Browsing by Subject "Geology and Geophysics"
Now showing items 21-40 of 376
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An improved sediment sample splitter
(Indian Association for Limnology and Oceanography, 1972) -
An interactive program for digitization of seabed photographs
(CSIR-NISCAIR, 1989)A program for dignitization of seabed photographs to compute coverage and abundance of polymetallic nodules is developed. Since the objects in the seabed photograph are partially covered by thin sediment layer, the automatic ... -
Analysis of magnetic anomalies in relation to Placer deposits and basement configuration off Mirya bay, Central West coast of India
(1988)The offshore ilmenite placers off Konkan, central west coast of India, have been surveyed by echosounding, shallow seismic profiling, magnetics, and seabed sampling. The magnetic data show two different types of anomalies: ... -
Analysis of multi-channel seismic reflection and magnetic data along 13 degrees N latitude across the Bay of Bengal
(American Geophysical Union, 1994)Analysis of the multi-channel seismic reflection, magnetic and bathymetric data collected along a transect, 1110 km long parallel to 13 degrees N lat. across the Bay of Bengal was made. The transect is from the continental ... -
Anomalous behaviour of uranium isotopes in backwater sediments of Zuari river
(Elsevier, 1983)The surface leaching of the labile component of uranium has been carried out in estuarine sediments of Zuari River in Goa, India The measurements of alpha activities of sup(238) U, sup(235) U and sup(234) U in the leachates ... -
Application of electron microprobe technique to the characterization of volcanic sands
(Indian Association for Limnology and Oceanography, 1986) -
Application of high resolution shallow seismic investigations for marine archaeological sites
(Goa: National Institute of Oceanography, 1988) -
Application of inversion techniques on marine magnetic data: Andaman shelf
(Geological Society of India, 1994)Analysis of the total intensity magnetic data over the western Andaman shelf has been carried out for determination of depth to magnetic basement using the Analytical Signal and Wemer Deconvolution methods. The basement ... -
Arsenic in the shelf and slope sediments along the east coast of India
(Indian Association for Limnology and Oceanography, 1979) -
Australasian microtektites in a substrate: A new constraint on ferromanganese crust accumulation rates
(Elsevier, 1994)Microtektites belonging to the Australasian tektite strewn field are found in the substrate of a ferromanganese crust dredged from the Central Indian Basin. They are identified on their physical appearance, geographic ... -
Authigenic Gypsum in a Deep Sea Core from Southeastern Arabian Sea
(Geological Society of India, 1980)Authigenic gypsum has been encountered in a deep sea core RC9-157 from the southeastern Arabian Sea at a depth of 4111 m which is a zone of lysocline. The formation of gypsum in the deep sea region is attributed to the ... -
Bacteriology of ferromanganese nodules from the Indian Ocean
(Taylor & Francis, 1987)Bacteriological investigations of the ferromanganese nodules collected from the Indian Ocean indicate that microbial populations associated with the nodules are, in general, comparable to those of the Pacific and Atlantic ... -
Basalt microlapilli in deep sea sediments of Indian Ocean in the vicinity of Vityaz fracture zone
(Geological Society of India, 1989)Two cores recovered from the flanks of Mid-India oceanic ridge in the vicinity of Vityaz fracture zone consist of discrete pyroclastic layers at various depths. These layers are composed of coarse-grained, angular basaltic ... -
Basinal seamounts and seamount chains of the Central Indian Ocean: Probable near-axis origin from a fast-spreading ridge
(American Geophysical Union, 1994)Hydrosweep mapping of crust in the Central Indian Ocean Basin reveals abundant volcanoes occurring both as isolated seamounts and linear seamount chains parallel to flow lines. Their shapes, sizes and overall style of ... -
Beach changes at Visakhapatnam due to the cyclone of May 1979
(Indian Association for Limnology and Oceanography, 1982)The impact of the May, 1979 cyclonic storm on Visakhapatnam beach, India and the observations made on beach profiles, waves and littoral currents prior to and during the storm are discussed. In general, at Visakhapatnam ... -
Beach processes between Mulgund and Shiroda, west coast of India
(CSIR-NISCAIR, 1994)Study on beach processes for an year shows seasonal changes without annual net erosion. The beaches are stable and regain the maximum profiles during February to April. Distribution of longshore current direction is not ... -
Beach rock from Goa Coast
(Indian Academy of Sciences, Bangalore, 1972)Beach rock is a common rock type in many parts of the southern hemisphere and also some areas north of the equator. Its distribution particularly in the Indian Ocean islands and atolls and coasts of India is reviewed. The ... -
Beachrock and associated carbonate sediments on the fifty fathom flat, a submarine terrace on the outer continental shelf off Bombay
(Indian Academy of Sciences, Bangalore, 1971)