Browsing by Subject "gas hydrates"
Now showing items 1-20 of 28
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Anisotropic amplitude variation of the bottom-simulating reflector beneath fracture-filled gas hydrate deposit
(American Geophysical Union, 2013)For the first time, we report the amplitude variation with angle (AVA) pattern of bottom-simulating reflectors (BSRs) beneath fracture-filled gas hydrate deposits when the effective medium is anisotropic. The common depth ... -
Authigenic Gypsum in Gas-Hydrate Associated Sediments from the East Coast of India (Bay of Bengal)
(Geological Society of China, 2013)Authigenic gypsum crystals, along with pyrite and carbonate mineralization, predominantly calcites were noticed in distinct intervals in a 32 m long piston core, collected in the gas hydrate-bearing sediments in the northern ... -
Detection of gas-charged sediments and gas hydrate horizons along the western continental margin of India
(Geological Society, 1998)High-resolution seismic reflection and sub-bottom profiling on the continental margin off western India has revealed the presence of characteristic acoustic maskings in the form of wipe-outs, reflector terminations and ... -
Diagenesis of magnetic minerals in a gas hydrate/cold seep environment off the Krishna-Godavari basin, Bay of Bengal
(Elsevier, 2013)Detailed magnetic measurements of the core (MD161/8) located in the vicinity of Site NGHP-01-10 was carried out, where approx. 128 m of hydrate is confirmed by drilling/coring, to understand the diagenesis of magnetic ... -
Diverse methane concentrations in anoxic brines and underlying sediments, eastern Mediterranean Sea
(Pergamon, 2000)Elevated methane (CH sub(4)) concentrations (128-2692x10 sup(3) nM) occur in the hypersaline anoxic brine pools of Bannock and Urania Basins, eastern Mediterranean Sea, compared to low concentrations (17-80x10 sup(3) nM) ... -
Evidence of paleo-cold seep activity from the Bay of Bengal, offshore India
(American Geophysical Union, 2009)Evidence of paleo–cold seep associated activities, preserved in methane-derived carbonates in association with chemosynthetic clams (Calyptogena sp.) from a sediment core in the Krishna-Godavari basin, Bay of Bengal is ... -
Evidence of slumping/sliding in Krishna-Godavari offshore basin due to gas/fluid movements
(Elsevier, 2011)The Krishna-Godavari (KG) offshore basin is one of the promising petroliferous basins of the eastern continental margin of India. Drilling in this basin proved the presence of gas hydrate deposits in the shallow marine ... -
Fault system and thermal regime in the vicinity of site NGHP-01-10, Krishna-Godavari basin, Bay of Bengal
(Elsevier, 2011)Drilling/coring activities onboard JOIDES Resolution for hydrate resource estimation have confirmed gas hydrate in the continental slope of Krishna-Godavari (KG) basin, Bay of Bengal and the expedition recovered fracture ... -
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. ... -
Gas-hydrates in Krishna-Godavari and Mahanadi basins: New data
(Geological Society of India, 2012) -
Geo-scientific investigations of gas-hydrates in India
(Indian National Science Academy, 2012)The best solution to meet India's overwhelming energy requirement is to tap the nuclear and solar power to the maximum extent possible. Another feasible major energy resource is gas-hydrates (crystalline substances of ... -
Geochemical and geological constraints on the composition of marine sediment pore fluid: Possible link to gas hydrate deposits
(Elsevier, 2012)Pore water sulfate consumption in marine sediments is controlled by microbially driven sulfate reduction via organo-clastic and methane oxidation processes. In this work, we present sediment pore fluid compositions of 10 ... -
Marine geology
(Indian Natl. Sci. Acad., New Delhi-110 002, India, 2000)Significant scientific contributions in Marine Geology in India during the Nineties have been highlighted in this paper. Sediment trap data collected in the Arabian Sea and Bay of Bengal have provided much understanding ... -
Methane hydrates in marine sediments - Untapped source of energy
(2001)Existing largely in the form of a crystalline, frozen mixture of methane and water under low temperature and high pressure, methane hydrates are now looked upon as an untapped source of hydrocarbon energy) Methane production ... -
Mineral resources
(Oxford and IBH, New Delhi, 2001)Marine minerals have been center of attraction to mankind since ancient times. The technological advances in the recent years show that the retrieval of underwater minerals from deep-sea can no longer be a dream. Marine ... -
Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the Krishna–Godavari Basin offshore, east coast of India
(Springer, 2009)Some main results of multidisciplinary investigations carried out within the framework of the Indian National Gas Hydrate Program in 2002–2003 in the Krishna–Godavari Basin offshore sector, east coast of India are reported, ... -
Occurrence of gas hydrates along the continental margins of India, particularly the Krishna-Godavari offshore basin
(Taylor and Francis, 2007)The presence of gas hydrates along the Indian continental margins has been inferred mainly from the bottom simulating reflection/reflector (BSR) and the gas hydrate stability zone thickness map of India. Multidisciplinary ... -
Oceans: Geochemistry and mineral resources
(2002)With increased exploitation of the onshore mineral resources, oceans that cover almost 71% of earth's surface and known as storehouse of minerals, provide a suitable alternative. Amongst the various underwater mineral ... -
Pore-water sulfate concentration profiles of sediment cores from Krishna-Godavari and Goa basins, India
(The Geochemical Society of Japan, 2007)Several cores from Krishna-Godavari (Western Bay of Bengal) and Goa (India) (Eastern Arabian Sea) basins have been studied for pore water sulfate concentrations in order to understand and contrast the diagenetic processes. ... -
Potential impact on climate of the exploitation of methane hydrate deposits offshore
(Elsevier, 2003)Considerable attention has focussed on methane hydrates as a potential energy resource but much less on the potential environmental problems of exploiting these deposits. In fact, methane hydrate deposits represent a dynamic ...