Large slip rate detected at the seismogenic zone of the 2008 MW7.9 Wenchuan earthquake
Qifu Chen1, Le Li1, 2, Fenglin Niu2, Jinrong Su3
1 Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China 2 Department of Earth Science, Rice University, Houston, TX 77005, USA 3 Earthquake Administration of Sichuan Province, Chengdu 610004, China
Large slip rate detected at the seismogenic zone of the 2008 MW7.9 Wenchuan earthquake
Qifu Chen1, Le Li1, 2, Fenglin Niu2, Jinrong Su3
1 Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China 2 Department of Earth Science, Rice University, Houston, TX 77005, USA 3 Earthquake Administration of Sichuan Province, Chengdu 610004, China
摘要Repeating microearthquakes were identified along the edge of the rupture area of the 2008 MW7.9 Wenchuan earthquake. Slip rates at depths derived from seismic moments and recurrence intervals are found to be systematically larger than those observed at surface. This large deep slip rate may explain the odds about the occurrence of this unanticipated event. Our observations here suggested that seismic hazard could be underestimated if surface measurements alone are employed.
Abstract：Repeating microearthquakes were identified along the edge of the rupture area of the 2008 MW7.9 Wenchuan earthquake. Slip rates at depths derived from seismic moments and recurrence intervals are found to be systematically larger than those observed at surface. This large deep slip rate may explain the odds about the occurrence of this unanticipated event. Our observations here suggested that seismic hazard could be underestimated if surface measurements alone are employed.
基金资助:China Earthquake Administration under grants 200708008 and IES02092405
通讯作者:
Qifu Chen
E-mail: chenqf@seis.ac.cn
引用本文:
Qifu Chen, Le Li, Fenglin Niu, Jinrong Su. Large slip rate detected at the seismogenic zone of the 2008 MW7.9 Wenchuan earthquake[J]. 《地震学报》英文版, 2011, 24(1): 101-106.
Qifu Chen, Le Li, Fenglin Niu, Jinrong Su. Large slip rate detected at the seismogenic zone of the 2008 MW7.9 Wenchuan earthquake. Earthquake Science, 2011, 24(1): 101-106.
