1. Department of Earth and Atmospheric Sciences, NIT Rourkela, Rourkela, Odisha-769008, India
2. Institute of Seismological Research, Gandhinagar, Gujarat-328009, India
3. Department of Earth and Planetary Science and Berkeley Seismological Laboratory, University of California, Berkeley, CA , 97720-4767, USA
4. CSIR-National Geophysical Research Institute, Hyderabad, Telangana-500007, India