ON GENESIS OF YESANGUAN MICRO-EARTHQUAKESIN THREE GORGES AREA ON YANGTZE RIVER
Di Lisha 1) ; and Chen Junhua 1,2)
1) Institute of Seismology, CEA, Wuhan 4300712) Department of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026
Abstract The microearthquakes in Yesanguan region have the features of intermittency and low frequency. They distribute on the south side of Xianglong hill anticline——the watershed between Yangtze river and Qingjiang river. Having studied the parameters of the microearthquakes in recent years, we find that the genesis is different from the natural earthquake and reservoir earthquake. It seems to be caused by the occurrence of coal mining goaf where the shallow layer’s stress of the earthsurface converges and strain accumulates, leads the rock body become unstable and induce these earthquakes.
Key words ：
micro-earthquake
seismogenesis
geologic structure
focal parameter
induced earthquake
Received: 01 January 1900
Corresponding Authors:
Di Lisha
Cite this article:
Di Lisha ,and Chen Junhua. ON GENESIS OF YESANGUAN MICRO-EARTHQUAKESIN THREE GORGES AREA ON YANGTZE RIVER[J]. , 2007, 27(专刊): 62-66.
Di Lisha ,and Chen Junhua. ON GENESIS OF YESANGUAN MICRO-EARTHQUAKESIN THREE GORGES AREA ON YANGTZE RIVER[J]. jgg, 2007, 27(专刊): 62-66.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2007/V27/I专刊/62
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