Record Details

Effect of benthic disturbance on geotechnical characteristics of sediments from nodule mining area in the Central Indian Basin

DRS at CSIR-National Institute of Oceanography

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Title Effect of benthic disturbance on geotechnical characteristics of sediments from nodule mining area in the Central Indian Basin
 
Creator Khadge, N.H.
 
Subject environmental impact
benthic environment
deep-sea mining
ferromanganese nodules
sediment properties
porosity
geotechnical data
water content
siliceous sediments
shear strength
 
Description Benthic disturbance is carried out in the Central Indian Basin for environmental impact assessment studies. Geotechnical measurements were made on sediments collected before and after disturbing the top 10-15 cm of the seafloor. Results indicate that the water content of siliceous sediments is high due to high porosity. The comparative studies revealed increase in sediment water content after the disturbance. Shear strength showed large variations with no specific trend due to disturbance; that could affect the bearing capacity of sediments. Significant reductions in the strength values in surface (0-5 cm) sediments from the towed zone of the disturber are observed. Porosity and wet density have not shown any significant change.
 
Date 2009-01-10T11:09:57Z
2009-01-10T11:09:57Z
1999
 
Type Conference Article
 
Identifier The Proceedings of the Third (1999) ISOPE Ocean Mining Symposium, Goa, India, 1999, eds. Chung, J.S.; Sharma, R. 138-144p.
http://drs.nio.org/drs/handle/2264/1767
 
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)