汶川8.0级地震近场流体的同震响应与震后效应机理的数值模拟研究

EARTHQUAKE ›› 2012, Vol. 32 ›› Issue (1): 49-58.

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Numerical Simulation of Near-field Fluid Coseismic Response and Post-seismic Effects of the Wenchuan 8.0 Earthquake

SI Xue-yun¹, SHAO Zhi-gang², ZHOU Long-quan³, ZHANG Lang-ping², YAN Rui³

1. Earthquake Administration of Ningxia Hui Autonormous Region, Yinchuan 750001, China;
2. institute of Earthquake science, CEA, Beijing 100036, China;
3. China Earthquake Network Centers, CENC, Beijing 100045, China

Received:2011-04-26 Revised:2011-09-16 Online:2012-01-31 Published:2021-08-20

Abstract

Abstract: The 2008 Wenchuan M8.0 earthquake caused a wide range of notable co-seismic and post-earthquake responses in fluid observation. We find the stations with notable change of near-field fluid observation by analysis of the data. Based on theoretical calculations of pore pressure changes caused by perpetual deformation with the earthquake, we discuss the physical mechanism of notable coseismic and post-earthquake changes in fluid observation. Then, in order to investigate the special characteristics of fluid effects caused by strong earthquakes, we separately calculate fluid response with different faulting styles and different magnitudes. It is expected that calculated near-field fluid effects can provide meaningful reference for mechanism analysis of fluid observation.

Key words: The 2008 Wenchuan M8.0 earthquake, Near-field fluid observation, Pore pressure, Physical mechanism

CLC Number:

P315.7

SI Xue-yun, SHAO Zhi-gang, ZHOU Long-quan, ZHANG Lang-ping, YAN Rui. Numerical Simulation of Near-field Fluid Coseismic Response and Post-seismic Effects of the Wenchuan 8.0 Earthquake[J]. EARTHQUAKE, 2012, 32(1): 49-58.

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Numerical Simulation of Near-field Fluid Coseismic Response and Post-seismic Effects of the Wenchuan 8.0 Earthquake

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