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Watermass structure at benthic disturbance site (INDEX area) and anticipated mining effects on hydro-physical properties

DRS at CSIR-National Institute of Oceanography

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Title Watermass structure at benthic disturbance site (INDEX area) and anticipated mining effects on hydro-physical properties
 
Creator RameshBabu, V.
Murty, V.S.N.
Suryanarayana, A.
Beena, B.S.
Niranjan, K,
 
Subject deep-water masses
temperature
salinity
environmental impact
mining
mine tailings
benthic environment
 
Description Watermass properties were obtained in the Indian Deep Sea Experiment (INDEX) area during pre- (27 May-8 July 1997) and post- (22 July-5 September, 1997) benthic disturbance periods respectively. Watermass (Temperature-Salinity: T-S) structure was characterised with the presence of North Indian Deep Waters having a salinity maximum of 34.75 psu around 45.7 sigma isopycnal. A near-depth uniformity in temperature and salinity in the abyssal water column was due to Antarctic Bottom Watermass with 45.95 sigma. The light transmission profiles showed very negligible changes (1 to 2%) from pre- to post-disturbance periods suggesting that the bottom waters were not affected by the sediment plumes. The intrusion depths of surface-discharged mining effluents were assessed and the anticipated mining effects in surface layers are discussed.
 
Date 2009-01-10T11:35:50Z
2009-01-10T11:35:50Z
1999
 
Type Conference Article
 
Identifier The Proceedings of the Third (1999) ISOPE Ocean Mining Symposium, Goa, India, 1999, eds. Chung, J.S.; Sharma, R. 208-215p.
http://drs.nio.org/drs/handle/2264/1829
 
Language en
 
Rights Copyright [1999]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher International Society of Offshore and Polar Engineers, Cupertino, CA (USA)