Study on the Locking Characteristics of Anninghe-Zemuhe-Xiaojiang Fault Zone
Abstract In this paper, we inversed for the slip rate and spatial fault locking of the Anninghe-Zemuhe-Xiaojiang fault zone based on a negative dislocation with horizontal GPS velocity data from 1999 to 2007 and 2009 to 2014. Using the inversion result and the historical earthquakes, we analyze the potential for a large earthquake. The result shows the Wenchuan earthquake enhanced the locking of Xiaojiang and the middle segment of Zemuhe, but didn’t affect the locking of Anninghe or the southern and northern segment of Zemuhe. Moreover, the northern section of Anninghe, the southern and northern segment of Zemuhe , the southern segment of Xiaojiang are strongly locked before and after the Wenchuan earthquake, with a locking depth of more than 20 km. Considering historical earthquakes and other results, we conclude that these segments are seismogenic faults with large earthquake potential.
Key words :
GPS
negative dislocation model
inversion
the Wenchuan earthquake
fault locking
Cite this article:
SONG Jian,YANG Shaomin,WANG Wei et al. Study on the Locking Characteristics of Anninghe-Zemuhe-Xiaojiang Fault Zone[J]. jgg, 2016, 36(6): 490-.
SONG Jian,YANG Shaomin,WANG Wei et al. Study on the Locking Characteristics of Anninghe-Zemuhe-Xiaojiang Fault Zone[J]. jgg, 2016, 36(6): 490-.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2016/V36/I6/490
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