Record Details

Gas hydrate-related proxies inferred from multidisciplinary investigations in the India offshoe areas

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Gas hydrate-related proxies inferred from multidisciplinary investigations in the India offshoe areas
 
Creator Ramana, M.V.
Ramprasad, T.
Desa, M.
Sathe, A.V.
Sethi, A.K.
 
Subject Indian Ocean
seismic reflection
 
Description The presence of gas hydrates along the Indian continental margins has been speculated by earlier workers based on the identification of Bottom Simulating Reflection (BSR) on the multichannel seismic reflection records and computed gas hydrate stability zone thickness map. The BSR alone is inadequate to infer gas hydrates as suggested by drilling results elsewhere. Therefore, to understand the subsurface distribution of gas hydrates along the continental margins of India, multidisciplinary investigations have been undertaken. The observed geophysical anomalies (BSRs, pockmarks, gas upthrust zones, vents, blanking zones, etc.) in association with the geochemical (sulphate reduction trend and increase in methane flux with core depth) and microbiological proxy indicators (sulphate and nitrate- reducing bacteria, and fermenters) favour the presence of gas hydrates in some of the Indian offshore regions.
 
Date 2006-09-02T10:57:14Z
2006-09-02T10:57:14Z
2006
 
Type Journal Article
 
Identifier Current Science. vol.91(2), 183-189p.
http://drs.nio.org/drs/handle/2264/346
 
Language en
 
Format 330460 bytes
application/pdf
 
Publisher Indian Academy of Sciences