Multi-component seabed magnetic field measurement method and device

Abstract

The invention discloses a multi-component seabed magnetic field measurement method and device, and the device comprises a ship body and a satellite receiver, the ship body is provided with a radar and a retracting and releasing assembly, the retracting and releasing assembly is connected with a buoyancy assembly through a connecting rope, the buoyancy assembly comprises a buoyancy cabin, and an instrument cabin is connected below the buoyancy assembly. An electromagnetic instrument is installed in the instrument cabin through a hydraulic rod and a connecting plate, an adjusting frame assembly is fixedly arranged at the bottom of the instrument cabin and comprises a frame body and an adjusting assembly, the frame body is hinged to the adjusting assembly through an adjusting rod, a balance weight bin is arranged at the bottom of the adjusting frame assembly, and the balance weight bin is connected with the adjusting assembly. The balance weight bin is filled with part of gravel, adjusting plates are arranged on the two sides of the outer wall of the balance weight bin, the instrument bin hovers at a certain depth in water by controlling the folding and unfolding assembly and the adjusting assemblies, and therefore water depth range data are collected and transmitted to a land control room through the satellite receiver.

Description

technical field [0001] The invention belongs to the field of geophysical measurement, and in particular relates to a multi-component submarine magnetic field measurement method and device. Background technique [0002] As a commonly used geophysical detection technology, magnetic field detection has been widely used. In the submarine magnetic survey, the magnetometer is placed on the seabed for long-term observation. It is used for submarine structure detection, submarine geomagnetic daily variable station, submarine seismic monitoring and Target detection and other requirements are important technical means in the field of marine research. In 1973, the Scripps Institution of Oceanography (SIO) in the United States developed a set of magnetic deep dragging system composed of proton magnetometers (Klitgord, 1976); SIO also developed a set of special deep dragging gravity And magnetic force measurement system, its deep drag magnetic system uses low-cost three-axis fluxgate se...

AI Technical Summary

Problems solved by technology

It is characterized by the use of at least two instrument cabins, which are large in size and only use slings to store and deploy equipment, resulting in high weight of detection equipment

Chinese invention patent, application number 201210361530.X, application date 2012.09.26 discloses a single-chamber spherical three-component submarine magnetometer. The device is connected to the base through an integrated instrument cabin through a decoupling mechanism. It has the characteristics of simple system and easy recovery. , but the device cannot be suspended stably, thus measuring the magnetic field data of the fixed seawater depth, and the base cannot make the device fall on the bottom surface more smoothly when falling, and there is a problem of inaccurate measurement results

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