1. School of Earth Sciences and EngineeringNanjing University Nanjing China
2. GeoForschungsZentrum Potsdam Potsdam Germany
3. SeismologyFreie Universität Berlin Berlin Germany
4. Departamento de Geofisica, Facultad de Ciencias Fisicas y MatematicasUniversidad de Chile Santiago Chile
5. Advanced Mining Technology Center, Facultad de Ciencias Fisicas y MatematicasUniversidad de Chile Santiago Chile
6. Department of GeophysicsTohoku University Sendai Japan