Browsing Institute's contributions by Author "Chakraborty, S."
Now showing items 1-16 of 16
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Carbon dioxide observations at Cape Rama, India for the period 1993–2002: implications for constraining Indian emissions
Tiwari, Y.K.; Patra, P.K.; Chevallier, F.; Francey, R.J.; Krummel, P.B.; Allison, C.E.; Revadekar, J.V.; Chakraborty, S.; Langenfelds, R.L.; Bhattacharya, S.K.; Borole, D.V.; RaviKumar, K.; Steele, L.P. (Current Science Association, 2011)India has the second largest population, one of fastest growing economies and is ranked third in greenhouse gas emissions by fossil-fuel burning in the world. However, there has been little monitoring of atmospheric CO ... -
Changes in metal contamination levels in estuarine sediments around India – An assessment
Chakraborty, P.; Ramteke, D.; Chakraborty, S.; Nath, B.N. (Elsevier, 2014)This review is the first attempt to comprehend the changes in metal contamination levels in surface estuarine sediments with changing time around India. Contamination factor, geoaccumulation index, pollution load index, ... -
Changing sedimentary environment during the late Quaternary: Sedimentological and isotopic evidence from the distal Bengal Fan
Kessarkar, P.M.; Rao, V.P.; Ahmad, S.M.; Patil, S.K.; AnilKumar, A.; AnilBabu, G.; Chakraborty, S.; SounderRajan, R. (Elsevier, 2005)The sediments recovered from two gravity cores of the lower and distal Bengal Fan were investigated for sedimentological properties and Sr -Nd isotopes.Each core exhibits two distinct units, the lower unit 2 and upper unit ... -
Chromium speciation in the sediments across the oxygen minimum zone, western continental margin of India
Chakraborty, P.; Jayachandran, S.; Chakraborty, S. (2019)This study suggests that varying concentration of dissolved oxygen of overlying bottom water influences geochemical fractionation, speciation, and oxidation state of sedimentary Cr in a marine system. The nature of sedimentary ... -
Distribution and geochemical fractionation of lead in the continental shelf sediments around India
Chakraborty, S.; Chakraborty, P.; Sarkar, Arindam; Kazip, A.; Mascarenhas-Pereira, M.B.L.; Nath, B.N. (2019)This study provides the first, preliminary data on geochemical distribution and fractionation of Pb (a toxic heavy metal) in continental shelf sediments around India and identifies the factors that control geochemical ... -
Effect of pH on transport and transformation of Cu-sediment complexes in mangrove systems
Jayachandran, S.; Chakraborty, P.; Ramteke, D.; Chennuri, K.; Chakraborty, S. (Elsevier, 2018)Impact of pH variation of overlying water column on transport and transformation of Cu-sediment complexes in the bottom mangrove sediments was investigated by using different metal extraction studies. The total Cu concentration ... -
Effects of bottom water dissolved oxygen variability on copper and lead fractionation in the sediments across the oxygen minimum zone, western continental margin of India
Chakraborty, P.; Chakraborty, S.; Jayachandran, S.; Madan, R.; Sarkar, Arindam; Linsy, P.; Nath, B.N. (Elsevier, 2016)This study describes the effect of varying bottom-water oxygen concentration on geochemical fractionation (operational speciation) of Cu and Pb in the underneath sediments across the oxygen minimum zone (Arabian Sea) in ... -
Effects of bottom water oxygen concentrations on mercury distribution and speciation in sediments below the oxygen minimum zone of the Arabian Sea
Chakraborty, P.; Mason, R.P.; Jayachandran, S.; Vudamala, K.; Armoury, K.; Sarkar, Arindam; Chakraborty, S.; Bardhan, P.; Naik, R. (Elsevier, 2016)This study investigated the influences of varying dissolved oxygen (DO) levels in overlying bottom water, sediment grain size, total sedimentary organic carbon (C<sub>org</sub>), and total sedimentary sulfide concentrations ... -
Geochemical partitioning of Cu and Ni in mangrove sediments: Relationships with their bioavailability
Chakraborty, P.; Ramteke, D.; Chakraborty, S. (Elsevier, 2015)Sequential extraction study was performed to determine the concentrations of non-residual metal-complexes in the mangrove sediments from the Divar Island, (west coast of India). Accumulation of metal in the mangrove roots ... -
Kinetic and equilibrium based fractionation study of Pb in continental shelf sediment of India
Chakraborty, S.; Chakraborty, P.; Sarkar, Arindam; Nath, B.N. (Elsevier, 2017)Two independent analytical methods (kinetic and sequential extraction protocols) were used to understand the distribution, stability, and lability of Pb-sediment complexes in Indian continental shelf. The concentrations ... -
Kinetic speciation and bioavailability of copper and nickel in mangrove sediments
Chakraborty, P.; Chakraborty, S.; Ramteke, D.; Chennuri, K. (Elsevier, 2014)An attempt was made to establish a mechanistic linkage between chemical speciation of copper and nickel, and their bioavailability in mangrove ecosystem. Kinetic speciation study was performed to determine the concentrations ... -
Lead distribution in coastal and estuarine sediments around India
Chakraborty, S.; Chakraborty, P.; Nath, B.N. (Elsevier, 2015)This study describes the geochemical distribution of lead (Pb) and identifies the critical factors that significantly control Pb distribution and speciation in coastal and estuarine sediments around India by using published ... -
Partitioning of metals in different binding phases of tropical estuarine sediments: importance of metal chemistry
Chakraborty, P.; Chakraborty, S.; Vudamala, K.; Sarkar, Arindam; Nath, B.N. (Springer, 2016)Distribution of metals in different binding phases of estuarine sediments provides chemically significant description of metal–sediment interactions. This study describes the influences of ligand field stabilization energy ... -
Relationship between the lability of sediment-bound Cd and its bioaccumulation in edible oyster
Chakraborty, P.; Ramteke, D.; Chakraborty, S.; Chennuri, K.; Bardhan, P. (Elsevier, 2015)A linkage between Cd speciation in sediments and its bioaccumulation in edible oyster (Crassostrea sp.) from a tropical estuarine system was established. Bioaccumulation of Cd in edible oyster increased with the increasing ... -
Relationship between the lability of sediment-bound Cd and its bioaccumulation in edible oyster.
Chakraborty, P.; Ramteke, D.; Chakraborty, S.; Chennuri, K.; Bardhan, P. (Elsevier, 2015)A linkage between Cd speciation in sediments and its bioaccumulation in edible oyster (Crassostrea sp.) from a tropical estuarine system was established. Bioaccumulation of Cd in edible oyster increased with the increasing ... -
Sea-Level Rise
Swapna, P.; Ravichandran, M.; Nidheesh, G.; Jyoti, J.; Sandeep, N.; Deepa, J.S.; Unnikrishnan, A.S. (Springer , Singapore, 2020)Key Messages: There is high confidence that the rate of global mean sea level (GMSL) rise has increased. Human-caused climate change has made a substantial contribution to the rise since 1900. The GMSL has risen by 1.7 ...