JPH03128795A - Submerged measuring station - Google Patents

Abstract

PURPOSE:To provide stereo observation data by which various changes in chemical and physical environment in water in the vicinity of a sea bottom are detected by a method wherein various measuring devices are mounted at intervals of a given distance to the lock cable of an underwater balloon floating from a seat bottom station in a kinetic dynamically stable shape secured on a sea bottom. CONSTITUTION:A kinetic dynamically stable shape is selected so that azimuth and vertical movement of an underwater balloon 1 are stably effected and vibration and hunting phenomenon are prevented from occurring. By measuring azimuth of the under water balloon 1 and a moving amount from a seat bottom station 3, the direction and the speed of the flow of sea water on a seat bottom B can be measured. Various measuring devices 4 are mounted at intervals of a given distant to the under balloon 1 and a cable 2 being a lock cable in water, data obtained therefrom is electrically transmitted to the recording device of a station 3 through the cable 2 to record the data, which is accumulated for a long period. Further, the cable 2 is sufficiently lengthened, and various measuring data of a layer further upper than a sea bottom B surface.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention mainly relates to an underwater measuring station that measures changes in the chemical environment and physical environment in water such as the seabed over a long period of time.

[Conventional technology]

In recent years, as marine development has been in the spotlight, there has been a need to collect observational data on changes in various chemical and physical environments near the ocean floor, such as water temperature, water quality, water current, and velocity. .

Conventionally, in order to collect this type of data, a submarine station is firmly fixed to the seabed surface, and various measuring instruments are attached to the submarine station to collect measured data.

However, such conventional observations collect data on the ocean floor, and there is a problem in that three-dimensional data such as three-dimensional data near the ocean floor cannot be obtained.

[Problem to be solved by the invention]

The present invention was made in order to solve the above-mentioned conventional problems, and is an underwater measurement station that can obtain three-dimensional observation data in order to know changes in various chemical and physical environments underwater near the seafloor. The problem to be solved is to provide the following.

[Means to solve the problem]

As a means for solving the above problems, the underwater measurement station of the present invention has a kinematically stable shape in a fluid, for example, an airship shape, and is anchored from an underwater station fixed to the bottom of the water. It is constructed by attaching various measuring devices at predetermined intervals in the vertical direction of the anchoring rope of an underwater balloon that can maintain a horizontal floating state at a predetermined position in the water via a tether cable, etc. The three-dimensional observation data obtained can be electronically transmitted and recorded to a recording device installed at an undersea station via a tether cable, etc., and the data can be stored over a long period of time.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view showing the installed state of the underwater measurement station in one embodiment of the present invention, FIG. 2 is a front view of the underwater balloon shown in FIG. 1, and FIG. It is a perspective view arranged at regular intervals on a horizontal plane.

First, as shown in FIGS. 1 and 2, an underwater balloon 1 that has a shape that is kinematically stable in the fluid, for example, an airship shape and can maintain a predetermined position in the fluid, is placed horizontally in the water. The boat is floated, its bow end is fixed to one end of a tether cable 2 which also serves as a mooring cable, and the boat is moored to a submarine station 3 firmly fixed to the seabed B via the tether cable 2 of the required length.

As described above, in order to ensure that the underwater balloon 1 has a stable azimuth and vertical movement and does not cause vibration or hunting phenomena, a kinematically stable shape is selected as described above, and the underwater balloon 1 is Direction and submarine station 3
By measuring the amount of movement, the direction and speed of seawater flow on the seabed B can be measured.

In addition, various measuring instruments 4 are attached at regular intervals to the underwater balloon 1 and the tether cable 2, which is an underwater mooring cable, and the data obtained from these is transmitted electronically to a recording device installed at the submarine station 3 through the tether cable 2. record and accumulate data over a long period of time.

Furthermore, by making the tether cable 2, which is a mooring cable, sufficiently long, it becomes possible to manually collect various measurement data on the upper layer of the seabed from the 8 surfaces. By placing it in the center, it is also possible to obtain more three-dimensional observation data at the same time.

The measurement data recorded and accumulated at each underwater measurement station in Fig. 3 will be collected periodically by an appropriate means. It is also possible to collect records by acoustic radio waves from each underwater measurement station 3.

The underwater balloon 1 floating at a predetermined position underwater may be made of an incompressible liquid having a specific gravity slightly lower than the specific gravity of the seawater surrounding the floating position, for example.
It is also possible to use underwater floating bodies consisting of retractable membrane containers filled with water and sealed.

〔Effect of the invention〕

As described above, according to the underwater measurement station of the present invention, it is possible to obtain three-dimensional data near the seafloor surface over a long period of time with a relatively inexpensive device, and various chemical phenomena in the water near the seafloor surface can be obtained. It is extremely effective in accurately understanding changes in the physical and physical environment.

In particular, since the underwater measuring station of the present invention is anchored underwater from a bottom station fixed to the bottom of the water, it is possible to obtain powerful data for a long period of time without being affected by tidal currents or wind and waves.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the installed state of the underwater measurement station in one embodiment of the present invention, Fig. 2 is a front view of the underwater balloon shown in Fig. 1, and Fig. 3 shows a plurality of underwater measurement stations shown in Fig. 1. It is a perspective view arranged at regular intervals on a horizontal plane. 1... Underwater balloon, 2... Tether cable, 3...
...Undersea station, 4...Various measuring instruments, B...
・Undersea.

Claims (1)

[Claims] The underwater balloon has a hydrodynamically stable shape and floats to a predetermined position in the water from a bottom station fixed to the bottom of the water via a rope. Various measuring instruments are installed at predetermined intervals on the rope. Installable underwater measurement station.