1. Laboratory of Seismology and Physics of Earth's Interior, School of Earth and Space Sciences; University of Science and Technology of China; Hefei China
2. Department of Geology and Geophysics, School of Ocean and Earth Science and Technology; University of Hawaii at Manoa; Honolulu Hawaii USA
3. National Geophysical Observatory; Mengcheng China
4. Hawaii Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology; University of Hawaii at Manoa; Honolulu Hawaii USA
5. Department of Earth and Planetary Sciences; Northwestern University; Evanston Illinois USA