Laboratory of Seismology and Physics of the Earth’s Interior School of Earth and Space Sciences University of Science and Technology of China Hefei 230026 China;
Laboratory of Seismology and Physics of the Earth’s Interior School of Earth and Space Sciences University of Science and Technology of China Hefei 230026 ChinaMengcheng National Geophysical Observatory University of Science and Technology of China Mengcheng 233500 ChinaChinese Academy of Sciences Center for Excellence in Comparative Planetology University of Science and Technology of China Hefei 230026 China;
College of Oceanography Hohai University Nanjing 245700 China;
Rayleigh wave; ZH ratio; adjoint-wavefield method; 2-D sensitivity kernel; tomography;