Investigation of rupture process of the 1999 M =5.4 Xiuyan, Liaoning, earthquake sequence |
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| Authors: | Chen Xue-zhong Gai Zeng-xi Zhou Shi-yong Guo Tie-shuan and Zhu Ling-ren |
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| Institution: | (1) Institute of Geophysics, China Seismological Bureau, 100081 Beijing, China;(2) Department of Geophysics, Beijing University, 100871 Beijing, China;(3) Center for Analysis and Prediction, China Seismological Bureau, 100036 Beijing, China;(4) Seismological Bureau of Xinjiang, Uygur Autonomous Region, 830011 ürümqi, China |
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| Abstract: | Conclusions The sequence of the November 29, 1999 Xiuyan, Liaoning, earthquake withM
S=5.4 is relocated, and its rupture process is analyzed. Results are as follows:
The rupture extended mainly before the January 12, 2000,M
S=5.1 earthquake. There are two phases of rupture extending: The first phase was before the November 29, 1999,M
S=5.4 earthquake, epicenters were situated within a small region with a dimension of about 5 km, and the focal depth increased.
It shows that the rupture mainly extended from shallow part to deep in the vertical direction. The second phase was between
theM
S=5.4 earthquake and theM
S=5.1 earthquake, earthquakes migrated along southeast, the focal depth decreased. It indicates that the rupture extended along
southeast and from deep to shallow part.
Foundation item: The Project of “Mechanism and Prediction of the Strong Continental Earthquake” (95-13-05-04).
Contribution No. 01FE2017, Institute of Geophysics, China Seismological Bureau. |
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| Keywords: | Xiuyan earthquake master event location method rupture process |
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