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Sedimentological impacts of INDEX experiment

DRS at CSIR-National Institute of Oceanography

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Title Sedimentological impacts of INDEX experiment
 
Creator Valsangkar, A.B.
Ambre, N.V.
Rodrigues, M.
 
Subject environmental impact
benthic environment
deep-sea mining
ferromanganese nodules
sediment texture
sediment chemistry
clays
 
Description The polymetallic nodule exploration programme (PMN) has already identified one Indian mine site in the Central Indian Basin (CIB) where deep-sea mining activities are likely to start in future. In order to assess the probable impacts of nodule mining on the surrounding environments in CIB, the benthic disturbance experiment was carried out by operating the sediment resuspension equipment (disturber) in the Indian Pioneer Area. Results of extensive studies conducted before and after the disturber experiment suggest that noticeable changes occur in the sediment texture, clay mineralogy and grain size parameters. The grain size and mineralogical data has further been utilized in characterizing the sediment plume as well as its direction of movement. The results are presented the post-disturbance effects on benthic environment are discussed.
 
Date 2009-01-10T11:10:00Z
2009-01-10T11:10:00Z
1999
 
Type Conference Article
 
Identifier The Proceedings of the Third (1999) ISOPE Ocean Mining Symposium, Goa, India, 1999, eds. Chung, J.S.; Sharma, R. 131-137p.
http://drs.nio.org/drs/handle/2264/1778
 
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)