DRS at CSIR-National Institute of Oceanography: Recent submissions
Now showing items 5211-5230 of 9376
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Hydrocarbons in the Bay of Bengal and Central Indian Basin bottom sediments: Indicators of geochemical processes in the lithosphere
(Elsevier, 1999)A study on the bulk distributions and molecular structures of n-alkanes and polycyclic aromatic hydrocarbons (PAH) in organic matter of the sediments from the Bay of Bengal and the Eastern and Central Indian Basins was ... -
Indian deepsea environment experiment (index): Achievements and applications
(International Society of Offshore and Polar Engineers, Cupertino, CA (USA), 1999)Significant results have been obtained from an extensive database generated on water column and benthic baseline conditions. Seafloor surveys have resulted in selection of suitable test and reference areas, and in ... -
Spatial and temporal distribution of foraminifera in sediments off the central west coast of India and use of their test morphologies for the reconstruction of paleomonsoonal precipitation
(Micropaleontology Press, 1999)From the shallow region off the central west coast of India, 21 samples of surface sediments (ranging in depth from 22 to 52 m) along with two sediment cores of 4.80 m and 4.00 m (surface/subsurface) have been analyzed for ... -
The meandering Indus, channels: Study in a small area by the multibeam swath bathymetry system - Hydrosweep
(Current Science Association, Bangalore, India, 1999)The discharge of sediments by the river Indus has accumulated into a 2500 m thick pile, forming one of the largest deep sea fans in the world. Though there are many reports on channels in different regions of tha fan, we ... -
Australian minitektites discovered in the Indian Ocean
(Meteoritical Society, Fayetteville, USA, 1999)Large area sampling with a box core in the Indian Ocean has led to the discovery of minitektites (> 1-3.75 mm long) and a tektite fragment (approx 1.25 mm) occuring with microtektites belonging to the Australasian tektite ... -
Factors controlling vertical fluxes of prrticles in the Arabian Sea
(Geological Society of India, 1999)Particle fluxes were measured using six time-series sediment traps at three sites in the western (16 degrees 20'N; 60 degrees 30'E), central (14 degrees 31'N; 64 degrees 46'E) and eastern (15 degrees 31'N; 68 degrees 43'E) ... -
Ferromanganese oxides on sharks' teeth from Central Indian Ocean Basin
(Council of Scientific and Industrial Research, New Delhi, 1999)The mineralogy, composition and growth rates of ferromanganese (Fe-Mn) oxides over the sharks' teeth from the Central Indian Ocean Basin are presented. The trends of metal enrichment (Mn, Ni, Cu and Zn) and depletion (Fe ... -
60 Myr records of major elements and Pb-Nd isotopes from hydrogenous ferromanganese crusts: Reconstruction of seawater paleochemistry
(Pergamon, 1999)The time series of major element geochemical and Pb- and Ni-isotopic composition obtained for seven hydrogenous ferromanganese crusts from the Atlantic, Indian, and Pacific Oceans which cover the last 60 Myr are compared. ... -
Effect of benthic disturbance on geotechnical characteristics of sediments from nodule mining area in the Central Indian Basin
(International Society of Offshore and Polar Engineers, Cupertino, CA (USA), 1999)Benthic disturbance is carried out in the Central Indian Basin for environmental impact assessment studies. Geotechnical measurements were made on sediments collected before and after disturbing the top 10-15 cm of the ... -
Petrogenesis of ferromanganese nodules from east of the Chagos Archipelago, Central Indian Basin, Indian Ocean
(Elsevier, 1999)Deep-sea ferromanganese nodules occur over a large area and on many different sediment types of the Central Indian Basin, Indian Ocean. Selected samples were studied to determine their chemical and mineralogical compositions ... -
Appraisal of geomorphology of the Goa coast
(ICMAM-PD, Chennai (India), 1999)The National Institute of Oceanography is carrying out a comprehensive geological and geophysical survey of the continental margin of India. As a part of this project, a geomorphologic study of the coastal area was carried ... -
Chemistry and possible resource potential of cobalt rich ferromanganese crust from Afanasiy-Nikitin seamount in the Indian Ocean
(Geological Survey of India, 1999)Samples of ferromanganese encrustations (fe-Mn crusts) dredged from the upper flank of the Afanasiy-Nikitin seamount, above the Carbonate Compensation Depth (CCD) in the Northern Central Indian Ocean (NCIO) were analysed ... -
Ferrobasalts from the Central Indian Ocean Basin
(Springer, 1999)The occurrence of ferrobasalts recovered from the Central Indian Ocean Basin crust generated at the Southeast Indian Ridge during a phase of moderate to fast spreading accretion (approx 110-190 mm/yr, full rate) is reported. ... -
Quaternary carbonate record from the equatorial Indian Ocean and its relationship with productivity changes
(Elsevier, 1999)The CaCO sub(3) content in Quaternary deep-sea sediments from Pacific and Atlantic oceans have been suggested to respond differently to glacial/interglacial cycles; CaCO sub(3), contents are highest during glacials in ... -
Synthesis of morphotectonics and volcanics of the Central Indian Ocean Basin
(Current Science Association, Bangalore, India, 1999)The Central Indian Ocean Basin (CIOB) is an enigmatic ocean basin in the young and tectonically complex Indian Ocean. Major tectonic and volcanic forms identified are fracture zones, abyssal hills, seamounts and ridges and ... -
Some aspects of volcanic ash layers in the Central Indian Basin.
(Springer, 1999)Intercalated volcanic ash layers in two deep-sea sediment cores from the Central Indian Basin (CIB) are examined for the possibility of an in situ source of suboceanic volcanism. An in situ source has been predicated based ... -
Gas hydrates stability zone thickness map of Indian deep offshore areas - A GIS based approach
(Indian Oil Corporation, New Delhi, India, 1999)Natural gas hydrates, which have the potential of being an alternate energy resource, are known to occur worldwide in the sediments of the outer continental margins and in the polar regions in association with permafrost. ... -
Paleocene on-spreading-axis hotspot volcanism along the Ninetyeast Ridge: An interaction between the Kerguelen hotspot and the Wharton spreading center
(Indian Academy of Sciences, Bangalore, India, 1999)Investigations of three plausible tectonic settings of the Kerguelen hotspot relative to the Wharton spreading center evoke the on-spreading-axis hotspot volcanism of Paleocene (60-54 Ma) age along the Ninetyeast Ridge. ... -
Trace elements in near-shore sediments along the east and west coasts of India
(Science and Technology Agency of Japan (JISTEC, STA), Japan, 1999)To understand the distribution of trace elements and their controlling factors in the coastal regions of India. Some representative sediment samples from the nearshore regions were selected from the east and west coasts ... -
Neotectonism - An offshore evidence from eastern continental shelf off Visakhapatnam
(Current Science Association, Bangalore, India, 1999)A minor tremor measuring 4.5 on the Richter scale occurred around 4.58 p.m. on 18 December 1995, with its epicentre located in the Bay of Bengal, nearly 30 km east of Vizianagaram on the Andhra Pradesh coast. The location ...