DRS at CSIR-National Institute of Oceanography: Recent submissions
Now showing items 5401-5420 of 9443
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Magnetic and bathymetric investigations over the Vema Region of the Central Indian Ridge: Tectonic implications
(Elsevier, 2000)Magnetic and bathymetric data were collected along N50 degrees E profiles in the Vema Region (7-12 degrees S, 64-70 degrees E) across five ridge segments of the Central Indian Ridge (CIR). Anomalies up to A5 (10 Ma), ... -
Late-Quaternary variations in clay minerals along the SW continental margin of India: Evidence of climatic variations
(Springer, 2000)Down-core variations in illite, chlorite, smectite and kaolinite (the major clays) in two sup(14)C-dated cores collected along the SW continental margin of India show that illite and chlorite have enhanced abundance during ... -
Growth response of a deep-water ferromanganese crust to evolution of the Neogene Indian Ocean
(Elsevier, 2000)A deep-water ferromanganese crust from a Central Indian Ocean seamount dated previously by sup(10)Be and sup(230) Th sub(excess) was studied for compositional and textural variations that occurred throughout its growth ... -
Distribution of grain size and clay minerals in sediments from the INDEX area, central Indian Basin
(Taylor and Francis, 2000)The granulometry of 21 box core sediments from five selected sites in the Central Indian Basin (CIB) have been studied to understand the sediment size characteristics in the Pioneer area before the benthic disturbance ... -
Seabottom characterization using multibeam echosounder angular backscatter: An application of the composite roughness theory
(IEEE, 2000)Composite roughness theory is used to characterize Southern Ocean bottom backscatter (multibeam) data. Spectral parameters based on Helmholtz-Kirchhof's theory (1) are determined from measured near-normal incidence values. ... -
Microscale response of sediment variables to benthic disturbance in the Central Indian Ocean Basin
(Taylor and Francis, 2000)The response of sediment bacteria and biochemical variables to benthic disturbance was investigated in the Central Indian Ocean Basin from cores at nine stations. Generally, bacterial density and biochemical variables ... -
Assessment of impact on seafloor features in INDEX area
(Taylor and Francis, 2000)Observations on seafloor features from subbottom profiling and seabed photography data show that the undisturbed and natural conditions before the benthic disturbance undergo a substantial change after operation of the ... -
Evaluation and performance enhancement of a pressure transducer under flows, waves, and a combination of flows and waves
(American Meteorological Society, 2000)The performance of a pressure transducer, with its inlet attached to differing hydromechanical front ends, has been evaluated in flow flume and wave flume experiments in which laminar and turbulent flows, and regular ... -
Applications of doppler effect in navigation and oceanography
(Marcel Dekker, N.Y., USA, 2000)The Doppler effect is the change in frequency of the received sound waves/electromagnetic waves when there is a relative motion between the transmitter and the receiver of these waves. This effect is used for diverse ... -
Very high resolution satellite data: New challenges in image analysis
(NIO, Dona Paula, Goa (India), 2000)Early years of coming century will see a large number of satellites with very high spatial resolution reaching beyond 1 m in the visible range of electromagnetic spectrum. Such images will come very close to giving a ... -
Carbon-nitrogen cycling in northern Indian Ocean
(Indian National Science Academy, New Delhi, India, 2000) -
Case studies of some major oil spills around India
(Society for Indian Ocean Studies, New Delhi, India, 2000) -
Variations in isotopic compositions of chlorine in evaporation-controlled salt lake brines of Qaidam Basin, China
(Science Press, Beijing, China, 2000)The variations in the isotopic compositions of chlorine in evaporation-controlled saline lake brines were determined by using an improved procedure for precise measurement of chlorine isotopes based on Cs sub(2) Cl sup(+) ... -
Free Sterols of the red alga Chondria armata (Kutz.) Okamura
(Walter de Gruyter, Berlin, 2000)The free sterols of the red alga, Chondria armata have been identified by means of NMR, EIMS and GCMS analyses. The mixture contained besides cholesterol, C sub(28) and C sub(29) saturated as well as unsaturated components. ... -
Increased marine production of N sub(2)O due to intensifying anoxia on the Indian continental shelf
(Macmillan, 2000)Eutrophication of surface waters and hypoxia in bottom waters has been increasing in many coastal areas, leading to very large depletions of marine life in the affected regions. These areas of high surface productivity and ... -
New acetogenin peroxides from the Indian sponge Acarnus bicladotylota
(American Chemical Society, 2000)Two new cyclic peroxides (1 and 2) and the known metabolite 3 have been found in the organic extract of the Indian sponge Acarnus bicladotylota. The structure of the new products has been assured by chemical and spectroscopic ... -
A new antitumor isoquinoline alkaloid from the marine nudibranch Jorunna funebris
(Pergamon, 2000)A new dimeric isoquinoline alkaloid, jorumycin (3), has been isolated from the skin and the mucus of the Pacific nudibranch Jorunna funebris. The structure has been fully elucidated on the grounds of ESMS data and of an ... -
Health status of the coastal waters of Mumbai and regions around
(Bookwell, New Delhi, India, 2000)The coastal marine environment of Mumbai, Maharashtra, India and regions around receives the domestic wastewater generated of around 1800 million litres per day (mld), mostly untreated. In addition, a large number of ... -
Comparative toxicity of water soluble fractions of four oils on the growth of a Microalga
(Walter de Gruyter, Berlin, 2000)Toxic effects of water soluble fractions (WSF) of four different fuel oils on a microalga. Tetraselmis gracilis, were examined and compared. On applying different concentrations of WSF, a decrease in cell population was ... -
A comparative study on growth performance and biochemical composition of mixed culture of Isochrysis galbana and Chaetoceros calcitrans with monocultures
(Elsevier, 2000)The growth performance, biochemical composition and nutritive value of the mixed culture of Isochrysis galbana and Chaetoceros calcitrans, grown in batch cultures under laboratory conditions was compared with those in ...