Browsing Institute's contributions by Author "Agnihotri, R."
Now showing items 1-13 of 13
-
Is delta sup(15)N of sedimentary organic matter a good proxy for paleodenitrification in coastal waters of the eastern Arabian Sea?
Agnihotri, R.; Naqvi, S.W.A.; Kurian, S.; Altabet, M.A.; Bratton, J.F. (American Geophysical Union, 2009)Recently published sedimentary records of delta sup(15)N from several coastal areas affected by both natural and anthropogenically produced shallow hypoxia with the objective of testing this as a proxy for denitrification ... -
Marine nitrogen cycle of the world oceans and its climatic importance
Agnihotri, R. (National Inst. of Oceanography (CSIR); India, 2009) -
Measurement of C and N isotopes of geological samples using Delta V Plus Stable Isotope Ratio Mass Spectrometer via different preparatory systems
Karapurkar, S.; Methar, A.; Agnihotri, R. (National Inst. of Oceanography (CSIR); India, 2008)Stable isotope studies have proven their unique potential in unraveling several key biogeochemical processes occurring on solid earth as well as in world oceans. In addition, measurements of stable isotopes of lighter ... -
Possible solar control on primary production along the Indian west coast on decadal to centennial timescale
Kurian, S.; Agnihotri, R.; Borole, D.V.; Naqvi, S.W.A.; Ferreira, A.M.; Vale, C. (John Wiley, 2009)Using multiple geochemical proxies including specific biomarkers (dinosterol, phytol, stigmasterol and beta-sitosterol) measured in a high-sedimentation rate core collected from the inner shelf (depth approx. 45 m) off Goa ... -
Recently studied sedimentary records from the eastern Arabian Sea: Implications to Holocene monsoonal variability
Agnihotri, R.; Kurian, S. (The Society of Earth Scientists, 2008)Deep insight into exact mechanism(s) controlling past monsoonal variability on inter-annual to millennial time scales is a pre-requisite for developing predictive capability of monsoon on timescales relevant to human life. ... -
Seasonal anoxia over the western Indian continental shelf
Naqvi, S.W.A.; Naik, H.; Jayakumar, A.; Pratihary, A.K.; Shirodkar, G.; Kurian, S.; Agnihotri, R.; Shailaja, M.S.; Narvekar, P.V. (American Geophysical Union, 2009)The eastern Arabian Sea contains the only eastern-boundary-type upwelling environment in the entire Indian Ocean, albeit on a seasonal basis. During the southwest monsoon, when the surface current flows equatorward, upwelling ... -
Seasonally varying nitrogen isotope biogeochemistry of particulate organic matter in Lake Kinneret, Israel
Hadas, O.; Altabet, M.A.; Agnihotri, R. (American Society of Limnology and Oceanography, 2009)Large temporal variations in the nitrogen isotopic composition (delta sup(15) N) of particulate organic matter (POM) and dissolved inorganic nitrogen (DIN) species in Lake Kinneret occurred in response to seasonal phasing ... -
Stable carbon and nitrogen isotopic composition of bulk aerosols over India and northern Indian Ocean
Agnihotri, R.; Mandal, T.K.; Karapurkar, S.; Naja, M.; Gadi, R.; Ahammed, Y.N.; Kumar, A.; Saud, T.; Saxena, M. (Elsevier, 2011)Atmospheric carbonaceous aerosols of South Asian origin have received immense concerns in the Anthropocene owing to their plausible role in the observed regional to inter-continental scale climate anomalies. Tracking ... -
Temporal derivative of Total Solar Irradiance and anomalous Indian summer monsoon: An empirical evidence for a Sun–climate connection
Agnihotri, R.; Dutta, K.; Soon, W. (Elsevier, 2011)Identifying the pattern of natural climate variability is of immense importance to delineate the effects of anthropogenic climate changes. Global and regional climates are suspected to vary, in unison or with delays, with ... -
Time and causes of submergence of ancient temple structures off Mahabalipuram, East Coast of India
Gaur, A.S.; Sundaresh; Agnihotri, R.; Maurya, P.; Jayakumar, S.; Thorat, B.R. (NIScPR-CSIR, India, 2021)As per traditional belief, some part of the ancient town of Mahabalipuram had been submerged just off the shore temple and this story has been recorded by the several British travelers during the 18th - 19th century. During ... -
Variability of subsurface denitrification and surface productivity in the coastal eastern Arabian Sea over the past seven centuries
Agnihotri, R.; Kurian, S.; Fernandes, M.; Reshma, K.; DeSouza, W.; Naqvi, S.W.A. (SAGE, 2008)Temporal variations over the last approx. 700 years in surface productivity and subsurface denitrification in the coastal eastern Arabian Sea (off Goa, India), a hydrographically unique environment that experiences seasonal ... -
Variations in some environmental characteristics including C and N stable isotopic composition of suspended organic matter in the Mandovi estuary
Maya, M.V.; Soares, M.A.; Agnihotri, R.; Pratihary, A.K.; Karapurkar, S.; Naik, H.; Naqvi, S.W.A. (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 ... -
वैश्विक उष्णता व जलवायु परिर्वतन : अवलोकित तथ्य एवं अनुत्तरीत प्रश्न
Agnihotri, R.; Karapurkar, S. (National Institute of Oceanography (CSIR), India, 2010)