A fast numerical simulation method for two-dimensional magnetotelluric field

A numerical simulation and electromagnetic field technology, applied in electric/magnetic exploration, CAD numerical modeling, complex mathematical operations, etc., can solve problems that limit the forward and inverse interpretation of large-scale magnetotelluric exploration, and it is difficult to deal with undulating terrain and complex Time-consuming problems such as the formation of abnormal bodies and coefficient matrices, etc., to achieve the effects of reducing calculation time, efficient solution, and high parallelism
CN114297905BActive Publication Date: 2022-06-03CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2022-06-03

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Abstract

The invention provides a fast numerical simulation method of two-dimensional magnetotelluric field, which combines the finite element method and Fourier transform, and converts the two-dimensional partial differential problem into different wave numbers by performing Fourier transform along the horizontal direction One-dimensional ordinary differential problems that are independent of each other, with high parallelism, effectively reduce the calculation amount and improve the calculation efficiency; provide conditions for the refined numerical simulation of the magnetotelluric method under large-scale conditions; after verification, adopt the present invention The calculation result of the method is within the range of the error bars of the international public data included in the literature of Zhdanov et al.
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Description

A Fast Numerical Simulation Method for Two-Dimensional Electromagnetic Field technical field The present invention relates to the technical field of geophysical methods, be specifically related to a kind of fast numerical model of two-dimensional magnetotelluric field pseudo method. Background technique Magnetotelluric method is a kind of frequency domain electromagnetic exploration method, and it utilizes the natural electromagnetic field of vertical incidence in high altitude. (Band is 10 ‑4 ‑10 4 Hz) and then realize the method of detecting underground geological structures and abnormal bodies, which has the advantages of simple operation, engineering It has the advantages of high efficiency, low cost, and large detection depth. At present, this method has been widely used in geological exploration, metal mine With the exploration of oil and gas resources and the study of geodynamics and other fields, more and more obvious economic and social benefits hav...

Claims

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