnetic field and offshore earthquake number during the ocean controllable source collected
According to the low technical problem of poor accuracy, reliability, frequency electromagnetic field and sea when more accurately and efficiently gathering ocean controllable source are reached
The technique effect of foreign geological data.
In one embodiment, in order to meet explore needs：Simultaneously when gathering time domain ocean controllable source frequency electromagnetic field and
The frequency electromagnetic field during controllable source of frequency domain ocean.The controllable source time-frequency electromagnetic signal is specifically as follows the controllable source time-frequency electricity of time-domain
Magnetic signal, and/or, the controllable source time-frequency electromagnetic signal of frequency domain.When it is implemented, electric dipole current source 2 can be wanted according to specific
The controllable source time-frequency electromagnetic signal of the controllable source time-frequency electromagnetic signal in generation time domain and frequency domain when seeking common ground, and then can gather
Obtain frequency electromagnetic field during the ocean controllable source of frequency electromagnetic field and frequency domain during the ocean controllable source of time-domain.Certainly, dipole current
Source 2 can also be according to the controllable source time-frequency electromagnetic signal in specific requirement generation time domain or the controllable source time-frequency electricity of frequency domain
Magnetic signal.It is corresponding, can gather to time-domain ocean controllable source when frequency electromagnetic field or frequency domain ocean controllable source
When frequency electromagnetic field.
In one embodiment, in order to self-generating, operating voltage and work are provided to the electronic device on cable
Electric current, the electric layer can specifically be made up of friction nanometer generating flexible material.Wherein, the friction nanometer generating flexibility material
Mechanical energy when material can swing cable with seawater or towing moves ahead in the seawater is converted into electric energy, as the energy, there is provided give
Electronic device.In addition, friction nanometer generating flexible material also has certain pliability, the line of electric layer is used as using the material
Cable can be folded, wound, and be easy to reclaim and reused.
In one embodiment, it is enough in order to ensure to have between two electric-field sensors 3 adjacent on same cable
Big pole span, to cause adjacent two electric-field sensor 3 on same cable to be adopted as one group of controllable source time-frequency electric field data
Set pair can accurately gather the controllable source time-frequency electric field data along cable direction, above-mentioned two adjacent electric-field sensors 3
Between spacing specifically could be arranged to 10 meters to 50 meters.Similarly, in order to ensure relative two electric field on different cables
There is sufficiently large pole span between sensor 3 and 5, using cause relative two electric-field sensor 3 and 5 on different cables as
One group of controllable source time-frequency electric field data gathers the controllable source time-frequency electric field data to can accurately gather vertical cables direction,
Spacing between different cables can be set to be more than or equal to 25 meters.
In one embodiment, in order to avoid electric-field sensor 3 Acquisition Circuit to three-component magnetic field sensor 4
Interference, when specifically laying, the spacing between three-component magnetic field sensor 4 and electric-field sensor 3 on same cable is more than or equal to 5
Rice.
In one embodiment, in order that the three-component attitude data of the collection of forty amount attitude transducer 8 and three points
Measure marine seismic data, seawater wave pressure force data corresponding, can be by three-component attitude transducer 8, three-component when specifically laying
Shake data pick-up 10 and hydrophone 9 are close to be laid on cable and are used as an earthquake data acquisition group 7.So as to follow-up place
When managing data, three-component attitude data can be used to carry out rotation processing to three-dimensional component of marine seismic data.
In one embodiment,, can be by a plurality of cable when specifically laying in order to collect accurate data
Parallel laying.
In one embodiment, in order that the earthquake source signal relative symmetry that must launch, in the air gun source 6
In the case of for multiple air gun sources, the multiple air gun source 6 can be symmetrical arranged.
In one embodiment, in order to ensure that controllable source time-frequency electromagnetic signal is sufficiently strong caused by electric dipole current source, with
Excite the controllable source time-frequency electric field data and three-component controllable source time-frequency magnetic field data required for producing.The electric dipole current source
Length can be set to 300 meters to 500 meters.Because the length long enough of electric dipole current source, the controllable source time-frequency launched in the seawater
Electromagnetic signal can be just descended into the stratum below seabed.If the length of electric dipole current source is too short, transmitting controllable source time-frequency electricity
Magnetic signal will largely be distributed in seawater and (flow to negative pole from positive pole in seawater), seldom controllable source time-frequency electromagnetism letter
It number can just descend into the stratum below seabed, and then influence the collection of data and the measurement to marine site to be measured.
In one embodiment, in order to protect the flexible material of above-mentioned electric layer 11 not to be worn, while prevent from generating electricity
Layer 11 is additionally provided with protective layer 12 due to impaired short circuit electric leakage outside the electric layer 11.Wherein, the protective layer 12 is typically with resistance to
The nonmetallic materials of mill are made.Specifically, above-mentioned protective layer 12 can draw (English name, KEVLAR) material to be made by Kev.
Certainly, when it is implemented, other wear-resisting nonmetallic materials can also be selected as protective layer 12 as the case may be.On the other hand,
The application is not construed as limiting.
In one embodiment, in order to store electric energy produced by above-mentioned electric layer 11, the system can include electric energy
Storage device.Wherein, the electrical energy storage device can be electrically connected with electric layer 11, so as to will caused by electric layer 7 it is electric
It can be transmitted and stored at by the connection in electrical energy storage device.Wherein, described be electrically connected with can be specifically wireless connection,
It can be wired connection., can be by electric-field sensor 3, three-component magnetic field sensor 4, three during specific laying electrical energy storage device
The electronic devices such as component attitude transducer 8, three-component seismic data sensor 10 and hydrophone 9 are deposited with neighbouring electric energy respectively
Storage device is connected, and to obtain required electric energy nearby by the electrical energy storage device closed on, avoids apart from each other from other
Electrical energy storage device calls the energy, reduces loss of the electric energy in transport process.It is, of course, also possible to select as the case may be
The laying mode of other suitable electrical energy storage devices.On the other hand, the application is not construed as limiting.
In one embodiment, in order to store electric energy, the electrical energy storage device is specifically as follows rechargeable battery.Certainly
Other suitable devices can also be selected as electrical energy storage device.
Frequency electromagnetic field when in one embodiment, in order to collect the ocean controllable source in marine site to be measured, the system
Towing cable ship 1 can also specifically be included.Wherein, the towing cable ship 1 and the electric dipole current source 2, the air gun source 6 and described
Cable is connected.Moved together in this way, towing cable ship 1 can drag electric dipole current source 2, air gun source 6 and the cable.Dipole current
Controllable source time-frequency electromagnetic signal is launched in source 2 while being moved with towing cable ship 1, to produce controllable source time-frequency electricity in marine site to be measured
Field data and three-component controllable source time-frequency magnetic field data.Air gun source 6 launches earthquake source letter while being moved with towing cable ship 1
Number, to produce three-dimensional component of marine seismic data and seawater wave pressure force data in marine site to be measured.Cable is moving with towing cable ship 1
Meanwhile gather in real time and record corresponding controllable source time-frequency electric field data, three-component controllable source time-frequency magnetic field data, three-component appearance
State data, three-dimensional component of marine seismic data and seawater wave pressure force data.Wherein, the electric dipole current source 2 launches controllable source time-frequency
Electromagnetic signal and air gun source 6, which launch earthquake source signal, to be interfered with each other.Collection controllable source time-frequency electromagnetic signal excites
The process of frequency electromagnetic field during the ocean controllable source that the process of frequency electromagnetic field and collection earthquake source signal excite during the controllable source of ocean
Also will not interact.Therefore, earthquake source signal is launched by air gun source 6, and then adopted by the electronic device on cable
Collect the process of the three-dimensional component of marine seismic data of earthquake source signal excitation, and, controllable source time-frequency is launched by electric dipole current source 2
Electromagnetic signal, and then the ocean controllable source time-frequency electricity excited by the electromagnetic device collection controllable source time-frequency electromagnetic signal on cable
The process in magnetic field can be carried out respectively, can also be carried out simultaneously.When it is implemented, can as the case may be, flexibly selection
Frequency electromagnetic field when launching controllable source time-frequency electromagnetic signal acquisition ocean controllable source, or only launch earthquake source signal and gather three points
Marine seismic data is measured, launches also or simultaneously controllable source time-frequency electromagnetic signal and earthquake source signal, collection three-component ocean
Frequency electromagnetic field when geological data and ocean controllable source.
In the present embodiment, in order to gather accurate three-component controllable source time-frequency magnetic field data, used three points
It can be specifically coil type three-component magnetic field sensor or fluxgate type three-component magnetic field sensing to measure magnetic field sensor 4
Device.Wherein, the basic structure of the coil type three-component magnetic field sensor can be around with certain on the magnetic core of high magnetic permeability
The coil of the number of turn.When coil being placed on controllable source in frequency electromagnetic field, magnetic field can change over time and electricity is induced in coil
Kinetic potential.The fluxgate type three-component magnetic field sensor this be in the saturation of alternating magnetic field using high conducting magnet core in tested magnetic field
Under excitation, non-linear relation between its magnetic induction intensity and magnetic field intensity measures a kind of sensor of low-intensity magnetic field.Certainly,
It can require to select other kinds of three-component magnetic field sensor controllable to gather three-component with performance according to specific
Source time-frequency magnetic field data.On the other hand, the application is not construed as limiting.
In the present embodiment, in order to gather accurate three-component seismic data, used three-component seismic data
Sensor 10 can be specifically one kind in following electronic device：Three-component analog detector, three-component digital geophone, three points
Measure accelerometer.Wherein, sea to be measured can be measured by the three-component analog detector or the three-component digital geophone
3 component signals of the three-dimensional component of marine seismic data in domain, the three of marine site to be measured can be measured by the three-component accelerometer
The acceleration signal of component marine geological data.When it is implemented, can be according to being actually needed, using in above-mentioned three kinds of devices
Any one is as three-component seismic data sensor 10.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.
In addition, in this manual, adjective can be only used for an element or dynamic such as first and second
Make to make a distinction with another element or action, without requiring or implying any actual this relation or order.Permit in environment
Perhaps in the case of, be should not be interpreted as limited to reference to element or part or step (s) in only element, part or step one
It is individual, and can be one or more of element, part or step etc..
As can be seen from the above description, the application embodiment provide ocean controllable source time-frequency electromagnetic data and
Electric layer is made by friction nanometer generating flexible material by being set in the outer surface of cable in marine seismic acquisition system, will
The mechanical energy of cable changes into electric energy, and the electronic device on cable is voluntarily powered, and avoids large power supply to electronics
The electromagnetic interference of device, exist when solving existing ocean controllable source in the acquisition method of frequency electromagnetic field and marine seismic data
Power supply trouble, collect ocean controllable source when frequency electromagnetic field and the marine seismic data degree of accuracy technique effect；Lead to again
Cross the controllable source time-frequency as a kind of collection of collection group along cable direction by the use of adjacent two electric-field sensor of same cable
Electric field data, the electric-field sensor relative with other cables by the use of the electric-field sensor on cable are adopted as another collection group
Collect the controllable source time-frequency electric field data in vertical cables direction, reach the technology of the multicomponent controllable source time-frequency electric field data of collection
Effect；Again due to that need not power in addition, cable can be done longer, and then more more dense electricity can be laid on cable
Sub- device, frequency electromagnetic field and marine seismic data during gathering more detailed ocean controllable source, therefore also reached raising and adopted
Collect the technique effect of efficiency and data collection capacity；Also by by multiple electric-field sensors, three-component magnetic field sensor, three-component
Shake data pick-up, hydrophone and three-component attitude transducer are laid on cable, are reached while are gathered ocean controllable source time-frequency
The technique effect of electromagnetic field and three-dimensional component of marine seismic data.
Scene is embodied at one, ocean controllable source time-frequency electromagnetic data and ocean are provided using the application embodiment
System for acquiring seismic data designs passive towing line type ocean controllable source electromagnetism and system for acquiring seismic data, to the ocean in certain marine site
Frequency electromagnetic field is acquired during controllable source, can specifically be carried out in such a way.
Fig. 1 can be referred to.The system includes：Towing cable ship 1, pull-type electric dipole current source 2, pull-type air gun source 6, towing cable
Interior three-component attitude transducer 8, three-component magnetic field sensor 4, hydrophone 9 in towing cable, three-component seismic data sensing in towing cable
Electric layer 11 and wear-resisting nonmetallic materials are made made of device 10, the friction nanometer generating flexible material being wrapped in outside towing cable
Protective layer 12.Wherein, three-component attitude transducer 8, hydrophone 9 and three-component seismic data sensor 10 closely,
It is equal along the interval between the three-component attitude transducer 8 of cable distribution, edge equal along the interval between the hydrophone 9 of cable distribution
Interval between the three-component seismic data sensor 10 of cable distribution is equal.
Passive type marine electromagnetic and earthquake data acquisition towing cable are received using one or more layers friction that parcel is put outside towing cable
Meter Fa electricity flexible materials are as electric layer 11.When cable moves, the mechanical energy of cable can be converted into electric energy, caused electricity
Electronic device progress data collection task that can be in driving towing cable that can directly or indirectly, substitute completely length in former towing cable away from
From service cable.When towing cable tows movement or moved up and down in wave driving in the seawater, electric layer 11 can be by towing cable
Low-Frequency Mechanical motion is converted to electric energy, and the electronic device directly driven in towing cable carries out data collection task.Can also be by having
Line wirelessly then drives the electronic device in towing cable to carry out to the rechargeable battery charging in towing cable, rechargeable battery
Data collection task.
A three-component magnetic field sensor 4, two electric field sensings adjacent with cable are disposed between each two electric-field sensor 3
Device 3 forms an electrode pair, to measure the electric field component along cable directional spreding (along the controllable source time-frequency electric field in cable direction
Data).Electric-field sensor 3 and electric-field sensor 5 between adjacent electromagnetism and earthquake data acquisition towing cable can form another
Electrode pair, to measure the electric field component of vertical-rise cable directional spreding (the controllable source time-frequency electric field data in vertical cables direction).
Each three-component field Magnetic Sensor 4 can be used for measuring three-component magnetic field signal.Electric-field sensor 3 and three-component magnetic field sensor
One can be then disposed to be used as one by three-component attitude transducer 8, hydrophone 9, three-component seismic data sensor 10 between 4
Individual earthquake data acquisition group 7.Wherein, each three-component attitude transducer 8, each earthquake data acquisition group can be recorded in real time
Inclination angle, azimuth and tendency, being carried out for the three-dimensional component of marine seismic signal (three-dimensional component of marine seismic data) to record must
The rotation processing wanted.Real-time acquisition and recording seawater wave pressure is each distinguished by hydrophone 9 and three-component seismic data sensor 10
Data and three-dimensional component of marine seismic data.
In the system, three-component magnetic field sensor 4 is three-component line of induction ring type or three-component fluxgate type three-component magnetic
Field sensor.Three-component attitude transducer 8 is measurement inclination angle, azimuth, the three-component attitude transducer being inclined to.
You need to add is that the system disposes three-component magnetic field sensing between two electric-field sensors at a distance of tens of meters
Device, electric-field sensor and three-component magnetic field sensor are kept completely separate and come, the electric-field sensor of distant place and its data acquisition electricity
Road will not produce any interference and influence to three-component magnetic field sensor.When greatly increasing the three-component controllable source collected
The reliability of frequency magnetic field data.Spacing between every two parallel electromechanical cables is parallel with the left and right sides at least more than 25 meters
For the pole span of the electrode pair of electric-field sensor composition on electromechanical cable at least more than 50 meters, the electrode pair of so big pole span can be with
Reliably measure the electric field component in seawater.In addition, the pole span of this big pole span electrode pair also electrode with being disposed along cable direction
To pole span it is equal or suitable, it is ensured that the measured electric field component along cable direction and perpendicular to cable direction is relatively defined
Really, reliably.
By above-mentioned Sample Scenario, three-component controllable source time-frequency magnetic field, edge can be gathered simultaneously really by demonstrating the system
Cable direction and vertical cable direction controllable source time-frequency electric field component data, three-dimensional component of marine seismic data, seawater wave pressure force data.Again
Because passive type towing cable is powered one by one without the collecting unit to towing cable from deck, the electromagnetism and earthquake data acquisition of the system
Towing cable (cable) can be made longer than the active towing cable of routine, can there is the more dense and more electromagnetism of quantity on every towing cable
Device, frequency electromagnetic field and three-dimensional component of marine seismic data when so as to higher efficiency gathering high density ocean controllable source.Very
It extremely can with several times improve the marine geophysicses data acquisition amount that once construction collection obtains.Also can actually effectively improve
Detection accuracy, realize joint and integrated application ocean controllable source time-frequency electromagnetism and seismic exploration technique carry out Marine oil and gas resource and
The fine granularing scalability and overall merit of methane hydrate.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application have it is many deformation and
Change is without departing from spirit herein, it is desirable to which appended claim includes these deformations and changed without departing from the application.
Claims (12)
1. a kind of ocean controllable source time-frequency electromagnetic data and marine seismic acquisition system, it is characterised in that including：
Electric dipole current source, air gun source and a plurality of cable, wherein：
The electric dipole current source, for producing excitaton source time-frequency electromagnetic signal, the excitaton source time-frequency electromagnetic signal is used to treat
Survey in marine site and the following medium in seabed and excite frequency electromagnetic field when producing controllable source, wherein, frequency electromagnetic field includes during the controllable source
Controllable source time-frequency electric field data and three-component controllable source time-frequency magnetic field data；
The air gun source, for producing earthquake source signal, the earthquake source signal be used for marine site to be measured and seabed with
Generation marine seismic signals are excited in lower medium, wherein, the marine seismic signals include：Three-dimensional component of marine seismic data and sea
Ripples pressure data；
Multiple electric-field sensors with unpolarizable electrode are provided with every cable, wherein, it is adjacent on same cable
Two electric-field sensors be used for gather along cable direction controllable source time-frequency electric field data；
Three-component magnetic field sensor is provided with the cable between adjacent two electric-field sensor on the same cable, is used
In collection three-component controllable source time-frequency magnetic field data；
Cable between the three-component magnetic field sensor and the electric-field sensor is provided with earthquake data acquisition group, wherein,
The earthquake data acquisition group includes：Three-component attitude transducer, for gathering three-component attitude data；Three-component seismic data
Sensor, for gathering the three-dimensional component of marine seismic data；Hydrophone, for gathering the seawater wave pressure force data；
Electric layer is provided with every cable, wherein, the electric layer is used for for the electric field sensing on the cable
Device, the three-component magnetic field sensor, the three-component attitude transducer, the hydrophone and the three-component seismic data pass
Sensor provides the power supply needed for work.
2. system according to claim 1, it is characterised in that the electric layer is by friction nanometer generating flexible material system
Into.
3. system according to claim 2, it is characterised in that between adjacent two electric-field sensor on same cable
Spacing be 10 meters to 50 meters；The spacing between three-component magnetic field sensor and electric-field sensor on same cable is more than or equal to
5 meters.
4. system according to claim 3, it is characterised in that a plurality of cable is symmetrical and be arranged in parallel, wherein, it is adjacent
Two lines cable between spacing be more than or equal to 25 meters.
5. system according to claim 2, it is characterised in that in the situation that the air gun source is multiple air gun sources
Under, the multiple air gun source is symmetrical arranged.
6. system according to claim 2, it is characterised in that the length of the electric dipole current source is 300 meters to 500 meters.
7. system according to claim 2, it is characterised in that the electric layer peripheral hardware matcoveredn, wherein, the protection
Layer draws material to be made by Kev.
8. system according to claim 2, it is characterised in that the system also includes towing cable ship, wherein, the cable,
The tail end of the air gun source, the electric dipole current source respectively with the towing cable ship is connected.
9. system according to claim 2, it is characterised in that the system also includes electrical energy storage device, the electric energy
Storage device is connected with the electric layer, for storing electric energy caused by the electric layer.
10. system according to claim 2, it is characterised in that the three-component seismic data sensor is included below extremely
It is one of few：
Three-component analog detector, three-component digital geophone, three-component accelerometer.
11. system according to claim 2, it is characterised in that the three-component magnetic field sensor is coil type three-component
Magnetic field sensor, or, fluxgate type three-component magnetic field sensor.
12. system according to claim 2, it is characterised in that on the electric-field sensor and other cables on the cable
The electric-field sensor of relative position, for gathering the controllable source time-frequency electric field data in vertical cables direction.
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