Magnetotelluric synchronizing detection and real-time inversion method and system

Abstract

The present invention discloses a magnetotelluric synchronizing detection and real-time inversion method and system. The system comprises a detection inversion host (M) with a wireless networking function and N<2>-1 detection inversion extensions (Si) with wireless communication functions, wherein the distance between each two detection inversion extensions is D, i=1, 2, ..., N<2>-1, and N is an odd number. The detection inversion host is used for collection of magnetic field signals and electric field signals of measurement points, wireless networking and cooperation, synchronizing detectionand real-time inversion control of the detection inversion extensions in a detection area, and the detection inversion extensions are used for synchronizing collection of electric field signals of themeasurement points and real-time inversion of detection data of the measurement points under the cooperative control of the detection inversion host. The detection inversion host and the detection inversion extensions synchronously perform detection and inversion in real time to avoid that a time-space factor influences improvement of observation data quality while improving the work efficiency,and therefore the magnetotelluric synchronizing detection and real-time inversion method and system can be widely used in fields of underground mineral resource detection, construction detection of the earth's crust and the upper mantle and the like.

Description

technical field [0001] The invention relates to a geophysical exploration method and system for magnetotelluric sounding, in particular to a method and system for magnetotelluric synchronous detection and real-time inversion. Background technique [0002] Magnetotelluric method (MT, Magneto-telluric) is a kind of geophysical exploration that uses the high-altitude vertically incident natural alternating electromagnetic wave as the excitation field source, and studies the electrical structure of underground geological bodies by observing the mutually orthogonal electric and magnetic fields on the surface. method. Because the magnetotelluric sounding method has the advantages of no artificial source, less labor requirements, low work cost, not shielded by high-resistivity layers, sensitive to low-resistivity layers, large exploration depth, strong resolution, and narrow equivalence range, etc., Therefore, it has received greater attention and developed rapidly since it was pr...

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Problems solved by technology

[0005] At present, most of the synchronous detection and real-time inversion technologies of the magnetotelluric sounding equipment at home and abroad have not been applied to the actual detection work. Generally, only one device is used in the detection operation to detect the measurement points one by one. For larger Even if the same equipment is used for online work, high equipment prices and complicated online operations become obstacles to synchronous detection. In terms of performance, the work mode of on-site data collection and indoor inversion data is generally adopted. A large amount of observation data requires a long inversion time, which cannot guide on-site observation work.

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