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Magnetotelluric sounding method and system applied to geothermal exploration

A magnetotelluric sounding and geothermal technology, applied in the field of geophysical exploration, can solve problems such as inaccurate cross-sectional map information, and achieve the effect of improving the degree of automation and accuracy

Pending Publication Date: 2022-03-01
中国地质科学院地球物理地球化学勘查研究所
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Problems solved by technology

However, in the existing technology, when screening the original time series and result maps collected in the field, manual selection is often used, which makes the information such as cross-sectional maps not accurate enough.

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  • Magnetotelluric sounding method and system applied to geothermal exploration
  • Magnetotelluric sounding method and system applied to geothermal exploration

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and...

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Abstract

The invention relates to a magnetotelluric sounding method and system applied to geothermal exploration. The method comprises the following steps: acquiring an original time sequence; sequentially carrying out denoising, spectrum analysis and estimation spectrum matrix processing on the original time sequence to obtain a result graph; and inputting the result image into a trained image recognition model to obtain a magnetotelluric data processing image. According to the method, the result image is automatically identified and screened through the image identification model, so that the automation degree of obtaining the exploration result is improved, and the accuracy of obtaining the result image is improved.

Description

technical field [0001] The invention relates to the technical field of geophysical prospecting, in particular to a magnetotelluric sounding method and system applied to geothermal prospecting. Background technique [0002] The magnetotelluric method (Magnetotel luric mehtod, MT) is to use the natural electromagnetic field as the field source, and arrange instruments on the ground to measure the electromagnetic field of five components. For the original time series (time series) data of the five components recorded in observations, through spectrum (spectre) analysis, the spectrum of each field component is obtained, and then their respective and mutual self-power spectra and cross-power spectra (auto , cross-spectrum), and then calculate the tensor impedance reflecting the underground structure, as well as other parameters such as apparent resistivity and impedance phase. [0003] In the prior art, the magnetotelluric method (MT) is used to explore geothermal energy. The f...

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Application Information

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IPC IPC(8): G06V10/30G06V10/764G06K9/62G01V3/08G01V3/38
CPCG01V3/38G01V3/08G06F18/241
Inventor 姚大为
Owner 中国地质科学院地球物理地球化学勘查研究所
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