NDLI: Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the Krishna–Godavari Basin offshore, east coast of India

Please wait, while we are loading the content...

A high-resolution geophysical investigation of sediment distribution controlled by catchment size and tides in a multi-basin turbid outwash fjord: Simpson Bay, Prince William Sound, Alaska

Sandbank occurrence on the Dutch continental shelf in the North Sea

Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the Krishna–Godavari Basin offshore, east coast of India

Unraveling subtle details of expendable bottom penetrometer (XBP) deceleration profiles

Modern sediments and sediment accumulation rates on the narrow shelf off central Vietnam, South China Sea

Latitudinal trends in morphological characteristics of Neogloboquadrina pachyderma (Ehrenberg) along a north–south transect in the south-western Indian Ocean

Geo-Marine Letters : Volume 28

Geo-Marine Letters : Volume 27

Geo-Marine Letters : Volume 26

Geo-Marine Letters : Volume 25

Geo-Marine Letters : Volume 24

Geo-Marine Letters : Volume 23

Geo-Marine Letters : Volume 22

Geo-Marine Letters : Volume 21

Geo-Marine Letters : Volume 20

Geo-Marine Letters : Volume 19

Geo-Marine Letters : Volume 18

Geo-Marine Letters : Volume 17

Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the Krishna–Godavari Basin offshore, east coast of India

Content Provider	Springer Nature Link
Author	Ramana, M. V. Ramprasad, T. Paropkari, A. L. Borole, D. V. Ramalingeswara Rao, B. Karisiddaiah, S. M. Desa, M. Kocherla, M. Joao, H. M. Lokabharati, P. Gonsalves, Maria Judith Pattan, J. N. Khadge, N. H. Prakash Babu, C. Sathe, A. V. Kumar, P. Sethi, A. K.
Copyright Year	2008
Abstract	We report 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, to explore indicators of likely gas hydrate occurrence suggested by preliminary multi-channel seismic reflection data and estimates of gas hydrate stability zone thickness. Swath bathymetry data reveal new evidence of three distinct geomorphic units representing (1) a delta front incised by several narrow valleys and mass flows, (2) a deep fan in the east and (3) a WNW–ESE-trending sedimentary ridge in the south. Deep-tow digital side-scan sonar, multi-frequency chirp sonar, and sub-bottom profiler records indicate several surface and subsurface gas-escape features with a highly resolved stratification within the upper 50 m sedimentary strata. Multi-channel seismic reflection data show the presence of bottom simulating reflections of continuous to discrete character. Textural analyses of 76 gravity cores indicate that the sediments are mostly silty clay. Geochemical analyses reveal decreasing downcore pore water sulphate (SO4 2−) concentrations (28.7 to <4 mM), increasing downcore methane (CH4) concentrations (0–20 nM) and relatively high total organic carbon contents (1–2.5%), and microbial analyses a high abundance of microbes in top core sediments and a low abundance of sulphate-reducing bacteria in bottom core sediments. Methane-derived authigenic carbonates were identified in some cores. Combined with evidence of gas-escape features in association with bottom simulating reflections, the findings strongly suggest that the physicochemical conditions prevailing in the study area are highly conducive to methane generation and gas hydrate occurrence. Deep drilling from aboard the JOIDES Resolution during 2006 has indeed confirmed the presence of gas hydrate in the Krishna–Godavari Basin offshore.
Starting Page	25
Ending Page	38
Page Count	14
File Format	PDF
ISSN	02760460
Journal	Geo-Marine Letters
Volume Number	29
Issue Number	1
e-ISSN	14321157
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-08-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geology
Content Type	Text
Resource Type	Article
Subject	Environmental Science Geotechnical Engineering and Engineering Geology Oceanography

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the Krishna–Godavari Basin offshore, east coast of India

Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the Krishna–Godavari Basin offshore, east coast of India

Gas hydrate occurrence in the Krishna-Godavari offshore basin off the east coast of India

Gas hydrate occurrence in the Krishna-Godavari Basin offshore, East coast of India

Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the krishna–godavari basin offshore, east coast of india.

A note on geochemistry of surface sediments from Krishna-Godavari basin, East Coast of India

Geothermal modeling of the gas hydrate stability zone along the Krishna Godavari Basin

Offshore permafrost and gas hydrate stability zone on the shelf of East Siberian Seas

Controls on evolution of gas‐hydrate system in the Krishna‐Godavari basin, offshore India

Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the Krishna–Godavari Basin offshore, east coast of India

Similar Documents

Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the Krishna–Godavari Basin offshore, east coast of India

Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the Krishna–Godavari Basin offshore, east coast of India

Gas hydrate occurrence in the Krishna-Godavari offshore basin off the east coast of India

Gas hydrate occurrence in the Krishna-Godavari Basin offshore, East coast of India

Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the krishna–godavari basin offshore, east coast of india.

A note on geochemistry of surface sediments from Krishna-Godavari basin, East Coast of India

Geothermal modeling of the gas hydrate stability zone along the Krishna Godavari Basin

Offshore permafrost and gas hydrate stability zone on the shelf of East Siberian Seas

Controls on evolution of gas‐hydrate system in the Krishna‐Godavari basin, offshore India

Multidisciplinary investigations exploring indicators of gas hydrate occurrence in the Krishna–Godavari Basin offshore, east coast of India