作者机构:[1]Department of Earth Science, Rice University, Houston, TX 77005, USA, [2]Key Laboratory of the Earth's Deep Interior, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
相关基金:Acknowledgements We thank the Data, Management Center of the China Earthquake Administration for providing seismic data. Discussions with Steve Grand and Qifu Chen were very helpful in preparing the manuscript. We also thank two anonymous reviewers for their constructive reviews. This work was supported by NSF grant EAR-063566 (F.N.) and National Natural Seience Foundation of China grant 40774042 (J.L.).