Deep seabed boundary layer controllable sequence water sampling device and laying method

Abstract

The invention provides a deep seabed boundary layer controllable sequence water sampling device and a laying method. The deep seabed boundary layer controllable sequence water sampling device comprises a water sampling frame, a water sampling bottle, an acoustic releaser, a floating body, a load rejection counterweight and a flower disc releasing mechanism. According to the technical scheme of the invention, a plurality of water sampling bottles can be distributed and recycled at one time to realize asynchronous controllable water sampling, so that the requirement of continuous water sampling in event change observation research is met, and continuous tracking of event process change is emphasized; the water sampling process is controllable and reliable, and use is safe and convenient. Throwing type laying and throwing weight self-floating recovery are adopted, a workboat does not need to be positioned dynamically, and the requirements for the workboat and the working sea condition are lowered; equipment can be put on the bottom in advance to wait for disturbance recovery, cable connection is avoided in the water sampling process, and the water sampling disturbance problem of the bottom boundary layer is effectively solved. The device is reasonable in structural design, stable in working process, wide in application range and high in scientific and commercial value.

Description

technical field [0001] The invention relates to the technical field of marine exploration, in particular to a controllable sequential water harvesting device and a deployment method for a deep seabed boundary layer. Background technique [0002] Obtaining the right seawater samples is the first and most important step in marine research. At present, the water harvesting device is mainly used for sampling and analysis of the upper ocean water body, and the control method is mostly connected by coaxial cable or steel cable, which has certain requirements for the operation ship and the operation sea state, and the dragging disturbance of the bottom sitting device is inevitable. The purpose of truly reflecting the samples of the bottom boundary layer cannot be achieved. CN105823655A proposes a cableless deep-water water harvesting device, which uses mechanical structures such as decoupling acoustic releasers to realize water harvesting, but it can only realize multi-bottle sync...

AI Technical Summary

Problems solved by technology

At present, the water harvesting device is mainly used for sampling and analysis of the upper ocean water body, and the control method is mostly connected by coaxial cable or steel cable, which has certain requirements for the operation ship and the operating sea conditions, and the dragging disturbance of the bottom sitting device is inevitable. Can not achieve the purpose of truly reflecting the bottom boundary layer samples

CN105823655A proposes a cableless deep-water water harvesting device, which uses mechanical structures such as decoupling acoustic releasers to realize water harvesting, but it can only realize multi-bottle synchronous water harvesting, and cannot realize multi-time sequence controllable water harvesting, and cannot complete event monitoring. Continuous tracking of process changes (such as internal solitary waves, etc.)

At present, there is no device that satisfies the controllability of the time series, the small disturbance of the water intake process, and the continuous water extraction of the bottom boundary layer.

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