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A Three-dimensional Magnetotelluric Numerical Simulation Method Based on Integral Equation Method

An integral equation method and magnetotelluric technology, applied in the field of numerical simulation, can solve problems such as the large dimension of equations, affecting the efficiency of forward modeling, and large storage capacity, and achieve high calculation accuracy, improved calculation efficiency, and high calculation efficiency.

Active Publication Date: 2022-02-08
CENT SOUTH UNIV
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Problems solved by technology

However, the existing numerical simulation methods are all calculated based on differential or integral equations in the space domain, and finally synthesize the linear equations in the space domain
The dimension of the final equation system under large-scale and complex conditions is huge, which leads to a large amount of calculation and a large amount of storage required by the existing methods, which affects the efficiency of forward modeling

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  • A Three-dimensional Magnetotelluric Numerical Simulation Method Based on Integral Equation Method
  • A Three-dimensional Magnetotelluric Numerical Simulation Method Based on Integral Equation Method
  • A Three-dimensional Magnetotelluric Numerical Simulation Method Based on Integral Equation Method

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[0030] 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the figure). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, in the present inve...

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Abstract

The invention discloses a three-dimensional magnetotelluric numerical simulation method based on the integral equation method. For the three-dimensional integral equation satisfied by the space-domain magnetotelluric field, Fourier transform is used to transform the three-dimensional integral into a one-dimensional vertical integral under many wave numbers, which can effectively The calculation amount is reduced, the storage requirement is reduced, and the calculation efficiency is high, and the method uses an iterative method to solve the integral equation, occupies less memory, and has a fast calculation speed, avoiding the direct solution of the linear equation system. The invention is applied to the field of magnetotelluric numerical simulation technology, and can be applied to the frequency band 10 of magnetotelluric research 4 ~10 ‑4 Any frequency within Hz has good applicability for large-scale magnetotelluric numerical simulation, high calculation efficiency and high calculation accuracy, and can effectively improve the accuracy and efficiency of 3D magnetotelluric data inversion.

Description

technical field [0001] The invention relates to the technical field of numerical simulation, in particular to a three-dimensional magnetotelluric numerical simulation method based on an integral equation method. Background technique [0002] Due to the low cost of field work and simple operation, the magnetotelluric sounding method (MT) has the advantages of large exploration depth, no high-resistance shielding, and sensitivity to high-conductivity layers. an effective exploration method. [0003] The three-dimensional magnetotelluric numerical simulation methods mainly include finite difference method, finite element method, finite volume method and integral equation method. Among them, the integral equation method has certain research value for the development of high-efficiency and high-precision forward calculation algorithms because it only needs to divide the abnormal body, occupies less memory, and has a small amount of calculation. However, the existing numerical s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F17/11G06F17/14G06F111/10
CPCG06F30/20G06F17/14G06F17/11G06F2111/10
Inventor 戴世坤陈轻蕊凌嘉宣李昆
Owner CENT SOUTH UNIV
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