DRS at CSIR-National Institute of Oceanography: Recent submissions
Now showing items 6761-6780 of 9429
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Thermohaline structure and circulation in the upper layers of the southern Bay of Bengal during BOBMEX-Pilot (October-November 1998)
(Indian Academy of Sciences, 2000)Hydrographic data collected on board ORV Sagar Kanya in the southern Bay of Bengal during the BOBMEX-Pilot programme (October -- November 1998) have been used to describe the thermohaline structure and circulation in the ... -
Glacial-interglacial changes in the surface water characteristics of the Andaman Sea: Evidence from stable isotopic ratios of planktonic foraminifera
(Indian Academy of Sciences, 2000)Stable carbon and oxygen isotopic analyses of the planktonic foraminifera (Globigerinoides ruber) from a deep sea sediment core (GC-1) in the Andaman Sea show high glacial-to-Holocene d<sup>18</sup>O amplitude of 2.1% which ... -
Observations of trace gases and aerosols over the Indian Ocean during the monsoon transition period
(Indian Academy of Sciences, 2006)Characteristics of trace gases (O sub(3), CO, CO sub(2), CH sub(4) and N sub(2)O) and aerosols (particle size of 2.5 micron) were studied over the Arabian Sea, equatorial Indian Ocean and southwest part of the Bay of Bengal ... -
Guest editor - Material exchanges at marine boundaries and surface ocean processes: Forcings and feedbacks
(Indian Academy of Sciences, 2006) -
Coccolithophores from the central Arabian Sea: Sediment trap results
(Indian Academy of Sciences, 2006)Sediment trap samples collected from a depth of 1018m in the Central Arabian Sea Trap (CAST) at 14 degrees 28.2 minutes N, 64 degrees 35.8 minutes E were analyzed for temporal variation of coccolithophore fluxes from October ... -
Tides in the Mandovi and Zuari estuaries, Goa, west coast of India
(Indian Academy of Sciences, 2005)Mandovi and Zuari are two estuaries located in Goa, west coast of India. Variation of water level in the estuaries was monitored for a month at 13 locations using tide-poles during March–April 2003. Analysis of this data ... -
Palaeoceanographic implications of abundance and mean proloculus diameter of benthic foraminiferal species Epistominella exigua in sub-surface sediments from distal Bay of Bengal fan
(Indian Academy of Sciences, 2005)Temporal variation in abundance and mean proloculus diameter of the benthic foraminiferal species Epistominella exigua has been reconstructed over the last approx. 50,000 yr BP, from a core collected from the distal Bay ... -
Spatial distribution of meteorological parameters around 900 hPa level over the Arabian Sea and Indian Ocean regions during the IFP-99 of the INDOEX programme as revealed from the constant altitude balloon experiments conducted from Goa
(Indian Academy of Sciences, 2001)During the IFP-99 of the INDOEX programme, an Indo-French joint scientific team conducted 17 constant balloon flights from Goa (India) mainly to study the various features features of the continental air mass flow from the ... -
Coastal processes along the Indian coastline
(Indian Academy of Sciences, 2006)Based on the measured data, wave height and current speed at a few locations are presented along with the estimated sediment transport rates. The maximum significant wave height recorded during the passage of cyclone along ... -
Long-range forecast of monthly rainfall over India during summer monsoon season using SST in the north Indian Ocean
(Indian Academy of Sciences, 2006)Long-range forecasting of summer monsoon rainfall was reported through linear models by Delsole and Shukla3. They showed that minimum number of predictors are sufficient for accurate forecasts. Recent studies4,5 reported ... -
Occurrence of large fractions of mercury-resistant bacteria in the Bay of Bengal
(Indian Academy of Sciences, 2006)As insights from tolerance responses of native microflora are useful in deciphering their involvement in biogeochemical cycling of heavy metals, we enumerated mercury resistant bacteria (MRB) using sea water nutrient agar ... -
Evidences of methane-derived authigenic carbonates from the sediments of the Krishna–Godavari Basin, eastern continental margin of India
(Indian Academy of Sciences, 2006)Evidences of anaerobic oxidation of methane and interstitial carbonate precipitation have been recorded in sediment cores from Krishna–Godavari basin, Andhra Pradesh, India. High magnesian calcite and aragonite, typically ... -
Gas hydrate-related proxies inferred from multidisciplinary investigations in the India offshoe areas
(Indian Academy of Sciences, 2006)The presence of gas hydrates along the Indian continental margins has been speculated by earlier workers based on the identification of Bottom Simulating Reflection (BSR) on the multichannel seismic reflection records and ... -
Do gas seepage sites support distinct macrofaunal community ? - An observation in the tropical shelf region of Goa, Arabian Sea, India
(Indian Academy of Sciences, 2006)The macrofaunal community in the shelf region (depth 15–50 m) of Goa, Arabian Sea, India, at seven sites in the gas seep and seven sites in non-seep areas during March 2005 is examined. A total of 56 species were recorded, ... -
Some enigmatic aspects of the marine cyanobacterial genus, Trichodesmium
(Indian Academy of Sciences, 2006)Trichodesmium, an important nitrogen fixing marine genus has some coupled features that appear contrasting, either in their operational requirements or ecological dominance e.g. N2 fixation and photosynthesis take place ... -
Long-chain alkaenone unsaturation index as sea surface temperature proxy in southwest Bay of Bengal
(Indian Academy of Sciences, 2006)As a proxy of the sea surface temperature (SST), C sub(37) long-chain alkenones (LCAs) preserved in sediments of the southwestern Bay of Bengal and dating back to the last glacial period, were identified in SIM GC-EI MS ... -
Reply: Is Kappaphycus alvarezii heading towards marine bioinvasion ?
(Indian Academy of Sciences, 2006) -
Post-disaster reflections
(Indian Academy of Sciences, 2005) -
Need for reassessment in the post-tsunami scenario
(Indian Academy of Sciences, 2005)Tamil Nadu (India), in particular Nagapattinam, experienced major wrath of recent Tsunami. In view of this, it is of paramount importance to carry out geophysical studies over coastal and shelf regions to analyze any ... -
Three-phase tectonic evolution of the Andaman backarc basin
(Indian Academy of Sciences, 2005)A three-phase evolutionary scheme since Late Oligocene for the Andaman backarc basin is proposed based on the multibeam swath bathymetry, magnetic and seismological data. A SW–NE trending spreading ridge bisects the basin. ...