CN105242316A - In situ system for measuring sound wave transmission velocity for survey of seabed geology - Google Patents
In situ system for measuring sound wave transmission velocity for survey of seabed geology Download PDFInfo
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- CN105242316A CN105242316A CN201510379296.7A CN201510379296A CN105242316A CN 105242316 A CN105242316 A CN 105242316A CN 201510379296 A CN201510379296 A CN 201510379296A CN 105242316 A CN105242316 A CN 105242316A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/102—Number of transducers one emitter, one receiver
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- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
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Abstract
The present invention relates to an in-situ system for measuring a sound wave transmission velocity for surveying seabed geology. To apprehend the characteristics of marine sediments, the in-situ system comprises: a sound wave signal measurement device placed on the seabed for directly measuring sound wave signals regarding the seabed and additional information; and a sound wave transmission velocity calculation device capable of calculating the sound wave transmission velocity by utilizing the sound wave signal and additional information measured by the sound wave signal measurement device. Thereby, the in-situ system for measuring a sound wave transmission velocity for surveying seabed geology is capable of preventing errors caused by differences in temperatures and pressures during the measurement of the sound wave transmission velocity in a laboratory environment, to the fullest degree.
Description
Technical field
The present invention relates at the scene for measuring the acoustic wave propagation velocity Analytical system of submarine geology acoustic wave propagation velocity, more specifically, the present invention relates to, in order to confirm the physical property of marine accumulation thing, be configured in on-the-spot sea bottom surface, by directly measuring for the acoustic signals of submarine geology and the acoustic signals determinator of additional information at the scene, with by submarine geology investigation acoustic scene velocity of wave propagation Analytical system that the acoustic signals that measures and the additional information acoustic wave propagation velocity calculation element that correctly can calculate acoustic wave propagation velocity are formed.
Background technology
Usually, gather marine accumulation thing, then analyzed, confirm the physical property of marine accumulation thing thus, these contents are utilized as the basic data of geologize resource, be a very important link in geological resource research.
But in order to confirm the physical property of this marine accumulation thing, the necessary problem in the face of all difficulties of analysis of deposit is carried out in the direct seabed to corresponding marine site.
Therefore, in order to address this is that, existing, usually mostly use the Sample transportation gathering marine accumulation thing behind laboratory, marine accumulation thing sample is measured and analyzes the method for respective regions deposit characteristic.
At this, gather when being positioned at the accumulation horizon sample in seabed, be not only the collection of sample, and the sample of collection is transported to laboratory with state originally as far as possible is also very important.
And, for the analytical approach of the marine accumulation thing sample gathered, recently owing to actively carrying out the sensing equipment studying and develop sound wave, mostly utilize this stereo set in the method acoustically measuring and analyze marine accumulation thing physical property.
The acoustic wave propagation velocity of marine accumulation thing can be used in explain or analyze be positioned at seabed accumulation horizon thickness, with diagenetic correlativity or other physical property etc.
Especially, velocity structure schematically can be calculated by elastic wave analysis at this, but often produce very large error with the measured value of reality, therefore in order to correctly analyze the characteristic of marine accumulation thing, correctly measuring acoustic wave propagation velocity is vital factor.
As mentioned above, about the Sound wave measurement of marine accumulation thing, in the announcement of No. 10-1248829th, registered patent, from the sample of the core sample collection part that probing marine accumulation thing obtains, for making the acoustic wave propagation velocity from the Specimen Determination level gathered and vertical direction, multiple sample sample is gathered from the sampling box in each formation hole, face and the desired location of core sample, to perform the sampling of each degree of depth, and the sample sample of collection is placed in determinator, technology that is vertical and horizontal direction sound wave can be measured.
But acoustic wave propagation velocity is very large by the impact of temperature, pressure.Especially, in order to measure correct acoustic wave propagation velocity at unconsolidated marine accumulation thing, need to keep on-the-spot pressure.
, in existing technology, stressed constituent element can be executed because do not comprise to unconsolidated marine accumulation thing sample, so have the problem producing error when measuring acoustic wave propagation velocity.
In addition, in the announcement of No. 10-0642304th, registered patent, according to load pressure, change the pressure around sample by the instrument for measuring of physical property of non-consolidation sample, the technology of physical property measurement can be carried out non-consolidation sample.
But, in prior art as above, because after gathering sample from marine accumulation thing, acoustic wave propagation velocity is measured after being transported to laboratory again, such as, because measure acoustic wave propagation velocity under the state that pressure and temperature etc. are different from the condition at scene, have and actual field, the speed namely in submarine geology produces the problem of difference.
Summary of the invention
The technical problem to be addressed by invention
The present invention proposes to solve problem as above, its objective is and provide, when measuring acoustic wave propagation velocity, in order to prevent by temperature and the issuable error of pressure differential, be configured in sea bottom surface, under the state that pressure and temperature are kept in actual field to marine accumulation thing, correctly can measure the submarine geology investigation acoustic scene velocity of wave propagation Analytical system of acoustic wave propagation velocity.
And, the object of this invention is to provide, acoustic wave propagation velocity determinator possesses determination of tilt sensor, to measure the inclination that determinator and sea bottom surface are formed, reflect degree of tilt when measuring acoustic wave propagation velocity, correctly can measure the submarine geology investigation acoustic scene velocity of wave propagation Analytical system of acoustic wave propagation velocity thus.
But object of the present invention is not limited to described object, and other object still NM will become very clear and definite from following record to those skilled in the art.
Solve the technical scheme of problem
In order to complete described object, submarine geology investigation acoustic scene velocity of wave propagation Analytical system according to the embodiment of the present invention is, by the acoustic signals determinator measuring the acoustic signals propagated by submarine geology, the acoustic wave propagation velocity calculation element calculating submarine geology acoustic wave propagation velocity with the information transmitted from described acoustic signals determinator formed, described acoustic signals determinator, it is characterized in that, comprise: weight portion, there is certain weight; Steel pipe, its one end is connected to the center, downside in described weight portion, and is formed with hollow in inside; Deposit cutting knife, one end is arranged on the other end of described steel pipe, forms hollow in inside, and is configured in submarine geology for making described steel pipe insert, and the end face of the other end is then formed with blade form; Sound wave sending part, the upside being configured in described weight portion produces acoustic signals, so that the submarine geology propagation of being inserted by described steel pipe; Acoustic receiver portion, is configured in a side of described steel pipe, receives the acoustic signals propagated by described submarine geology; Slope determination part, measures and is inserted in the described steel pipe of submarine geology and the slope of sea bottom surface, and produce slope information; Temperature measuring portion, is configured in a side of described steel pipe, measures the submarine geology temperature that described steel pipe inserts, and produces temperature information; And information sending part, send described acoustic signals, slope information and temperature information to described acoustic wave propagation velocity calculation element.
And according to acoustic wave propagation velocity Analytical system of the present invention, it is characterized in that, described acoustic wave propagation velocity calculation element comprises: receives information portion, receive acoustic signals, slope information and temperature information that described information sending part transmits; Acoustic wave propagation velocity calculating part, calculates the acoustic wave propagation velocity of described submarine geology from the acoustic signals accepted; And acoustic wave propagation velocity correction unit, according to described slope information and temperature information, the acoustic wave propagation velocity calculated is corrected.
And according to acoustic wave propagation velocity Analytical system of the present invention, it is characterized in that, described acoustic receiver portion is multiple along the length direction configuration separated by a certain interval of described steel pipe.
And according to acoustic wave propagation velocity Analytical system of the present invention, it is characterized in that, acoustic signals determinator is configured in the upside in described weight portion, and comprise the information storage portion storing described acoustic signals, slope information and temperature information in real time.
And, according to acoustic wave propagation velocity Analytical system of the present invention, it is characterized in that, also comprise: sample collection pipe, be arranged on the inside of described steel pipe, and forming hollow in inside to insert marine accumulation thing sample, this sample collection pipe alongst forms cutting line respectively in a side and relative another side.
And, according to acoustic wave propagation velocity Analytical system of the present invention, it is characterized in that, comprise: position finding portion, be arranged on described acoustic signals determinator, and utilize the positional information of acoustic signals determinator described in GPS (GlobalPositioningSystem) signal measuring; And piezometry portion, measure the pressure of described submarine geology, the positional information measured by described position finding portion and piezometry portion and pressure information are stored in described information storage portion.
, according to acoustic wave propagation velocity Analytical system of the present invention, it is characterized in that, described acoustic signals determinator and acoustic wave propagation velocity calculation element provide information by wired or wireless communication meanwhile.
Beneficial effect
According to submarine geology investigation acoustic scene velocity of wave propagation Analytical system of the present invention, in order to calculate marine accumulation thing, the i.e. acoustic wave propagation velocity of submarine geology, acoustic wave propagation velocity determinator is configured in sea bottom surface, under the state keeping the ambient conditions such as the pressure of actual field and temperature, after measuring acoustic wave propagation velocity and additional information, acoustic wave propagation velocity and additional information is utilized by acoustic wave propagation velocity calculation element, calculate the correct acoustic wave propagation velocity according to measuring environment, there is the advantage that may be caused mistake when can prevent from measuring acoustic wave propagation velocity in laboratory on the ground by temperature and pressure differential thus.
And, according to the present invention, acoustic wave propagation velocity determinator possesses determination of tilt sensor, measure the inclination of determinator and sea bottom surface formation, the slope information that reflection measures when analyzing acoustic wave propagation velocity, has the advantage that correctly can measure acoustic wave propagation velocity at the scene to submarine geology thus.
Accompanying drawing explanation
Fig. 1 is according to embodiments of the invention, the schematic pie graph of the submarine geology investigation acoustic scene velocity of wave propagation Analytical system formed by acoustic signals determinator and acoustic wave propagation velocity calculation element.
Fig. 2 is the schematic formation calcspar according to acoustic signals determinator of the present invention.
Fig. 3 is the schematic formation calcspar according to acoustic wave propagation velocity calculation element of the present invention.
Fig. 4 and Fig. 5 is the exemplar state figure that acoustic signals determinator according to the present invention is configured in sea bottom surface.
Fig. 6 is the schematic oblique view according to acoustic signals determinator of the present invention possessing sample collection pipe.
Embodiment
Below, by reference to the accompanying drawings preferred embodiment of the present invention is described in detail.In following the present invention illustrates, related known function or formation illustrate may to main idea of the present invention produce unnecessary obscure time, omit its detailed description.
Embodiment according to concept of the present invention can implement numerous variations, and can have variform, therefore illustrates specific embodiment at drawing, will be described in detail in this manual.But this is not specifically disclose form by being limited to according to the embodiment of concept of the present invention, but is construed as all changes comprised in thought of the present invention and technical scope, equipollent or substitute.
Mention certain assembly " connection " or " contact " when other assembly, can directly connect or be in relation to this other assembly, but should be appreciated that may also there is other assembly in centre.On the other hand, mention that certain assembly " directly connection " or " contacting directly " are when other assembly, are construed as and can not there is other assembly in centre.Between illustrated components relativeness performance in, namely " ~ between " and " directly ~ between " or " ~ adjacent " and " ~ direct neighbor " etc. also should be same explanation.
The term used in the description, just in order to illustrate that specific embodiment uses, is not have a mind to limit the present invention.Single numerical representation, when context is not particularly illustrated, comprises multiple numerical representation.In this manual, " comprise " or the term of " having " etc. be used to specify implement feature, numeral, step, action, assembly, parts or these combinations existence, should be appreciated that this is not getting rid of other features one or more in advance, or numeral, step, action, assembly, parts or these existence of combining or additional possibility.
Fig. 1 is according to embodiments of the invention, the schematic pie graph of the submarine geology investigation acoustic scene velocity of wave propagation Analytical system formed by acoustic signals determinator and acoustic wave propagation velocity calculation element, Fig. 2 and Fig. 3 is the schematic formation calcspar according to acoustic signals determinator of the present invention and acoustic wave propagation velocity calculation element respectively, Fig. 4 and Fig. 5 is the exemplar state figure that acoustic signals determinator is configured in sea bottom surface.
With reference to drawing, by the acoustic signals determinator 100 measuring the acoustic signals propagated by submarine geology 2, and can form from the acoustic wave propagation velocity calculation element 200 of information calculating submarine geology 2 acoustic wave propagation velocity of this acoustic signals determinator transmission according to submarine geology investigation acoustic scene velocity of wave propagation Analytical system 10 of the present invention.
As shown in Figures 1 and 2, acoustic signals determinator 100 can comprise: weight portion 110, steel pipe 120, deposit cutting knife 130, sound wave sending part 140, acoustic receiver portion 141, slope determination part 150, temperature measuring portion 151, information sending part 160, information storage portion 170, piezometry portion 180 and position finding portion 181.
Weight portion 110 is the hammers etc. with constant weight, and such as, as shown in Figures 4 and 5, its formation can make acoustic signals determinator 100 move to sea bottom surface 3 insertion from the water surface 1 and be configured in submarine geology.
The steel pipe 120 being arranged on center on the downside of weight portion 110 can be formed by iron and steel (steel) material, and has certain length (such as, about 3.5m), is the tubulose forming hollow in inside.
And can insert in steel pipe 120 will sample collection pipe 121 described later, is formed with double-sleeve structure.
One end is connected to the other end of the steel pipe 120 in weight portion 110, can install one end of deposit cutting knife 130 to length direction in its lower end.Deposit cutting knife 130 forms hollow therein for making, and open its one end (upper end) and the other end (lower end), especially, the other end end face of deposit cutting knife 130 is formed better with blade form 131.
Therefore, it is characterized in that, steel pipe 120 easily can be inserted by deposit cutting knife 130 and be configured in submarine geology 2.
Sound wave sending part 140 is configured in the upside in weight portion 110, under the state that steel pipe 120 is inserted in submarine geology 2, such as, for making, by submarine geology 2 conduct acoustic waves signal, can to produce broadband (broadband) acoustic signals.
Acoustic receiver portion 141 is configured in a side of steel pipe 120, and its formation can receive the acoustic signals propagated by submarine geology 2 from sound wave sending part 140.
Concrete, acoustic receiver portion 141 is as shown in drawing, and the configuration separated by a certain interval of the length direction along steel pipe 120 escapes, and can receive acoustic signals in each acoustic receiver portion 141 according to steel pipe 120 degree of depth being configured in submarine geology 2.
And acoustic signals determinator 100 according to the present invention, when measuring the acoustic signals of submarine geology 2, can comprise the formation that can measure state or environmental information.Concrete, acoustic signals determinator 100 from the water surface 1 reach sea bottom surface 3 insert submarine geology 2 time, as shown in Figures 4 and 5, vertically can insert configuration or configure with the state of inclination certain angle (θ).
Now, slope determination part 150 can measure and is inserted in the steel pipe 120 of submarine geology 2 and the slope of sea bottom surface 3 and produces slope information.
Temperature measuring portion 151 can measure the temperature of the submarine geology 2 that steel pipe 120 inserts and produce temperature information.This temperature measuring portion 151 can be configured in a side of steel pipe 120, and can configure multiple as required.
And piezometry portion 180 can measure pressure acoustic signals being carried out to the submarine geology measured.Usually because acoustic wave propagation velocity also changes, so can provide by other experiment the effect pressure of mensuration and acoustic wave propagation velocity being compared judgement afterwards along with pressure change.
GPS (GlobalPositioningSystem) signal that position finding portion 181 utilizes individual satellites (not shown) to provide can measure the positional information of acoustic signals determinator.
Information storage portion 170 is configured in the upside in weight portion 110, acoustic signals and the environmental information of acoustic receiver portion 141 reception can be stored in real time, such as slope information, temperature information, pressure information and positional information etc., can transmit acoustic signals, slope information, temperature information etc. at information sending part 160 to acoustic wave propagation velocity calculation element 200.
As shown in Figure 3, acoustic wave propagation velocity calculation element 200 can comprise: receives information portion 210, acoustic wave propagation velocity calculating part 220 and acoustic wave propagation velocity correction unit 230.
Receives information portion 210 and information sending part 160 perform wired or wireless communication and receive acoustic signals, slope information and temperature information etc., can calculate the acoustic wave propagation velocity of submarine geology at acoustic wave propagation velocity calculating part 220 from the acoustic signals received.
And acoustic wave propagation velocity correction unit 230 can correct the acoustic wave propagation velocity calculated according to the slope information received and temperature information.Especially, as shown in Figure 5, when acoustic signals determinator 100 is configured in sea bottom surface 3 with the state tilted, there is the shortcoming that correctly can not measure acoustic wave propagation velocity.
Therefore, in acoustic wave propagation velocity correction unit 230, according to the slope information measured by slope determination part 150, correct acoustic wave propagation velocity, correctly can calculate the acoustic wave propagation velocity of submarine geology thus.
Fig. 6 is the schematic oblique view according to acoustic signals determinator of the present invention possessing sample collection pipe.
Acoustic signals determinator 100 according to the present invention can be configured in inside in steel pipe 120 inside and be formed with the sample collection pipe 121 of hollow to obtain marine accumulation thing.
Especially, sample collection pipe 121, is characterized in that, as shown in drawing, alongst can form cutting line 122,122 respectively in a side and relative another side.By the cut-out that this cutting line 122,122 more easily carries out in the longitudinal direction, the analysis of composition transitivity can be carried out to the marine accumulation thing gathered.
And, when Physical Property Analysis is carried out to marine accumulation thing, with reference to the additional information measured by acoustic signals determinator 100, such as, temperature information, pressure information, slope information and positional information etc., can carry out more accurate Physical Property Analysis to marine accumulation thing thus.
And preferably, sample collection pipe 121 is formed, to prevent the moisture contained by marine accumulation thing or other compositions from corroding with corrosion stability material.
As mentioned above, content of the present invention is illustrated with reference to the embodiment shown on drawing, but this just illustrates, and every technician with usual knowledge should be appreciated that other embodiment can implementing various deformation and equalization thus in the art.Therefore, the technical protection scope that the present invention is real define according to the technological thought of described claims.
The explanation > of < main graphical mark
10: acoustic wave propagation velocity Analytical system
100: acoustic signals determinator 110: weight portion
120: steel pipe 121: sample collection pipe
130: deposit cutting knife 140: sound wave sending part
141: acoustic receiver portion 150: slope determination part
151: temperature measuring portion 160: information sending part
170: information storage portion 180: piezometry portion
181: position finding portion
200: acoustic wave propagation velocity calculation element 210: receives information portion
220: acoustic wave propagation velocity calculating part 230: acoustic wave propagation velocity correction unit.
Claims (10)
1. a submarine geology investigation acoustic scene velocity of wave propagation Analytical system, by the acoustic signals determinator measuring the acoustic signals propagated by submarine geology, the acoustic wave propagation velocity calculation element calculating submarine geology acoustic wave propagation velocity with the information transmitted from described acoustic signals determinator formed, it is characterized in that
Described acoustic signals determinator, comprises:
Weight portion, has certain weight;
Steel pipe, its one end is connected to the center, downside in described weight portion, and is formed with hollow in inside;
Deposit cutting knife, one end is arranged on the other end of described steel pipe, forms hollow in inside, and is configured in submarine geology for making described steel pipe insert, and the end face of the other end is then formed with blade form;
Sound wave sending part, the upside being configured in described weight portion produces acoustic signals, so that the submarine geology propagation of being inserted by described steel pipe;
Acoustic receiver portion, is configured in a side of described steel pipe, receives the acoustic signals propagated by described submarine geology;
Slope determination part, measures and is inserted in the described steel pipe of submarine geology and the slope of sea bottom surface, and produce slope information;
Temperature measuring portion, is configured in a side of described steel pipe, measures the submarine geology temperature that described steel pipe inserts, and produces temperature information; And
Information sending part, sends described acoustic signals, slope information and temperature information to described acoustic wave propagation velocity calculation element.
2. acoustic scene velocity of wave propagation Analytical system according to claim 1, is characterized in that,
Described acoustic wave propagation velocity calculation element, comprises:
Receives information portion, receives acoustic signals, slope information and temperature information that described information sending part transmits;
Acoustic wave propagation velocity calculating part, calculates the acoustic wave propagation velocity of described submarine geology from the acoustic signals accepted; And
Acoustic wave propagation velocity correction unit, according to described slope information and temperature information, corrects the acoustic wave propagation velocity calculated.
3. acoustic scene velocity of wave propagation Analytical system according to claim 1, is characterized in that,
Described acoustic receiver portion is multiple along the length direction configuration separated by a certain interval of described steel pipe.
4. acoustic scene velocity of wave propagation Analytical system according to claim 1, is characterized in that,
Be configured in the upside in described weight portion, and comprise the information storage portion storing described acoustic signals, slope information and temperature information in real time.
5. acoustic scene velocity of wave propagation Analytical system according to claim 1, is characterized in that, also comprise:
Sample collection pipe, is arranged on the inside of described steel pipe, and forms hollow in inside to insert marine accumulation thing sample.
6. acoustic scene velocity of wave propagation Analytical system according to claim 5, is characterized in that,
Described sample collection pipe alongst forms cutting line respectively in a side and relative another side.
7. acoustic scene velocity of wave propagation Analytical system according to claim 1, is characterized in that,
The sound wave that described sound wave sending part produces is broadband (broadband) sound wave.
8. acoustic scene velocity of wave propagation Analytical system according to claim 4, is characterized in that, comprise:
Position finding portion, is arranged on described acoustic signals determinator, and utilizes the positional information of acoustic signals determinator described in GPS (GlobalPositioningSystem) signal measuring,
The cached location information measured by described position finding portion is in described information storage portion.
9. acoustic scene velocity of wave propagation Analytical system according to claim 1, is characterized in that,
The information sending acoustic wave propagation velocity calculation element to from described acoustic signals determinator is provided by wired or wireless communication.
10. acoustic scene velocity of wave propagation Analytical system according to claim 4, is characterized in that, described acoustic signals determinator comprises:
Piezometry portion, measures the pressure of described submarine geology,
The pressure information measured by described piezometry portion is stored in described information storage portion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020140082943A KR101435617B1 (en) | 2014-07-03 | 2014-07-03 | In situ system for measuring sound wave transmission velocity for survey of seabed geology |
KR10-2014-0082943 | 2014-07-03 |
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CN105242316A true CN105242316A (en) | 2016-01-13 |
CN105242316B CN105242316B (en) | 2017-12-15 |
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CN201510379296.7A Expired - Fee Related CN105242316B (en) | 2014-07-03 | 2015-07-01 | The live acoustic wave propagation velocity measurement system of seabottom geology investigation |
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CN (1) | CN105242316B (en) |
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CN105784408A (en) * | 2016-04-05 | 2016-07-20 | 广东工业大学 | Submarine sediment in-situ layering acoustic measurement synchronous sampler |
CN105891325A (en) * | 2016-04-05 | 2016-08-24 | 广东工业大学 | Synchronous sampling pipe with multi-section connection and bottom sediment sampling apparatus with synchronous sampling pipe |
CN107560883A (en) * | 2016-07-01 | 2018-01-09 | 广东技术师范学院 | Multifunctional gravity formula marine sediment sampler |
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KR102069436B1 (en) * | 2018-05-17 | 2020-02-11 | 한국지질자원연구원 | A Detector Of Sound Waves For Gas Hydrate Deposits |
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CN105891325B (en) * | 2016-04-05 | 2019-01-29 | 广东工业大学 | A kind of bottom sediment sampler of the synchronized sampling pipe with multistage connection |
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