Browsing Institute's contributions by Subject "upwelling"
Now showing items 41-60 of 78
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Mining of phosphorite resources from the Indian continental shelf will help food production
(Books & Journals Private Ltd., 1983)Phosphate is used as a plant nutrient in fertilisers The main sources of phosphate are phosphatic rocks The National Institute of Oceanography had conducted a phosphate exploration programme on the continental shelf of ... -
Monsoonal variability in abiotic parameters in coastal waters off Trivandrum evokes press and pulse response in biotic variables
(Centre for Ocean and Environmental Studies, New Delhi, 2012)Trivandrum Coast experiences coastal upwelling during south west monsoon, which is accompanied by abiotic changes in physio-chemical parameters. The resultant biotic responses could range from an instantaneous pulse to a ... -
Monthly mean wind stress along the coast of the north Indian Ocean
(Indian Academy of Sciences, Bangalore, 1985)Monthly-mean wind stress and its longshore and offshore components have been computed using the bulk aerodynamic method for each of a string of 36 two-degree-latitude by two-degree-longitude squares along the coast of the ... -
Natural and human-induced hypoxia and consequences for coastal areas: Synthesis and future development
(European Geosciences Union, 2010)Hypoxia has become a world-wide phenomenon in the global coastal ocean and causes a deterioration of the structure and function of ecosystems. Based on the collective contributions of members of SCOR Working Group 128, the ... -
Nitrate reducing activity pervades surface waters during upwelling.
(Elsevier, 2014)Nitrate reducing activity (NRA) is known to be mediated by microaerophilic to anaerobic bacteria and generally occurs in the sub-surface waters. However, we hypothesize that NRA could become prominent in the surface waters ... -
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 ... -
Nutrient biogeochemistry of the eastern Arabian Sea during the southwest monsoon retreat
(Springer, 2013)Hydrography of the eastern Arabian Sea and associated chemical and biological responses were studied during the withdrawal phase of summer monsoon 2003. The shelf region off the southwest coast of India (10 degrees N-15 ... -
Observed anomalous upwelling in the Lakshadweep Sea during the summer monsoon season of 2005
(American Geophysical Union, 2008)Repeat near-fortnightly expendable bathythermograph (XBT) transects made along Kochi-Kavaratti (KK) shipping lane in the Lakshadweep Sea (LS) during 2002–2006 are examined to describe the observed year-to-year variability ... -
Observed interannual variability of the thermohaline structure in the south eastern Arabian Sea
(Springer, 2011)The XBT and sea surface salinity (SSS) measurements systematically carried out at near-fortnightly interval from May 2002 to August 2008 in the South Eastern Arabian Sea (SEAS) are utilised to describe the observed seasonal ... -
Occurrence of Neogloboquadrina pachyderma new subspecies in the shelf-slope sediments of northern Indian Ocean
(CSIR-NISCAIR, 1977)Specimens of @iNeogloboquadrina pachyderma@@ (Ehrenberg) which are considered to be typical bipolar, coolerwater species, are described in the recent shelf-slope sediments of the northern Indian Ocean as far north as 23~'N ... -
Offshore limit of coastal ocean variability identified from hydrography and altimeter data in the eastern Arabian Sea
(Pergamon, 2002)In this communication, we describe a hitherto-unknown offshore limit to the coastal ocean variability signatures away from the continental shelf in the eastern Arabian Sea, based on hydrographic observations and satellite ... -
On the accuracy of the simple ocean data assimilation analysis for estimating heat Budgets of the Near-Surface Arabian Sea and Bay of Bengal
(American Meteorological Society, 2005)The accuracy of data from the Simple Ocean Data Assimilation (SODA) model for estimating the heat budget of the upper ocean is tested in the Arabian Sea and the Bay of Bengal. SODA is able to reproduce the changes in heat ... -
On the dynamics of the Lakshadweep high and low in the southeastern Arabian Sea
(American Geophysical Union, 1997)Hydrography and altimetry show that a "high" in surface topography forms off southwest India in January (midnortheast monsoon) and that a "low" forms during the southwest monsoon; the high and low, called Lakshadweep high ... -
On the possible causes of the seasonal phytoplankton blooms along the southwest coast of India
(NISCAIR, CSIR, 1996)Data collected off the southwest coast of India at the onset of the 1987 southwest monsoon season suggest that the commonly observed high concentrations of chlorophyll and rates of photosynthesis of the season may not be ... -
On the vergence field in the north Indian Ocean
(Council of Scientific & Industrial Research., 1964)The paper presents some of the results of investigation on the divergence and convergence of the surface waters in the North Indian Ocean, for different months of the year. The divergence is computed by a graphical method ... -
Organic carbon and humic acids in sediments of the Arabian Sea and factors governing their distribution
(Elsevier, 1994)Organic carbon and humic acids in the sediments of the Arabian Sea show distinct regional variations to the south and north of 15~'N latitude. Significant variations are also observed from the shelf to the slope regions. ... -
Primary productivity
(Oxford and IBH, New Delhi, 2001)Photosynthetic production in the oceans in relation to light, nutrients and mixing processes is discussed. Primary productivity in the estuarine region is reported to be high in comparison to coastal and oceanic waters. ... -
Processes of 30–90 days sea surface temperature variability in the northern Indian Ocean during boreal summer
(Springer-Verlag, 2012)During summer, the northern Indian Ocean exhibits significant atmospheric intraseasonal variability associated with active and break phases of the monsoon in the 30–90 days band. In this paper, we investigate mechanisms ... -
Rapid climatic shifts and its influence on ancient civilisations: Evidence from marine records
(Universities Press, Hyderabad, India, 1998)The southwest (SW) monsoon system in the Arabian Sea exerts a strong influence upon the climatic conditions in South and Southeast Asia and the associated monsoon rainfall has a great impact on the socio-economic and ... -
Sea surface temperature changes during May and August in the western Arabian Sea over the last 22 kyr: Implications as to shifting of the upwelling season
(Elsevier, 2011)In the western Arabian Sea (WAS), the highest seasonal sea surface temperature (SST) difference presently occurs between May and August. In order to gain an understanding on how monsoonal upwelling modulates the SST ...