Large Lakes Observatory at the University of Minnesota - Duluth
Home > People > Koushik Dutta

Koushik Dutta

Research Associate & Stable Isotope Biogeochemistry Lab Manager

Large Lakes Observatory
University of Minnesota Duluth
2205 E. 5th St.,
Research Laboratory Building 214
Duluth, MN 55812

Tel. (218) 726-6055 (office)/6770 (lab)

Fax: (218) 726-6979

email: kdutta at d.umn.edu

Websites:
http://www.d.umn.edu/~kdutta
http://www.researcherid.com/rid/F-9371-2010


RESEARCH INTERESTS

  • Applications of radiocarbon in global carbon cycle, oceanography, palaeoclimate and archaeology
  • Sun-climate relationship, and multi-decadal climate variability in the tropics
  • Stable isotope and organic biogeochemistry applied to limnology
  • Carbon cycle and biogeochemistry in permafrost ecosystems
  • Past variations in South Asian monsoon
  • Marine geochemistry of 10Be and 87Sr


EDUCATION

Physical Research Laboratory, Ahmedabad, India, Ph.D. (Chemical Oceanography, Geochemistry)
Indian Institute of Technology, Kharagpur, India, M.Sc. (Applied Geology)
Banaras Hindu University, Varanasi, B.Sc. (Honors in Geology)


SELECTED PUBLICATIONS

Chakraborty S, Goswami BN, Dutta K (2011) Pacific coral oxygen isotope and the tropospheric temperature gradient over Asian monsoon region: a tool to reconstruct past Indian summer monsoon rainfall. Journal of Quaternary Science, (in press).

Dahanayake K, Kulasena N, Ravi Prasad GV, Dutta K, Ray DK (2011) Sedimentological and 14C dating studies of past tsunami events in southern Sri Lanka. Natural Hazards, doi:10.1007/s11069-011-9824-6 (in press).

Soon W, Dutta K, Legates DR, Velasco V, WeiJia Z (2011) Variation in surface air temeperature of China during the 20th century. Journal of Atmospheric and Solar-Terrestrial Physics, 73(16), 2331-2334, doi: 10.1016/j.jastp.2011.07.007.

Agnihotri R, Dutta K, Soon W (2011) Temporal derivative of total solar irradiance and anomalous Indian summer monsoon. Journal of Atmospheric and Solar-Terrestrial Physics, 73(13), 1980-1987, doi:10.1016/j.jastp.2011.06.006.

Dutta K, Ravi Prasad GV, Ray DK, Raghav S (2010) Decadal changes of radiocarbon in the surface Bay of Bengal: Three decades after GEOSECS and one decade after WOCE. Radiocarbon, 52(3), 1191-1196.

Reddy DV, Nagabhushanam P, Kumar D, Sukhija BS, Thomas PJ, Pandey AK, Sahoo RN, Ravi Prasad GV, Dutta K (2009). The great 1950 Assam earthquake revisited: Field evidences of liquefaction and search for paleoseismic events. Tectonophysics, 474, 463-472.

Dutta K (2008) Marine 14C reservoir ages and Suess effect in the Indian Ocean. Earth Science India, 1(IV), 243-257.

Bhushan R, Dutta K, Somayajulu BLK (2008) Estimates of upwelling rates in the Arabian Sea and the equatorial Indian Ocean based on bomb radiocarbon. Journal of Environmental Radioactivity, 99, 1566-1571, doi:10.1016/j.jenvrad.2007.12.006.

Ravi Prasad GV, Dutta K, Ray DK (2008) Radiocarbon AMS at IOP: system improvements and dating of groundwater from Bhadrak district, Orissa. Nuclear Instruments and Methods in Physics Research B, 266(8), 1833-1836, doi:10.1016/j.nimb.2007.11.060.

Rajendran K, Rajendran CP, Earnest A, Ravi Prasad GV, Dutta K, Ray DK, Anu R, Jeyabaskaran R (2008) Age estimates of coastal terraces in the Andaman and Nicobar Islands and their tectonic implications. Tectonophysics, 455(1-4), 53-60, doi:10.1016/j.tecto.2008.05.004.

Chakraborty S, Dutta K, Bhattacharyya A, Nigam M, Schuur EAG, Shah SK (2008). Atmospheric 14C variability recorded in tree rings from peninsular India: Implications for fossil fuel CO2 emission and atmospheric transport. Radiocarbon, 50(3), 321-330.

Dutta K, Bhushan R, Somayajulu BLK (2007) Rapid vertical mixing rates in deep waters of the Andaman Basin. Science of Total Environment, 384(1-3), 401-408, doi:10.1016/j.scitotenv.2007.04.041.

Dutta K , Schuur EAG, Neff JC, Zimov SE (2006) Potential carbon release from permafrost soils of Northeastern Siberia. Global Change Biology, 12(12), 2336-2351, doi:10.1111/j.1365-2486.2006.01259.x.

Zimov SA, Davydov SP, Zimova GM, Davydova AI, Schuur EAG, Dutta K, Chapin III FS (2006) Permafrost carbon: Stock and decomposability of a globally significant carbon pool. Geophysical Research Letters, 33, L20502, doi:10.1029/2006GL027484.

Dutta K, Bhushan R, Somayajulu BLK, Rastogi N (2006) Interannual variation in atmospheric Δ14C over the Northern Indian Ocean. Atmospheric Environment, 40, 4501-4512, doi:10.1016/j.atmosenv.2006.04.013.

Kane ES, Valentine DW, Schuur EAG, Dutta K (2005) Soil carbon stabilization along climate and stand productivity gradients in black spruce forests of interior Alaska. Canadian Journal of Forest Research, 35, 2118-2129.

Bhushan R, Dutta K, Mulsow S, Povinec PP, Somayajulu BLK (2003) Distribution of natural and man-made radionuclides during reoccupation of GEOSECS stations 413 and 416 in the Arabian Sea: Temporal changes. Deep Sea Research-II, 50, 2777-2784, doi:10.1016/S0967-0645(03)00147-4.

Agnihotri R, Dutta K (2003) Centennial scale variations in monsoonal rainfall (Indian, east equatorial and Chinese monsoons): Manifestations of solar variability. Current Science, 85, 459-463.

Dutta K (2002) Coherence of tropospheric 14CO2 with El Niño/Southern Oscillation. Geophysical Research Letters, 29(20), 48(1-4), doi:10.1029/2002GL014753

Agnihotri R, Dutta K, Bhushan R, Somayajulu BLK (2002) Evidence for solar forcing of the southwest monsoon during the last millennium. Earth and Planetary Science Letters, 198, 521-527, doi:10.1016/S0012-821X(02)00530-7.

Dutta K, Bhushan R, Somayajulu BLK (2001) Δ-R correction values for the Northern Indian Ocean. Radiocarbon, 43(2a), 483-488.

Bhushan R, Dutta K, Somayajulu BLK (2001) Concentrations and burial fluxes of organic and inorganic carbon on the eastern margins of the Arabian Sea. Marine Geology, 178, 95-113, doi:10.1016/S0025-3227(01)00179-7.

OTHER PUBLICATIONS

Agrawal S, Sanyal P, Sarkar A, Jaiswal M, Dutta K, (2011) Variability of Indian monsoonal rainfall over the past 100 ka and its implication vegetational change. Quaternary Research, doi: 10.1016/j.yqres.2011.09.003 (in press).

Babu CP, Pattan JN, Dutta K, Basavaiah N, Ravi Prasad GV, Ray DK, Govil P (2010) Shift in detrital sedimentation in the eastern Bay of Bengal during the late Quaternary. Journal of Earth System Science, 119(3), 285-295, doi:10.1007/s12040-010-0022-9.

Rautray T, Dutta K, Das SL, Rautray AC (2010) In situ analyses of gallstone inner layers by external PIXE. Nuclear Instruments and Methods in Physics Research B, 268, 2773-2776, doi:10.1016/j.nimb.2010.06.008.

Kanungo AK, Misra VN, Dutta K, Ravi Prasad GV, Yadava MG, Hodgins GWL (2009) The radiocarbon chronology of Kopia, an early glass manufacturing centre in India. Archaeometry, 52(5), 899-918, doi:10.1111/j.1475-4754.2009.00497.x.

Mahapatra DP, Behera AK, Gopalan K, Chakraborty S, Dutta K, Somayajulu BLK (2004) AMS at the Institute of Physics, Bhubaneswar. Nuclear Instruments and Methods in Physics Research B, 223-224, 26-30, doi:10.1016/j.nimb.2004.04.009.