J R KayalProfessor J. R. Kayal did his M Sc (Applied Geophysics) from the Indian School of Mines, Dhanbad and PhD from the Victoria University of Wellington, New Zealand. He retired as Deputy Director GeneralGSI. He has been an Adjunct Professor at the IIT, Karagpur, IIT-ISM, Dhanbad, Tezpur University, Assam, an Emeritus Professor at the Jadavpur University, Kolkata, and Visiting Professor at the University of Tokyo, Japan, and Strasbourg University, France. Presently, he is an Adjunct Professor, ISR, Gandhinagar and the NIT, Agartala. He led several international research projects sponsored by the Department of Science & Technology (DST), Government of India, and was a guest faculty to the UNESCO (France) and ICTP (Italy). He is author of more than 130 peered reviewed research papers in national and international journals and authored one book. Read More Read Less