Study on Aquifer Structure Identification based on 2D Magnetotelluric NLCG Inversion

HUANG Lei; HOU Zeming; HAN Xuan; LIU Zhiqiang; GOU Qingsong

doi:10.19751/j.cnki.61-1149/p.2022.01.021

Northwestern Geology > 2022 > 55(1): 249-254. > DOI: 10.19751/j.cnki.61-1149/p.2022.01.021

HUANG Lei, HOU Zeming, HAN Xuan, et al. Study on Aquifer Structure Identification based on 2D Magnetotelluric NLCG Inversion[J]. Northwestern Geology, 2022, 55(1): 249-254. DOI: 10.19751/j.cnki.61-1149/p.2022.01.021

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Study on Aquifer Structure Identification based on 2D Magnetotelluric NLCG Inversion

1. Water Conservancy and Civil Engineering College of Inner Mongolia Agricultural University, Hohhot 010018, Inner Mongolia, China;
2. Inner Mongolia Key Laboratory of Water Resources Protection and Utilization, Hohhot 010018, Inner Mongolia, China;
3. Chongqing Institute of Geology and Mineral Resources, Chongqing 401120, China

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Received Date: March 01, 2021
Revised Date: May 08, 2021
Available Online: July 28, 2022
Published Date: March 04, 2022

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Abstract

Abstract

Groundwater survey is the premise of reasonable development and utilization of grassland water resources. Hence finding out the aquifer structure is of great importance for groundwater survey.This paper used magnetotelluric method (MT) to identify aquifer structure.The corresponding relationship between electrical properties and strata was interpreted by two-dimensional nonlinear conjugate gradient(NLCG) inversion. The forward and inversion experiments of typical layered aquifer model and local aquifer model were carried out,and the validity of the inversion algorithm for the interpretation of geologic body of low resistivity aquifer was verified.The results provide reference for groundwater survey and a method for similar data inversion.
- magnetotelluric method,
- nonlinear conjugate gradient method,
- aquifer structure identification,
- inversion

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