1. State Key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration Beijing China
2. College of Earth Ocean and Atmospheric Sciences Oregon State University Corvallis OR USA
3. Shanxi Taiyuan Continental Rift Dynamics National Observation and Research Station Taiyuan China
4. Department of Earth and Atmospheric Sciences University of Houston Houston TX USA
5. Now at Department of Geological Sciences University of North Carolina Chapel Hill NC USA