Siddhartha Kumar Lahiri is an associate professor and coordinator at the Department of Applied Geology in Dibrugarh University, Assam, India. He joined the ONGC as a Surface Geophysicist in 1985 to explore basin scale oil prospects in the Brahmaputra and Barak valleys of Assam. In 1993, he joined Dibrugarh University, India, as a faculty member and he was subsequently instrumental in developing the Applied Geophysics Program at the university. He earned his PhD from IIT Kanpur on basin evolution, morpho-tectonics and fluvial processes in the Brahmaputra River system. Presently, he is engaged with connecting surface processes with different scales of subsurface geophysics.