Browsing by Author "Shankar, D."
Now showing items 1-20 of 87
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Assessing the geographical distribution of carnivorous and planktivorous fishes in the western Bay of Bengal
Vijith, V.; Anil, A.C.; Shankar, D.; Antony, S.P. (Elsevier, 2023)There is a clear distinction in the feeding habits of fishes between the northeastern and southeastern Arabian Sea (west coast of India) � the north is carnivorous, and the south is planktivorous �, but such a distinction ... -
Seasonal cycle of zooplankton standing stock inferred from ADCP backscatter measurements in the eastern Arabian Sea
Aparna, S.G.; Desai, D.V.; Shankar, D.; Anil, A.C.; Dora, S.; Khedekar, R. (Elsevier, 2022)We use ADCP (acoustic Doppler current profiler) backscatter, measured during October 2012 to December 2020 at three locations on the continental slope in the eastern Arabian Sea (EAS), to study the seasonal variation in ... -
Possible zonal asymmetry of the Indian summer monsoon rainfall after ~5 ka BP as revealed by palaeo-salinity in the eastern Arabian Sea
Banakar, V.K.; Baidya, S.; Shankar, D.; Nanjundiah, R.S.; Jain, V. (Springer, 2022)Data from a high-resolution sediment core off Goa in the eastern Arabian Sea (EAS) show that the Holocene surface-salinity variation off Goa contains four alternating high- and low-salinity events.These events are in ... -
Variation of salinity in the Sundarbans estuarine system during the equinoctial spring tidal phase of march 2011
Chatterjee, Meenakshi; Shankar, D.; Vijith, V.; Sen, G.K.; Sundar, D.; Michael, G.S.; Amol, P.; Chatterjee, Abhisek; Sanyal, P.; Chatterjee, Siddhartha; Basu, Anwesha; Chakraborti, Saranya; Mishra, S.K.; Suprit, K.; Mukherjee, Debabrata; Mukherjee, A.; Mukhopadhyay, Soumya; Mondal, Gopal; Kalla, A.; Das, Madhumita (Springer, 2021)The Sundarbans Estuarine System (SES), comprising the southernmost part of the Indian portion of the Ganga-Brahmaputra delta bordering the Bay of Bengal, is India's largest monsoonal, macro-tidal, delta-front estuarine ... -
Observed variability of the West India Coastal Current on the continental shelf from 2010-2017
Chaudhuri, Anya; Amol, P.; Shankar, D.; Mukhopadhyay, S.; Aparna, S.G.; Fernando, V.; Kankonkar, A. (Springer, 2021)We describe the variability of the West India Coastal Current (WICC) during 2009-2017 using data from acoustic Doppler current profilers (ADCPs) attached to moorings deployed on the outer shelf at a water-column depth of ... -
Role of ocean dynamics in the evolution of mixed-layer temperature in the Bay of Bengal during the summer monsoon
Jain, V.; Shankar, D.; Vinayachandran, P.N.; Mukherjee, A.; Amol, P. (Elsevier, 2021)Earlier studies suggest that the mixed-layer (ML) temperature or sea surface temperature (SST) of the Bay of Bengal during the summer monsoon is determined primarily by air-sea fluxes. We use an oceanic general circulation ... -
High-resolution Operational Ocean Forecast and reanalysis System for the Indian Ocean
Francis, P.A.; Jithin, A.K.; Effy, J.B.; Chatterjee, Abhisek; Chakraborty, Kunal; Paul, A.; Balaji, B.; Shenoi, S.S.C.; Biswamoy, P.; Mukherjee, Arnab; Singh, Prerna; Deepsankar, B.; Reddy, S.S.; Vinayachandran, P.N.; GirishKumar, M.S.; Bhaskar, T.V.S.U.; Ravichandran, M.; Unnikrishnan, A.S.; Shankar, D.; Amol, P.; Aparna, S.G.; Harikumar, R.; Kaviyazhaku, K.; Suprit, K.; Shesu, R.V.; KiranKumar, N.; Rao, N.S.; Annapurnaiah, K.; Venkatesan, R.; Rao, A.S.; Rajagopal, E.N.; Prasad, V.S.; Gupta, M.D.; Nair, T.M.B.; Rao, E.P.R.; Satyanarayana, B.V. (American Meteorological Society, 2020)A good understanding of the general circulation features of the oceans, particularly of the coastal waters, and ability to predict the key oceanographic parameters with good accuracy and sufficient lead time are necessary ... -
Observed variability of the East India Coastal Current on the continental shelf during 2010-2018
Mukhopadhyay, S.; Shankar, D.; Aparna, S.G.; Fernando, V.; Kankonkar, A. (Springer, 2020)We describe the variability of the East India Coastal Current (EICC) during 2010-2018 on the outer continental shelf using data from four ADCP (acoustic Doppler current profilers) moorings deployed off Gopalpur (~ 19.5�N), ... -
Observed variability of the West India Coastal Current on the continental slope from 2009-2018
Chaudhuri, A.; Shankar, D.; Aparna, S.G.; Amol, P.; Fernando, V.; Kankonkar, A.; Michael, G.S.; Satelkar, N.P.; Khalap, S.T.; Tari, A.P.; Gaonkar, M.G.; Ghatkar, S.; Khedekar, R.R. (2020)We describe the variability of the West India Coastal Current (WICC) during October 2008 to October 2018 using data from ADCP (acoustic Doppler current profiler) moorings deployed on the continental slope off the west coast ... -
Maintenance of the southern Bay of Bengal cold pool
Vinayachandran, P.N.; Das, U.; Shankar, D.; Jahfer, S.; Behara, A.; Nair, T.M.B.; Bhat, G.S. (Elsevier, 2020)The region of relatively cooler water, sitting in the shadow zone of monsoon rainfall, around southern tip of India and around Sri Lanka, is known as the cold pool. A ship-board observations program to the east of Sri Lanka ... -
Modulation of chlorophyll concentration by downwelling Rossby waves during the winter monsoon in the southeastern Arabian Sea
Amol, P.; Bemal, S.; Shankar, D.; Jain, V.; Thushara, V.; Vijith, V.; Vinayachandran, P.N. (Elsevier Ltd, 2020)Signatures of Rossby waves that are evident in satellite ocean colour data in the southeastern Arabian Sea (SEAS) are more prominent during the winter than the summer monsoon. During the winter, the sea level is high, and ... -
Structure and dynamics of undercurrents in the western boundary current of the Bay of Bengal
Francis, P.A.; Jithin, A.K.; Chatterjee, Abhisek; Mukherjee, Arnab; Shankar, D.; Vinayachandran, P.N.; Ramakrishna, S.S.V.S. (Springer, 2020)The structure and variability of undercurrents in the East India Coastal Current (EICC), which is the western boundary current system in the Bay of Bengal (BoB), and the mechanisms of their formation are examined in this ... -
Effect of freshwater advection and winds on the vertical structure of chlorophyll in the northern Bay of Bengal
Amol, P.; Vinayachandran, P.N.; Shankar, D.; Thushara, V.; Vijith, V.; Chatterjee, A.; Kankonkar, A. (Elsevier, 2020)The northern Bay of Bengal receives a large amount of fresh water through river runoff and rainfall during the Indian summer monsoon (June-September). This fresh water spreads offshore and can modulate the upper-ocean ... -
Observed variability of the East India Coastal Current on the continental slope during 2009-2018
Mukhopadhyay, S.; Shankar, D.; Aparna, S.G.; Mukherjee, A.; Fernando, V.; Kankonkar, A.; Khalap, S.; Satelkar, N.P.; Gaonkar, M.G.; Tari, A.P.; Khedekar, R.R.; Ghatkar, S. (Springer, 2020)We describe the variability of the East India Coastal Current (EICC) during 2009-2018 using data from ADCP (acoustic Doppler current profiler) moorings deployed on the continental slope in the western Bay of Bengal. The ... -
Seasonal variability of sea-surface temperature fronts associated with large marine ecosystems in the north Indian Ocean
Sarkar, K.; Aparna, S.G.; Dora, S.; Shankar, D. (Springer India, 2019)We use 14 years of satellite-derived sea-surface temperature (SST) data to compute a monthly frontal probability index (FPI) to determine the existence of a front in a pixel. A persistent SST front is deemed to exist if ... -
Shallow convective mixing promotes massive Noctiluca scintillans bloom in the northeastern Arabian Sea
Sarma, V.V.S.S.; Patil, J.S.; Shankar, D.; Anil, A.C. (Elsevier, 2019)The northeastern Arabian Sea (NEAS) experiences convective mixing during winter, but this mixing does not reach up to the silicicline, resulting in the limited supply of silicate (Si) compared to nitrate (N) and phosphate ... -
Influence of Rainfall Over Eastern Arabian Sea on Its Salinity
Behara, A.; Vinayachandran, P.N.; Shankar, D. (2019)The west coast of India and the adjoining eastern Arabian Sea (EAS) is one of the high rainfall zones of Indian summer monsoon. The summer monsoon rainfall in this region is about 1,036 km3, which is comparable to the ... -
Role of physical processes in determining the nature of fisheries in the eastern Arabian Sea
Shankar, D.; Remya, R.; Anil, A.C.; Vijith, V. (Elsevier, 2019)We use available data and model simulations to make a case for physical forcing of the spatial variation in the nature of fisheries off the west coast of India in the eastern Arabian Sea (EAS). The approach is heuristic, ... -
Numerical simulation of the observed near-surface East India Coastal Current on the continental slope
Mukherjee, A.; Shankar, D.; Chatterjee, A.; Vinayachandran, P.N. (Springer Berlin Heidelberg, 2018)We simulate the East India Coastal Current (EICC) using two numerical models (resolution� 0.1-�0.1-),� an oceanic general circulation model (OGCM) called Modular Ocean Model and a simpler, linear, continuously stratified ... -
Ecosystem response in temperature fronts in the northeastern Arabian Sea
Sarma, V.V.S.S.; Desai, D.V.; Patil, J.S.; Khandeparker, L.; Aparna, S.G.; Shankar, D.; DeSouza, S.; Dalabehera, H.B.; Mukherjee, J.; Sudharani, P.; Anil, A.C. (Elsevier, 2018)Productivity is low in tropical waters outside the traditional upwelling regimes, making temperature fronts a potential marker of fish. To test the hypothesis that all temperature fronts harbour high concentrations of ...