The first record of active methane (cold) seep ecosystem associated with shallow methane hydrate from the Indian EEZ

Here we report the discovery of cold-seep ecosystem and shallow methane hydrates (2–3 mbsf) associated with methane gas flares in the water column from the Indian EEZ for the first time. The seep-sites are located in the Krishna–Godavari (K–G) basin at water depths of 900–1800 m and are characterize...

Full description

Saved in:
Bibliographic Details
Published in:Journal of Earth System Science 2019-02, Vol.128 (1), p.1-8, Article 18
Main Authors: Mazumdar, A, Dewangan, P, Peketi, A, Gullapalli, S, Kalpana, M S, Naik, G P, Shetty, D, Pujari, S, Pillutla, S P K, Gaikwad, V V, Nazareth, D, Sangodkar, N S, Dakara, G, Kumar, A, Mishra, C K, Singha, P, Reddy, R
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Ecosystems
Flares
Gas hydrates
Gases
Gastropods
Hydrates
Marine molluscs
Methane
Methane hydrates
Mollusks
New records
Salinity
Sediments
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Stability
Water circulation
Water column
Water depth
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Here we report the discovery of cold-seep ecosystem and shallow methane hydrates (2–3 mbsf) associated with methane gas flares in the water column from the Indian EEZ for the first time. The seep-sites are located in the Krishna–Godavari (K–G) basin at water depths of 900–1800 m and are characterized by gas flares in the water-column images. The occurrence of methane gas hydrates at very shallow depths (2–3 mbsf) at some of the seep-sites is attributed to high methane flux and conducive P–T conditions, necessary for the stability of methane hydrate. Chemosymbiont bearing Bivalves (Vesicomidae, Mytilidae, Thyasiridae and Solemyidae families); Polychaetes (Siboglinidae family) and Gastropods (Provannidae family) are also identified from seep-sites.
ISSN:0253-4126
0973-774X
DOI:10.1007/s12040-018-1044-y