2003 NATH, Sankar Kumar (b. 1960) Ph.D.,F.N.A.E.,F.S.G.A.T., Professor & Former Head, Department of Geology & Geophysics, Indian Institute of Technology Kharagpur, Kharagpur – 721302; Res. Apartment No. A-102, Block 3, Gurukul Complex, IIT Kharagpur Campus, Kharagpur – 721302; Tel: (03222) 283374,220042(O),283375,277757(R),09434005953,09734634942(M); Fax: 220042, 282268, 255303; Email: ; Sp. Geotomography/Earthquake & Engineering and ExplorationSeismology/Mathematical Geophysics.