Sethunathasarma Krishnaswami

Sethunathasarma Krishnaswami (21 May 1945 – 20 July 2015), popularly known as Swami, was an Indian geochemist and an honorary scientist at the geosciences division of the Physical Research Laboratory.

He held various positions during his tenure at PRL such as that of a dean from 1987 to 1993 and acting director during 2004–05 and continued his association with the laboratory post-retirement as an Indian National Science Academy scientist and honorary professor.

[10] During his research collaborative study at Scripps Institution of Oceanography, Krishnaswami assisted Harmon Craig in his discovery of 210Pb-226Ra radioactive disequilibrium in the deep sea[4] and his association with K. K. Turekian at Yale University helped develop U-Th series nuclide applications in aquatic systems which has been detailed in a book, U-Th Series Nuclides in Aquatic Systems, co-edited by him and published by Elsevier Science in 2008.

[10] He was also involved in geochemical studies on the rivers of Ganges and Brahmaputra for assessing the evolution of strontium isotopes and uranium concentration in the ocean since the Cenozoic era.

[4] He was also associated with Geochimica et Cosmochimica Acta and Journal of Earth System Science as a member of their editorial boards and mentored 6 doctoral scholars in their studies.