Frame type three-parameter marine environment vertical survey device

Abstract

The invention discloses a frame type three-parameter marine environment vertical survey device, which relates to a marine environment investigation tool. According to the technical scheme provided by the invention, a zooplankton vertical drag net, a phytoplankton vertical drag net and marine physical special survey equipment are adopted; the device is characterized in that a frame with length of 2 m and width of 0.8 m which is made of circular steel pipes is arranged, wherein the inner sides of the two ends of the frame are welded into square frames with side lengths of 800 mm and 370 mm respectively; a bracket with a U-shaped ring is connected in the middle of the two square frames; the square frames at the two ends are used for fixedly mounting the zooplankton vertical drag net and the phytoplankton vertical drag net respectively; the U-shaped ring suspension marine physical special survey equipment is arranged in the middle of the bracket close to the phytoplankton vertical drag net; four cross ropes are tied to the corners of the frame; the four cross roes are used for keeping balance of the survey device in the survey process; and the upper ends of the four cross ropes are connected with one drag rope for controlling the survey operation depth.

Description

technical field [0001] The present invention relates to a tool for marine environment investigation. Background technique [0002] The current marine environmental survey mainly includes marine biological and marine physical surveys. The marine biological survey network is composed of 1 genus, 3 rhizomes, 1 net mouth ring, 1 net body, 1 net bottom pipe and weight. vertical survey trawl. Marine biological resource surveys can be divided into large-scale plankton nets and small-scale plankton nets according to different sampling objects. The structures of the two types of nets are also quite different. Different, the two kinds of nets need to be sampled separately. The marine physical survey is mainly completed by special equipment (temperature, salinity, depth profiler or multi-functional water quality meter). The survey requirements are the same as the biological vertical survey network, and data collection is carried out in the vertical direction. For vertical trawling a...

AI Technical Summary

Problems solved by technology

The marine physical survey is mainly completed by special equipment (temperature, salinity, depth profiler or multi-functional water quality meter). The survey requirements are the same as the biological vertical survey network, and data collection is carried out in the vertical direction. For vertical trawling and collection of marine biological parameters, three vertical sampling surveys are required for each sampling point, which takes about 180 minutes of sampling time. Due to the influence of wind, current and other external environments during the survey process, ships are prone to ship drifting, especially It is difficult to keep the three sampling positions consistent in a windy environment, which may easily cause errors in the analysis of sampling results

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