Browsing by Subject "nitrogen isotopes"
Now showing items 1-12 of 12
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Distribution and sources of organic matter in surface sediments of the eastern continental margin of India
(American Geophysical Union, 2013)The sources and distribution of organic matter (OM) in surface sediments of the eastern continental margin of India, including the region influenced by river discharge, were investigated using content, molar C:N ratios and ... -
High new production in the Bay of Bengal: Possible causes and implications
(American Geophysical Union, 2004)The first measurements of new production (sup(15) N tracer technique), the component of primary production that sustains on extraneous nutrient inputs to the euphotic zone, in the Bay of Bengal is reported. Experiments ... -
Intra-annual variability of carbon and nitrogen stable isotopes in suspended organic matter in waters of the western continental shelf of India
(The European Geosciences Union, 2011)Intra-annual variations of delta sup(13)C and delta sup(15)N of watercolumn suspended particulate organic matter (SPOM) have been investigated to understand the biogeochemical cycling of C and N in the Western Continental ... -
Monsoon related changes in sea surface productivity and water column denitrification in the Eastern Arabian Sea during the last glacial cycle
(Elsevier, 2005)Sea surface salinity reconstruction for the Holocene and the Last Glacial Maximum (LGM) suggests that the LGM-Eastern Arabian Sea was more saline (by approx.5 psu) than the Holocene due to weakened freshwater flux to the ... -
Natural isotopic composition of nitrogen in suspended particulate matter in the Bay of Bengal
(The European Geosciences Union, 2004)The first measurements of nitrogen isotopic composition (delta sup(15) N) in suspended particulate matter (SPM) of the surface Bay of Bengal (BOB) at 24 different locations during pre- (April-May 2003) and post- ... -
Nitrogen and oxygen isotopic composition of N sub(2)O from suboxic waters of the eastern tropical North Pacific and the Arabian Sea - measurement by continuous-flow isotope-ratio monitoring
(Elsevier, 1997)Nitrous oxide (N sub(2)O) is a trace gas that is increasing in the atmosphere. It contributes to the greenhouse effect and influence the global ozone distribution. Recent reports suggest that regions such as the Arabian ... -
Nitrogen cycling in the suboxic waters of the Arabian Sea
(Springer, 2006)Arabian Sea contains one of the world's three large oxygen deficient zones (ODZ). Within the ODZ oxygen concentration is vanishingly small between about 200 and 800 m depth and in this depth interval denitrifications is ... -
Nitrogen isotopic studies in the suboxic Arabian Sea
(Indian Academy of Sciences, Bangalore, India, 1998)Measurements of sup(15)N/ sup(14)N in dissolved molecular nitrogen (N sub(2)), nitrate (NO sub(3) sup(-)) and nitrous oxide (N sub(2)O) and sup(18)O/ sup(16)O in N sub(2)O [expressed as delta sup(15)N and delta sup(18)O, ... -
Sources and fate of organic matter in suspended and bottom sediments of the Mandovi and Zuari estuaries, Western India
(Current Science Association, 2015)Organic carbon (OC), total nitrogen (TN) and stable carbon and nitrogen isotopic compositions were measured in suspended particulate matter (SPM) and surface sediment along estuaries of Mandovi and Zuari rivers, two small ... -
Stable isotopes of carbon and nitrogen in suspended matter and sediments from the Godavari estuary
(Springer, 2012)Spatial distribution of the carbon and nitrogen content and their isotopic enrichment in suspended matter and sediments were measured in the Godavari estuary to identify the sources and transformation mechanism of organic ... -
Stable nitrogen isotopic ratios of sinking particles and sediments from the northern Indian Ocean
(Elsevier, 2005)Delta sup(15)N values in modern sediments of the northern Indian Ocean range from less than 4 ppt in the northern Bay of Bengal to greater than 11 ppt in the central Arabian Sea due to the strong spatial variability of ... -
Variations in some environmental characteristics including C and N stable isotopic composition of suspended organic matter in the Mandovi estuary
(Springer, 2011)Chemical and isotopic (delta sup(13)C and delta sup(15)N) investigation of the Mandovi estuary along the Indian west coast affected strongly by the seasonal monsoon cycle was carried out. The Mandovi estuary is a major ...