JP4905757B2 - Seawater collection device - Google Patents

Description

  The present invention relates to a seawater collecting apparatus that moves to a site where the situation changes in order to grasp the state of change in seawater and collects seawater at a predetermined site.

  Substances such as products (emissions) in the subsurface biosphere on the sea floor are released as hot water into the ocean floor and diffuse into the ocean deep as a hydrothermal plume. Observing the behavior of this diffusion is useful because it will elucidate the physical and chemical reactions and microbial activities that occur in it and the effects they have on the ocean. Elucidation of carbon dioxide dilution and the distribution of marine organisms not only in hydrothermal plumes, but also in the ocean release of carbon dioxide This is useful for grasping the chemical environment changes of emissions and living organisms.

It is considered to detect the distribution of seawater conditions by detecting the condition of seawater including hot water plume using a pH sensor or a device that measures the vertical distribution of seawater density (CTD: conductivity-temperature-depth recorder). It is done. However, since the derivation of the distribution is based on the indirect grasp of the seawater, it is difficult to accurately identify the detection position, and it is impossible to accurately grasp the distribution.

  In order to accurately grasp the distribution of seawater including hot water plumes, it is considered to collect seawater directly. Specifically, using a working machine that performs work in the sea (for example, see Patent Document 1), seawater at a site where the temperature change has occurred by remote control is collected, and matching with the information on the collected position is performed. It is considered to grasp the distribution of seawater. In this case, seawater can be collected by moving to the vicinity of the portion where the temperature change is caused by the work implement.

  However, in remote operation by a work machine, seawater is collected by manipulator operation from the work machine, so it takes time from the start to the end of collection, for example, when it detects that the temperature has changed Even when the work was started, it was difficult to collect in real time, and it was impossible to collect seawater at a desired site.

  The distribution of seawater including a hot water plume changes significantly even if the temperature and other conditions change slightly. For this reason, the collection of seawater in real time is indispensable for grasping the situation distribution of seawater.

JP-A-8-180393

The present invention has been made in view of the above situation, and an object of the present invention is to provide a seawater collection device that moves to a site where the situation changes in order to grasp the state of change in seawater and collects seawater at a predetermined site. To do.

In the present invention, while detecting the condition of sea water by moving the boundary conditions were taken seawater boundary, we derive the distribution situation.

Thereby, since it moves to the site | part to which the condition of seawater changes and the seawater of a predetermined | prescribed site | part is sampled, it becomes possible to grasp | ascertain the condition of the change of seawater by combining with the information of a sampling position.

Also, the status of seawater is the temperature of the hot water to be ejected from the seabed, the hot water boundary was recovered by moving the border portion of the temperature change, we derive the distribution of hot water in combination with the collected positional information .

Thereby, it becomes possible to grasp | ascertain distribution of hot water.

In order to achieve the above object, the seawater collection device of the present invention according to claim 1 includes a sensor for detecting the state of seawater, and also includes a seawater collection unit for collecting seawater in the vicinity of the sensor. configure, submarine provided with a submersible to move the collection means to an arbitrary position by moving the seawater collecting means includes a plurality of cylindrical body position both ends are identified are open to the sensor, the cylindrical body The cylinder is arranged in a state in which the axial center extends in the moving direction so that seawater can be circulated with the lid open, and the lid is closed from the outside of the cylinder. An urging means for urging to the side is provided, and an opening / closing means for individually restricting the lid to the opening side against the urging means and individually releasing the restriction when collecting seawater is provided .

In the present invention according to claim 1, by collecting the seawater at the place by the seawater collecting means located in the vicinity when the sampling means is moved to an arbitrary position by the submersible and a predetermined state of the seawater is detected by the sensor. In order to grasp the state of seawater change, it is possible to move to a part where the situation changes and collect seawater at a predetermined part.
And the seawater in the cylinder is replaced with the movement, the lid is instantly closed by the urging force of the urging means by individually releasing the regulation by the opening and closing means, and the seawater at a predetermined part can be collected instantly it can.

And the seawater collection device of the present invention according to claim 2 is characterized in that, in the seawater collection device according to claim 1, a plurality of cylindrical bodies are provided with a plurality of positions specified with respect to the sensor. To do.

In the present invention according to claim 2, seawater in a state specified at a plurality of positions at predetermined intervals can be collected.

Moreover, the seawater collection device of the present invention according to claim 3 is the seawater collection device according to claim 1 or 2, wherein the sensors are a temperature sensor and a turbidity sensor, and the collected seawater is heat that is ejected from the seabed. It is water .

In this invention which concerns on Claim 3 , the temperature condition of seawater can be detected with a temperature sensor and a turbidity sensor, and hot water in a predetermined | prescribed site | part can be extract | collected.

Seawater sampling device of the present gun invention, it is possible to collect seawater predetermined site by moving the site conditions change in order to grasp the situation of change of sea water.

Seawater status monitoring method according to the onset bright seawater sampling device is moved temperatures the situation of seawater, the position of the hot water ejected from hydrothermal vents while detecting the turbidity or the like (boundary conditions), Hot water (seawater at the boundary) at a predetermined temperature site is collected and matched with position information of the collected position to grasp the distribution of hot water.

  Hot water erupted into the seawater from the bottom of the sea rises while being mixed and diluted. A hot water plume is a mass of water that has spread throughout the ocean after hot water diluted several hundred times continues to rise to the surface where it balances with the surrounding sea water. The process of forming a hydrothermal plume is one of the processes of mixing hot water and seawater. In such a water mass, microbial activity is high, chemical reaction such as precipitation, chemical species adsorption to suspended particles. Physical processes such as accumulation and sedimentation of suspended particles influence the chemical environment.

  The hot water and seawater are mixed in various proportions around the hydrothermal vent, and the chemical reaction accompanying the mixing proceeds. For this reason, the chemical environment of the hydrothermal activity zone varies greatly from place to place. Therefore, in order to clarify the chemical environment of the hydrothermal activity zone, it is necessary to consider time fluctuations in addition to spatial distribution, so it is necessary to move to a predetermined position and collect hot water at a predetermined temperature site. Is an indispensable matter.

  In such a situation, a sensor (temperature sensor, turbidity sensor) for detecting the state of seawater is provided, and a sampling means is configured by providing a seawater sampling means in the vicinity of the sensor, and the sampling means is moved to an arbitrary position. A moving means (submersible) that moves the sampling means to an arbitrary position, and when a predetermined condition of seawater is detected by the sensor, the seawater sampling means in the vicinity of the sensor collects the seawater at that location The seawater collection device that has made it possible to achieve this is achieved. It is used to clarify the spatial distribution of the physical and chemical properties of the water mass directly above the hydrothermal activity zone, and to elucidate, for example, the relationship between the hydrothermal activity of the seabed and the microbial ecosystem that develops there.

  For example, by collecting the hot water of the part corresponding to the temperature change by the seawater collection device of the present invention, the concentration of all the hot water-derived components decreases as the distance from the hot water ejection hole increases, For components considered to be preservative components, the concentration phenomenon of carbon dioxide can be explained with mixed dilution, and the reduction degree of hydrogen sulfide is larger than the mixed dilution. This indicates that hydrogen sulfide is removed by some chemical reaction in the process of mixing and diluting hot water and seawater.

Thus, by collecting hot water with the seawater collection device of the present invention, it is possible to know how the state of the hot water plume exists physically and chemically. In addition to the hot water plume, by collecting seawater at the site where the state of change detected by the sensor is collected, the carbon dioxide dilution status is clarified, and in the field of carbon dioxide ocean release, the optimal setting of the release location and the release location -Elucidated data can be applied to the optimal setting of the discharge flow rate with respect to the release time, the design of the release mechanism, etc. In addition, the present invention can be applied to elucidation of the state of emissions from living organisms due to the distribution of marine organisms and the physical changes of organisms.
(Example embodiment)
A seawater collection device according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic configuration of the entire seawater collection device according to an embodiment of the present invention, FIG. 2 is a front view of the water intake means, FIG. 3 is a perspective view of the collection means with the lid open, FIG. 4 is a perspective view of the collecting means with the lid closed, FIG. 5 is a schematic explanation of the state where seawater is collected by the seawater collecting device, and FIG. 6 is a hot water plume obtained based on the collection result. An example of the state is shown.

  As shown in FIG. 1, the seawater collection device 11 has a collection means 2 attached to the front of the submersible 1 (movement means) (front side in the movement direction), and the collection means 2 collects seawater collection means 3 for collecting seawater. Is attached. By attaching the seawater collecting device 11 to the front side in the moving direction of the submersible craft 1, it is possible to collect seawater that does not cause the seabed to be lifted by the propulsion means of the submersible craft 1 itself.

  The sampling means 2 will be described with reference to FIGS.

  As shown in the figure, the sampling means 2 is provided with a turbidity sensor 6 and a device (CTD: conductivity-temperature-depth recorder) 7 for measuring the vertical distribution of the density of seawater as sensors, and the turbidity sensor 6 and CTD 7. A plurality of (12 in the illustrated example) cylinders 4a to 4l are arranged in a reverse U-shape as seawater collecting means. For example, since the temperature is high and the turbidity is high in the vicinity of the hot water jet hole, the hot water jets from the seabed due to the distribution of the turbidity detected by the turbidity sensor 6 and the density of the seawater detected by the CTD 7. Hot water is detected. The cylinders 4a to 4l are arranged in a state where the axis extends in the movement direction.

  Turbidity detected by the turbidity sensor 6 and hot water (seawater) detected by the CTD7 are collected almost as they are in the cylinders 4a and 4l closest to the turbidity sensor 6 and the CTD7. 6 and the tubular bodies 4f and 4g farthest from the CTD 7, the turbidity detected by the turbidity sensor 6 and the hot water (seawater) in a state specified at a position spaced from the state detected by the CTD 7 to the maximum. ) Is collected. Also for the cylinders 4b to 4e and 4h to 4k, turbidity detected by the turbidity sensor 6 and hot water (seawater) in a state specified at a predetermined interval from the state detected by the CTD 7 are collected. The The cylinders 4a to 4l have relative positions with respect to the turbidity sensor 6 and the CTD 7, and are stored in control means (not shown).

  The cylinders 4a to 4l are in a state in which both ends are opened, and lids 5a to 5l are respectively provided at both openings of the cylinders 4a to 4l. The lids 5a to 5l provided in both the openings are urged and supported by the biasing means at the same time on the closing side, and the lids 5a to 5l of the two openings are resisted by the regulating means 10 against the biasing force. Is restricted to the open side.

  When the signal for collecting seawater is input, the restricting means 10 releases the restriction to the opening side of the lids 5a to 5l and causes the lids 5a to 5l between the openings to be closed by the urging means. It has become. That is, the restricting means 10 is a mechanism that holds the lids 5a to 5l between the two openings against the biasing means when the lids 5a to 5l are maintained on the open side, and has a holding force triggered by the closing operation signal. It is a mechanism to release.

  That is, before the seawater is collected, the lids 5a to 5l between the two openings are restricted to the open side by the regulating means 10 against the urging force, and the inside of the cylinders 4a to 4l is seawater as the submarine 1 sails. Are put into a state of being distributed. When the seawater is collected based on the detection signals from the turbidity sensor 6 and the CTD 7, a closing operation signal is output, the restriction to the opening side is individually released by the closing operation signal, and the lids 5a to 5l are energized. The urging force of the means individually closes and seawater is collected in the cylinders 4a to 4l. The closing operation of the lids 5a to 5l is individually controlled for each cylinder, and seawater is collected in a state where the collection site is specified by the positional relationship with the turbidity sensor 6 and the CTD 7.

  The seawater collection device 11 described above includes the cylinders 4a and 4l that are closest to the turbidity sensor 6 and the CTD 7, and the turbidity detected by the turbidity sensor 6 and a position that is specified at a position spaced from the CTD 7. Since the cylindrical bodies 4b to 4k are provided, hot water at a portion closest to the turbidity sensor 6 and the CTD 7 and hot water having a predetermined interval can be collected.

  In addition, by arranging the cylinders 4a to 4l in a circular shape and enabling the whole to rotate, the cylinder performing the sampling operation is moved to a position closest to the turbidity sensor 6 and the CTD 7 to collect hot water. Is also possible.

  In the seawater sampling device 11 having the above-described configuration, the submarine 1 is navigated to the vicinity of the hot water jet hole 22 (see FIG. 5) while detecting the state of the seawater with the turbidity sensor 6 and the CTD 7, The sampling means 2 is moved to a position such as temperature (situation boundary). When the turbidity sensor 6 and the CTD 7 detect preset positions of turbidity, temperature, etc., the lid 5 is closed by releasing the holding of the lid 5 by the regulating means 10 by the closing operation signal. Thereby, the hot water in the preset position can be reliably collected in a very short time.

  Incidentally, when hot water is collected in a container using a working manipulator without using the collecting means 2 of the present embodiment, the time from the start to the completion of the collection is long, so a predetermined turbidity is required. There is a limit to the collection of accurate hot water because the position where the collection is completed is deviated from the position of temperature, temperature, etc. On the other hand, when hot water is collected using the collection means 2, the time from the start to the completion of collection is extremely short (for example, for an instant of 1 to 2 seconds). On the other hand, the collection completion position is almost the same position, and accurate hot water can be collected.

  The sampling means 2 is moved to a position such as a predetermined turbidity and temperature, and sampling is repeated, and the distribution of hot water is derived in combination with information on the sampling position. By analyzing the status of the collected hot water, as shown in FIG. 6, the diffusion status of the component status, etc. (the time-dependent change of the component, the status of the deposit, etc.) with respect to the diffusion of the hot water from the ejection hole 23 can be obtained. The distribution 21 is obtained. The distribution 21 may be information distribution in various forms as long as it is a distribution of information obtained based on hot water collected at a predetermined position such as turbidity and temperature.

  Similarly, it is possible to collect seawater at the boundary of different situations by changing the type of sensor. Further, by providing the navigation means in the collection means 2, it is possible to collect the desired seawater by moving the collection means 2 to a place where the submersible craft 1 cannot approach.

  By using the seawater sampling device 11 described above, it is possible to move to a site where the situation changes in order to grasp the situation of the change in seawater and accurately collect hot water (seawater) at a predetermined site. By detecting the state of (seawater) and moving to the boundary part of the situation and collecting hot water (seawater) at the boundary part, it is possible to derive the distribution of the diffusion state of the components of the hot water.

INDUSTRIAL APPLICABILITY The present invention can be used in the industrial field of a seawater collecting device that moves to a site where the situation changes in order to grasp the state of change in seawater and collects seawater at a predetermined site.

1 is an overall schematic configuration diagram of a seawater collection device according to an embodiment of the present invention. It is a front view of a collection means. It is a perspective view of the sampling means in a state where the lid is open. It is a perspective view of the sampling means in the state where the lid is closed. It is a schematic explanatory drawing of the state which is collecting seawater with a seawater collection device. It is state explanatory drawing of the hot water plume obtained based on the collection result.

DESCRIPTION OF SYMBOLS 1 Submersible craft 2 Collecting means 3 Seawater collecting means 4 Cylinder 5 Lid 6 Turbidity sensor 7 CDT
DESCRIPTION OF SYMBOLS 10 Control means 11 Seawater sampling device 21 Distribution 22 Near jet hole 23 Jet hole

Claims (3)

A submersible that includes a sensor that detects the state of seawater, and that includes a seawater collecting means for collecting seawater in the vicinity of the sensor to constitute the collecting means, and moves the sampling means to an arbitrary position by moving the seabed. Equipped with a boat ,
The seawater collecting means includes a plurality of cylinders whose positions are specified with respect to the sensor and whose both ends are open, and a lid that is provided at the opening of the cylinder and individually closes.
The cylinder is arranged in a state in which the axial center extends in the moving direction so that seawater can be circulated with the lid open, and biasing means for biasing the lid from the outside of the cylinder to the closing side is provided. A seawater collecting device comprising an opening / closing means for individually restricting the lid to the open side against the seam and releasing the restriction individually when collecting seawater. In the seawater collecting device according to claim 1,
A seawater collecting apparatus , wherein a plurality of cylindrical bodies are provided with a plurality of positions specified with respect to the sensor . In the seawater collecting device according to claim 1 or 2,
The sensor is a temperature sensor and a turbidity sensor, and the seawater to be collected is hot water ejected from the seabed.

Images