DRS at CSIR-National Institute of Oceanography: Recent submissions
Now showing items 4631-4650 of 9376
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Living coccolithophorids from the Arabian Sea
(Department of Earth Sciences, University of Milan, 1995)Coccolithophorids collected from the euphotic zone in the Arabian Sea during the tail end of summer monsoon (Sept. 20 to Oct. 06, 1992) were studied. Nineteen species were recorded, most abundant among them were, Emiliania ... -
Influence of distribution characteristics and associated seabed features on exploitation of cobalt-rich manganese deposits
(Int. Soc. Offshore and Polar Eng., Japan, 1995)Method of exploitation, selection of mine site and desing of mining system of cobalt-rich manganese deposits on seamounts would be greatly influenced by the distribution characteristics as well as the associated seabed ... -
Nodules size: An important factor in nodule mining?
(Int. Soc. of Offshore and Polar-Eng.(ISOPE), Colorado, USA, 1995)A study of about 850 different sized nodules from 234 sites in the Central Indian Basin (CIB) showed a clear inverse relationship between size and grade of nodules. Among the different sized nodules, only the small (less ... -
Recent foraminifera along west coast of India: Restrospect, perspect and prospect
(Indian Academy of Geoscience, 1995)An immense quantum of work on foraminifera is being carried out in Indian waters by various research centers and universities. However, a thorough review of the foraminiferal studies from Indian waters is yet to be amde. ... -
Studies on normal incidence backscattering in nodule areas using the multibeam-hydrosweep system
(Cochin Univ. Sci. and Technol., Cochin, India, 1995)The acoustic response from areas of varying nodule abundance and number densities in the Central Indian Ocean has been studied by using the echo peak amplitudes of the normal incidence beam in the Multibeam Hydrosweep ... -
Offshore structural trends from magnetic data over Cauvery Basin, east coast of India
(Geological Society of India, 1995)Detailed analysis of magentic and bathymetric data over shelf and slope regions of Cauvery Basin, east coast of India, between Mahabalipuram and Vedaranyam demarcated three major offshore lineaments trending N-S, NE-SW and ... -
Worldwide databases in marine geology: A review
(Elsevier, 1995) -
Monsoon-induced temporal changes in beach morphology and associated sediment dynamics, central east coast of India
(Coastal Research Foundation, 1995) -
Seafloor characterisation using echo peak amplitudes of multibeam hydrosweep system - A preliminary study at Arabian Sea
(Cochin Univ. Sci. and Technol., Cochin, India, 1995)In this paper an interface to acquire 59-beams echo peak amplitudes of the Hydrosweep Multibeam system is established. The echo peak amplitude values collected at varying seabed provinces of Arabian sea are presented. The ... -
Phosphorites from the Oman Margin, ODP Leg 117
(Ifremer/ CNRS/ IRD/ Editions scientifiques et medicales Elsevier SAS. Tous droits reserves, 1995)The phosphorite levels present in the ODP cores of the Oman margin are of two types: (a) sediment levels dominated by phosphate grains with a few white to light-brown nodules; these are sandy and predominantly occur in ... -
Large philipsite crystal as ferromanganese nodule nucleus
(Springer, 1995)We report here the occurrence of, to date, the largest (21 x 10 x 8 mm) phillipsite crystal forming the nucleus of a diagenetically formed ferromanganese nodule from the Central Indian Ocean Basin (CIOB). Assuming an average ... -
Marine magnetic studies over a lost wellhead in Palk Bay, Cauvery Basin, India
(Geological Society of India, 1995)Close grid marine magnetic surveys in the vicinity of a drill well site PH 9-1 in Palk Bay revealed that the area is characterized by smooth magnetic field except for a local anomaly caused by a lost wellhead. The smooth ... -
Transparent heavy mineral distribution in the Bays of Jaigad, Ambwah, and Varvada, Ratnagiri District, Maharashtra
(Indian Association of Sedimentology, 1995) -
Distribution of major, trace and rare-earth elements in surface sediments of the Wharton Basin, Indian Ocean
(Elsevier, 1995)Bulk chemical analysed of eighteen surface sediments taken on an east-west transect (lat. 15 degrees 40'S) in the Wharton Basin, Indian Ocean, were analysed for major, trace and rare-earth elements (REE) by inductively ... -
Establishment of gravity stations and inference of crustal thickness around Mormugao Harbour and NIO
(Geological Society of India, 1995)Complete descriptions and basic facts of nine gravity stations of Marmugao Harbour, Goa, India are presented. They exhibit a maximum Bouguer difference of 2.12 mGal in an overall distance of about 2 km. Keeping in view the ... -
Supra-generic radiolarian transfer function based late Miocene palaeomonsoonal changes in the northeastern tropical Indian Ocean
(Indian Geological Association, 1995)A Q-mode factor analysis of the % data of 25 broadly defined supra-generic radiolarian groups in 42 deep-sea surface sediments produced four statistically significant and geographically distinct faunal assemblages related ... -
Geochemistry of calcareous sediments from the SW Carlsberg Ridge: Evidence for deeper carbonate compensation depth
(NISCAIR, CSIR, 1995)Concentration of Mn, Fe, Ni, Co, Zn, Ca, Mg, K, Al, Si, Ti, P and CaCO sub(3) show wide range for the calcareous sediments from SW Carlsberg Ridge (CR). Compared with the average pelagic clays, the CR sediments are enriched ... -
Marine sediments and palaeoclimatic variations since the Late Pleistocene: An overview for the Arabian Sea
(Geol. Soc. India, Bangalore, 1995)A large number of surfacial and sub-surface sediments from the Arabian Sea have been studied to enhance our understanding of palaeoclimatic variations over the Indian region. Bsically the surficial sediments have been ... -
Fresh pumice from the Central Indian Basin: A Krakatau 1883 signature
(Elsevier, 1995)The occurrence of pumice in the Central Indian Basin (CIB) has been a controversy. Some are of the opinion that these pumices are erupted from a volcano along the Ninetyeast ridge while others suggest the Indonesian are ... -
Evidences for a volcanic province in the Central Indian Basin
(Geological Society of India, 1995)Based on various lines of evidence such as the widespread occurrence of basalts, pumice, volcanic glass shards and their transformational products (zeolites, palagonites, and smectite-rich sediments), we suggest the presence ...