Chemical characteristics of Central Indian Basin waters during the southern summer
Chemical properties of the water column were examined at the Indian Deep-sea Environment Experiment (INDEX) site in the Central Indian Basin (CIB), as a part of baseline studies prior to the benthic disturbance experiment for the environmental impact assessment of mining of polymetallic nodules. The...
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ftnio:oai:dsr.nio.org:2264/1535 2023-05-15T13:59:28+02:00 Chemical characteristics of Central Indian Basin waters during the southern summer DeSousa, S.N. Sardessai, S. RameshBabu, V. Murty, V.S.N. Gupta, G.V.M. 2001 http://drs.nio.org/drs/handle/2264/1535 en eng Pergamon Copyright [2001]. 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. water column chemical properties baseline studies water masses water properties summer Journal Article 2001 ftnio 2012-08-25T20:05:34Z Chemical properties of the water column were examined at the Indian Deep-sea Environment Experiment (INDEX) site in the Central Indian Basin (CIB), as a part of baseline studies prior to the benthic disturbance experiment for the environmental impact assessment of mining of polymetallic nodules. The study shows three equatorward moving water masses. (1) The Subsurface Salinity Maximum in the depth range 125-200 m, characterized by high salinity (34.74-34-77 psu) and oxygen minimum associated with weak maxima in nutrients. (2) The Deep Oxygen Maximum (234-245 mu M) in the depth range 250-750 m, associated with minima in nutrients and relatively high pH. 93) The Salinity Minimum Water (34.714-34.718 psu) corresponding to the Antarctic Intermediate Water (AAIW) at depths 800-1200 m in the density (sigma-theta) range 27.2-27.5. Progressive changes in these characteristics are attributed to mixing with waters above and below, and to oxidation of organic detritus en routs. Among the three water masses, the oxygen maximum water shows the lowest changes in its properties, which may suggest that this water mass is moving the fastest Article in Journal/Newspaper Antarc* Antarctic National Institute of Oceanography, India: Digital Repository Service (DRS@nio) Antarctic The Antarctic Indian |
institution |
Open Polar |
collection |
National Institute of Oceanography, India: Digital Repository Service (DRS@nio) |
op_collection_id |
ftnio |
language |
English |
topic |
water column chemical properties baseline studies water masses water properties summer |
spellingShingle |
water column chemical properties baseline studies water masses water properties summer DeSousa, S.N. Sardessai, S. RameshBabu, V. Murty, V.S.N. Gupta, G.V.M. Chemical characteristics of Central Indian Basin waters during the southern summer |
topic_facet |
water column chemical properties baseline studies water masses water properties summer |
description |
Chemical properties of the water column were examined at the Indian Deep-sea Environment Experiment (INDEX) site in the Central Indian Basin (CIB), as a part of baseline studies prior to the benthic disturbance experiment for the environmental impact assessment of mining of polymetallic nodules. The study shows three equatorward moving water masses. (1) The Subsurface Salinity Maximum in the depth range 125-200 m, characterized by high salinity (34.74-34-77 psu) and oxygen minimum associated with weak maxima in nutrients. (2) The Deep Oxygen Maximum (234-245 mu M) in the depth range 250-750 m, associated with minima in nutrients and relatively high pH. 93) The Salinity Minimum Water (34.714-34.718 psu) corresponding to the Antarctic Intermediate Water (AAIW) at depths 800-1200 m in the density (sigma-theta) range 27.2-27.5. Progressive changes in these characteristics are attributed to mixing with waters above and below, and to oxidation of organic detritus en routs. Among the three water masses, the oxygen maximum water shows the lowest changes in its properties, which may suggest that this water mass is moving the fastest |
format |
Article in Journal/Newspaper |
author |
DeSousa, S.N. Sardessai, S. RameshBabu, V. Murty, V.S.N. Gupta, G.V.M. |
author_facet |
DeSousa, S.N. Sardessai, S. RameshBabu, V. Murty, V.S.N. Gupta, G.V.M. |
author_sort |
DeSousa, S.N. |
title |
Chemical characteristics of Central Indian Basin waters during the southern summer |
title_short |
Chemical characteristics of Central Indian Basin waters during the southern summer |
title_full |
Chemical characteristics of Central Indian Basin waters during the southern summer |
title_fullStr |
Chemical characteristics of Central Indian Basin waters during the southern summer |
title_full_unstemmed |
Chemical characteristics of Central Indian Basin waters during the southern summer |
title_sort |
chemical characteristics of central indian basin waters during the southern summer |
publisher |
Pergamon |
publishDate |
2001 |
url |
http://drs.nio.org/drs/handle/2264/1535 |
geographic |
Antarctic The Antarctic Indian |
geographic_facet |
Antarctic The Antarctic Indian |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_rights |
Copyright [2001]. 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. |
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1766268020295991296 |