DRS at CSIR-National Institute of Oceanography: Recent submissions
Now showing items 4951-4970 of 9376
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Seasonal variation in the flux of planktic foraminifera: Sediment trap results from the Bay of Bengal, Northern Indian Ocean
(Cushman Foundation for Foraminiferal Research, 1997) -
Ilmenite placer deposits in the bays of Jaigad, Ambwah and Varvada, Maharashtra, India
(Geological Survey and Mines Bureau, Dehiwala, Sri Lanka, 1997)Growing demand for ilmenite owing to very limited resources of rutile and technological advancements in the industrial utilisation of ilmenite in place of rutile have excited interest in large-scale exploration for ilmenite ... -
Monsoon signatures in recent corals from the Laccadive Islands
(Indian Association of Sedimentologists, Aligarh, 1997)X-radiographs of the coral (Porites sp.) collected from several atolls of Lakshadweep show alternate bands of low and high density, formed in non-monsoon period and monsoon period, respectively. The results reveal annual ... -
Isotopic compositions of boron in sediments and their implications
(Current Science Association, Bangalore, 1997)The abundance and isotopic compositions of boron in sediments from the salt lakes of Qaidam Basin, China have been determined by thermal ionization mass spectrometry of cesium borate. The results show large variations in ... -
Marine magnetic anomalies as a link between the granulite belts of east coast of India and enderby land of Antarctica
(Geological Society of India, 1997)Magnetic data of the eastern continental margin of India (ECMI) helped in demarcating the offshore extension of the granulite belts of east coast of India and their possible link to those of the East Aantarctica. Short ... -
Climate induced changes in beach morphology and sediment dynamics, Machilipatnam
(Cent. for Earth Sci. Stud., Cochin (India), 1997)The wave climate, littoral current patterns, monthly and seasonal longshore drift rates, beach profile changes, and sediment budget of the beach sediments were determined along Machilipatnam, Andhra Pradesh (India) for the ... -
Geophysical investigations over a segment of the Central Indian Ridge, Indian Ocean
(Springer, 1997)Swath bathymetric, gravity, and magnetic studies were carried out over a 55 km long segment of the Central Indian Ridge. The ridge is characterized by 12 to 15 km wide rift valley bounded by steep walls and prominent ... -
Sediment transport near the Peninsular tip of India
(Cent. for Earth Sci. Stud., Cochin (India), 1997)Studies were undertaken at Kolachel on the western side of the Peninsular tip from April 1995 to April 1996, for a period of one year. Monthly measurements were made on littoral environment observations (LEO) and beach ... -
Initial results of India's environmental impact assessment of nodule mining
(Metal Mining Agency of Japan, 1997)The Indian Deepsea Experiment (INDEX) was intiated in 1995, with the objective of predicting the environmental impact of nodule mining, in the Central Indian Basin. More than 20 scientists and technical staff of the National ... -
Some geodynamic complexities related to the evolution of Bengal Fan and the neotectonic activity of the south Indian shield
(Current Science Association, Bangalore, 1997)After three decades of the International Indian Ocean Expedition (IIOE) and in spite of extensive geophysical data collected during the last one decade, the geodynamics of the Bengal Fan and the Peninsular shield at the ... -
Evidences of monsoon variability from marine sediments: A comparison with archaeological records
(NIO, Dona Paula, Goa, India, 1997) -
Studies on sediment transport along Kerala Coast, south west coast of India
(NISCAIR, CSIR, 1997)Longshore sediment transport characteristics of the Kerala Coast have been examined to delineate various physical processes affecting the different coastal environments. Monthly averages of the daily LEO (Littoral Environmental ... -
Geochemical constraints on the hydrothermal origin of ferromanganese encrustations from the Rodriguez Triple Junction, Indian Ocean
(Geological Society, London, UK, 1997) -
Pseudo sidescan images from backscatter amplitude data of the Hydrosweep multibean sonar system
(NISCAIR, CSIR, 1997)Using the rms (root mean square) backscatter amplitude values, a procedure was evolved to generate pseudo sidescan images. A comparison of the pseudo sidescan image with actual Hydrosweep sidescan image, from an area ... -
Location of marine outfall and design of diffuser for a shore based industry off southeast coast of India
(Andhra University, Visakhapatnam, 1997)Disposal of industrial effluent in the sea necessitates exhaustive study on the marine environment and the hydrodynamic behavior of the plume discharge with the ocean. Site specific baseline information on currents, waves, ... -
Reduction in density of suspended - sediment - laden natural waters
(Cent. for Earth Sci. Stud., Cochin (India), 1997)Pressure measurements made in various turbid natural waters have led to the inference that the effective depth-mean in-situ density values peff of these waters are less than (approx equal to 2.70%) their static bulk densities ... -
Acoustic remote sensing of ocean flows
(Narosa, New Delhi (India), 1997)Acoustic techniques have become powerful tools for measurement of ocean circulation mainly because of the ability of acoustic signals to travel long distances in water, and the inherently non-invasive nature of measurement. ... -
Weather station for scientific data collection
(Cent. for Earth Sci. Stud., Cochin (India), 1997)A state of are automatic weather station has been developed primarily to support, research programs on oceanographic and climatic studies. The basic system includes a suite of sensors for measurement of wind velocity, air ... -
Challenges in marine instrumentation
(Cent. for Earth Sci. Stud., Cochin (India), 1997)The problems of ocean science are technology intensive as the area to be surveyed is vast, complex and hostile. The accessibility of most of the areas too, puts severe constraints on the design methodology, specially the ... -
Study of multibeam techniques for bathymetry and seabottom backscatter applications
(Cochin University of Science and Technology, Kochi, 1997)In this paper, a brief discussion is carried out on the application of the different techniques of echosounding. A deteiled appraisal of the presently used multibeam technique is mentioned. Some of the important discoveries ...