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.
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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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Chen, Xz., Gai, Zx., Zhou, Sy. et al. Investigation of rupture process of the 1999M=5.4 Xiuyan, Liaoning, earthquake sequence. Acta Seimol. Sin. 14, 701–704 (2001). https://doi.org/10.1007/BF02718081
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DOI: https://doi.org/10.1007/BF02718081