Towrope type ocean controllable source electromagnetism and earthquake data collection system
A technology for collecting system and seismic data, applied in radio wave measurement system, electric/magnetic exploration, seismic signal receiver, etc., can solve problems such as single physical parameter, only measuring one vertical magnetic field, difficult to solve geological problems completely, etc. To achieve the effect of improving detection accuracy and reliability
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[0026] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0027] The streamer type marine controlled source electromagnetic prospecting system consists of figure 1 The cable ship 1 shown in the figure is composed of a towed dipole current source 2 with a dipole length of 150 meters to 250 meters, and 9 or more marine electromagnetic data acquisition systems. Seven or more acquisition systems are installed on each cable, and each pair of acquisition systems is composed of an electric field sensor (non-polarized electrode pair) 3 and a three-component induction coil type or three-component fluxgate type magnetic field sensor 4, and the electromagnetic acquisition system Can be evenly or non-uniformly distributed in the streamer.
[0028] The specific placement method of the electric field sensor (non-polarized electrode pair) 3 is to be placed in the middle position between every two three-component induction coil type or th...
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