Microtremor signal simulation and its application in microtremor exploration

LI Chuan-Jin; WANG Qiang; JIAN Xiang; ZHENG Tao; ZHAN Su-Hua; CHEN Shao-Wei

doi:10.11720/wtyht.2023.1303

2023 Vol. 47, No. 4

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Article navigation > Geophysical and Geochemical Exploration > 2023 > 47(4): 1040-1047

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LI Chuan-Jin, WANG Qiang, JIAN Xiang, ZHENG Tao, ZHAN Su-Hua, CHEN Shao-Wei. 2023. Microtremor signal simulation and its application in microtremor exploration. Geophysical and Geochemical Exploration, 47(4): 1040-1047. doi: 10.11720/wtyht.2023.1303

Citation:

LI Chuan-Jin, WANG Qiang, JIAN Xiang, ZHENG Tao, ZHAN Su-Hua, CHEN Shao-Wei. 2023. Microtremor signal simulation and its application in microtremor exploration. Geophysical and Geochemical Exploration, 47(4): 1040-1047. doi: 10.11720/wtyht.2023.1303

Microtremor signal simulation and its application in microtremor exploration

1. School of Civil Engineering,Fujian University of Technology,Fuzhou 350118,China;
2. Institute of Geotechnical Engineering,Fujian University of Technology,Fuzhou 350118,China;
3. Key Laboratory of Underground Engineering in Universities of Fujian Province,Fujian University of Technology,Fuzhou 350118,China

Received Date: 16 June 2022

Revised Date: 01 February 2023

Publish Date: 11 October 2023

Abstract

Abstract

This study synthesized microtremor signals using the normal mode superposition.The dispersion curves of the synthesized microtremor signals were calculated using the spatial autocorrelation method,and the calculated results agreed well with theoretical dispersion curves.The simulation of microtremor signals involves many parameters,which are of great significance for microtremor exploration.As shown by results from numerical experiments of these parameters,the hypocentral distance and array size had a significant influence on the results.Moreover,high-order surface waves should be considered for complex strata,while small-size arrays tended to yield high-frequency dispersion information at quiet observation sites,thus improving the resolution of shallow strata.Therefore,it is necessary to consider the influences of hypocenter distribution,array size,and high-order surface waves on exploration results in microtremor exploration.
- microtremor signal /
- normal mode superposition /
- microtremor exploration /
- dispersion curve /
- spatial autocorrelation method