Hydrography of fishing grounds of Arabian sea off Mangalore
Hydrographical parameters, namely temperature, salinity, dissolved oxygen and density of the fishing grounds off Mangalore extending over an area of ca 850 km² have been studied during March 1976 - March 1977. Twelve stations along three transects up to 50 m isobaths were located for sampling. The vertical distribution of temperature show three distinct phases, namely, a period of conspicuous variation, a short intermediary phase and a period of thermal stability. The dissolved oxygen of the bottom waters was drastically low during September. Salinity fluctuations were not considerable between months and depths. Dense waters existed over the shelf region, especially along the bottom during september and to a certain extent in october also. The distribution patterns of temperature, dissolved oxygen and density clearly indicate the movement of cold, dense, oxygen-poor- bottom waters from greater depths to the upper reaches of the shelf during September.
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Format: | article biblioteca |
Language: | English |
Published: |
1980
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Subjects: | Oceanography, hydrography, fishing grounds, fishery hydrography, Arabian sea, Mangalore, Karnataka, India, |
Online Access: | http://hdl.handle.net/1834/33511 |
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dig-aquadocs-1834-335112021-07-05T02:25:23Z Hydrography of fishing grounds of Arabian sea off Mangalore Maliel, M.M. Salian, P.K. Menon, N.R. Shetty, H.P.C. Oceanography hydrography fishing grounds fishery hydrography Arabian sea Mangalore Karnataka India Hydrographical parameters, namely temperature, salinity, dissolved oxygen and density of the fishing grounds off Mangalore extending over an area of ca 850 km² have been studied during March 1976 - March 1977. Twelve stations along three transects up to 50 m isobaths were located for sampling. The vertical distribution of temperature show three distinct phases, namely, a period of conspicuous variation, a short intermediary phase and a period of thermal stability. The dissolved oxygen of the bottom waters was drastically low during September. Salinity fluctuations were not considerable between months and depths. Dense waters existed over the shelf region, especially along the bottom during september and to a certain extent in october also. The distribution patterns of temperature, dissolved oxygen and density clearly indicate the movement of cold, dense, oxygen-poor- bottom waters from greater depths to the upper reaches of the shelf during September. 2021-06-24T17:30:17Z 2021-06-24T17:30:17Z 1980 article 0015-3001 http://hdl.handle.net/1834/33511 en application/pdf application/pdf 79-86 http://aquaticcommons.org/id/eprint/18092 12051 2015-10-01 16:16:17 18092 Society of Fisheries Technologists, India |
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Oceanography hydrography fishing grounds fishery hydrography Arabian sea Mangalore Karnataka India Oceanography hydrography fishing grounds fishery hydrography Arabian sea Mangalore Karnataka India |
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Oceanography hydrography fishing grounds fishery hydrography Arabian sea Mangalore Karnataka India Oceanography hydrography fishing grounds fishery hydrography Arabian sea Mangalore Karnataka India Maliel, M.M. Salian, P.K. Menon, N.R. Shetty, H.P.C. Hydrography of fishing grounds of Arabian sea off Mangalore |
description |
Hydrographical parameters, namely temperature, salinity, dissolved oxygen and density of the fishing grounds off Mangalore extending over an area of ca 850 km² have been studied during March 1976 - March 1977. Twelve stations along three transects up to 50 m isobaths were located for sampling. The vertical distribution of temperature show three distinct phases, namely, a period of conspicuous variation, a short intermediary phase and a period of thermal stability. The dissolved oxygen of the bottom waters was drastically low during September. Salinity fluctuations were not considerable between months and depths. Dense waters existed over the shelf region, especially along the bottom during september and to a certain extent in october also. The distribution patterns of temperature, dissolved oxygen and density clearly indicate the movement of cold, dense, oxygen-poor- bottom waters from greater depths to the upper reaches of the shelf during September. |
format |
article |
topic_facet |
Oceanography hydrography fishing grounds fishery hydrography Arabian sea Mangalore Karnataka India |
author |
Maliel, M.M. Salian, P.K. Menon, N.R. Shetty, H.P.C. |
author_facet |
Maliel, M.M. Salian, P.K. Menon, N.R. Shetty, H.P.C. |
author_sort |
Maliel, M.M. |
title |
Hydrography of fishing grounds of Arabian sea off Mangalore |
title_short |
Hydrography of fishing grounds of Arabian sea off Mangalore |
title_full |
Hydrography of fishing grounds of Arabian sea off Mangalore |
title_fullStr |
Hydrography of fishing grounds of Arabian sea off Mangalore |
title_full_unstemmed |
Hydrography of fishing grounds of Arabian sea off Mangalore |
title_sort |
hydrography of fishing grounds of arabian sea off mangalore |
publishDate |
1980 |
url |
http://hdl.handle.net/1834/33511 |
work_keys_str_mv |
AT malielmm hydrographyoffishinggroundsofarabianseaoffmangalore AT salianpk hydrographyoffishinggroundsofarabianseaoffmangalore AT menonnr hydrographyoffishinggroundsofarabianseaoffmangalore AT shettyhpc hydrographyoffishinggroundsofarabianseaoffmangalore |
_version_ |
1756079102302879744 |