Complete Coulomb stress changes induced by the Ms7.6 earthquake in Lancang-Gengma, Yunnan and triggering of aftershocks by dynamic and static stress - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Sciences in China Series D Earth Sciences Year : 2007

Complete Coulomb stress changes induced by the Ms7.6 earthquake in Lancang-Gengma, Yunnan and triggering of aftershocks by dynamic and static stress

Abstract

The spatiotemporal evolution patterns of complete Coulomb stress changes caused by 1988 Ms7.6 earthquake in Lancang-Gengma, Yunnan, are calculated and studied. And the triggering problems of Ms7.2 Gengma shock occurring 13 minutes after the main shock and of Ms5.0―6.9 aftershocks within 24 days after the main shock are discussed. The results show that the spatial distribution patterns of complete Coulomb stress changes of the Ms7.6 main shock are strongly asymmetric. The areas of positive dynamic and static Coulomb stress are both coincident well with the strong aftershocks' loca-tions. The Ms7.2 Gengma shock and most of strong aftershocks are subjected to the triggering effect of dynamic and static Coulomb stresses induced by the Ms7.6 Lancang earthquake.

Dates and versions

insu-00348204 , version 1 (18-12-2008)

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Cite

X. P. Wu, X. L. Hu, Michel Bouchon, Yue Huang, J. F. Hu, et al.. Complete Coulomb stress changes induced by the Ms7.6 earthquake in Lancang-Gengma, Yunnan and triggering of aftershocks by dynamic and static stress. Sciences in China Series D Earth Sciences, 2007, 50 (11), pp.1655 à 1662. ⟨10.1007/s11430-007-0107-8⟩. ⟨insu-00348204⟩
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