Salinity Response to Seasonal Runoff in a Complex Estuarine System (Cochin Estuary, West Coast of India)
Vinita, J.; Shivaprasad, A.; Revichandran, C.; Manoj, N.T.; Muraleedharan, K.R., and Binzy, J., 2015. Salinity response to seasonal runoff in a complex estuarine system (Cochin estuary, west coast of India). The hydrographic conditions in Cochin estuary are investigated using longitudinal measuremen...
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| Veröffentlicht in: | Journal of coastal research 2015-07, Vol.31 (4), p.869-878 |
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| creator | Janardanan, Vinita Amaravayal, Shivaprasad Revichandran, C. Manoj, N.T. Muraleedharan, K.R. Jacob, Binzy |
| description | Vinita, J.; Shivaprasad, A.; Revichandran, C.; Manoj, N.T.; Muraleedharan, K.R., and Binzy, J., 2015. Salinity response to seasonal runoff in a complex estuarine system (Cochin estuary, west coast of India). The hydrographic conditions in Cochin estuary are investigated using longitudinal measurements of salinity profiles during a 1-year period. The estuary transformed from salt wedge conditions during the wet season to a partially or well-mixed state during the dry season. During high runoff months (June–September) and moderate runoff months (October–December and May), the salinity structure is a strong function of variations in river runoff, and the estuary responds coherently to episodic inputs of freshwater. However, during the period from January to April, the dependence of the salinity field on runoff was weakened by axial diffusivity. The salt transport was a balance between seaward flux induced by river runoff and tidally induced diffusive landward flux. The latter dominated in almost all sections along the estuary except at the upstream end, increasing the salt content of the estuary. The computed horizontal diffusion coefficients ranged from 5 to 704 m2 s−1. The flushing time of Cochin estuary ranged from 1 to 2.5 days during the wet season. During the dry season, the tide-driven flushing time was 8.7 days. The results represent an important benchmark against which numerical models should be measured and will be useful for developing a better understanding of biological and chemical distributions within the estuary. |
| doi_str_mv | 10.2112/JCOASTRES-D-13-00038.1 |
| format | Article |
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Salinity response to seasonal runoff in a complex estuarine system (Cochin estuary, west coast of India). The hydrographic conditions in Cochin estuary are investigated using longitudinal measurements of salinity profiles during a 1-year period. The estuary transformed from salt wedge conditions during the wet season to a partially or well-mixed state during the dry season. During high runoff months (June–September) and moderate runoff months (October–December and May), the salinity structure is a strong function of variations in river runoff, and the estuary responds coherently to episodic inputs of freshwater. However, during the period from January to April, the dependence of the salinity field on runoff was weakened by axial diffusivity. The salt transport was a balance between seaward flux induced by river runoff and tidally induced diffusive landward flux. The latter dominated in almost all sections along the estuary except at the upstream end, increasing the salt content of the estuary. The computed horizontal diffusion coefficients ranged from 5 to 704 m2 s−1. The flushing time of Cochin estuary ranged from 1 to 2.5 days during the wet season. During the dry season, the tide-driven flushing time was 8.7 days. The results represent an important benchmark against which numerical models should be measured and will be useful for developing a better understanding of biological and chemical distributions within the estuary.</description><identifier>ISSN: 0749-0208</identifier><identifier>EISSN: 1551-5036</identifier><identifier>DOI: 10.2112/JCOASTRES-D-13-00038.1</identifier><language>eng</language><publisher>Fort Lauderdale: The Coastal Education and Research Foundation</publisher><subject>Cochin estuary ; Diffusion ; Diffusion coefficient ; Dry season ; Dry seasons ; Ecosystems ; Estuaries ; Fishing industry ; Flushing ; flushing time ; Flux ; Fresh water ; Inlets ; Mathematical models ; Oceanography ; Pollutants ; Rainy season ; Rainy seasons ; RESEARCH PAPERS ; River ecology ; River flow ; Rivers ; Runoff ; Salinity ; Salts ; Seasons ; Stormwater ; Studies ; Surface runoff ; Water pollution ; Wet season ; Wind</subject><ispartof>Journal of coastal research, 2015-07, Vol.31 (4), p.869-878</ispartof><rights>Coastal Education & Research Foundation 2015</rights><rights>2015 Coastal Education and Research Foundation, Inc. [CERF]</rights><rights>Copyright Allen Press Publishing Services Jul 2015</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b416t-3b0d2a5e61d4295b7c7c73cff97ea4f367620b113b053bbacf2c5b3215f9b59f3</citedby><cites>FETCH-LOGICAL-b416t-3b0d2a5e61d4295b7c7c73cff97ea4f367620b113b053bbacf2c5b3215f9b59f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/43432900$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/43432900$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27922,27923,58015,58248</link.rule.ids></links><search><creatorcontrib>Janardanan, Vinita</creatorcontrib><creatorcontrib>Amaravayal, Shivaprasad</creatorcontrib><creatorcontrib>Revichandran, C.</creatorcontrib><creatorcontrib>Manoj, N.T.</creatorcontrib><creatorcontrib>Muraleedharan, K.R.</creatorcontrib><creatorcontrib>Jacob, Binzy</creatorcontrib><title>Salinity Response to Seasonal Runoff in a Complex Estuarine System (Cochin Estuary, West Coast of India)</title><title>Journal of coastal research</title><description>Vinita, J.; Shivaprasad, A.; Revichandran, C.; Manoj, N.T.; Muraleedharan, K.R., and Binzy, J., 2015. Salinity response to seasonal runoff in a complex estuarine system (Cochin estuary, west coast of India). The hydrographic conditions in Cochin estuary are investigated using longitudinal measurements of salinity profiles during a 1-year period. The estuary transformed from salt wedge conditions during the wet season to a partially or well-mixed state during the dry season. During high runoff months (June–September) and moderate runoff months (October–December and May), the salinity structure is a strong function of variations in river runoff, and the estuary responds coherently to episodic inputs of freshwater. However, during the period from January to April, the dependence of the salinity field on runoff was weakened by axial diffusivity. The salt transport was a balance between seaward flux induced by river runoff and tidally induced diffusive landward flux. The latter dominated in almost all sections along the estuary except at the upstream end, increasing the salt content of the estuary. The computed horizontal diffusion coefficients ranged from 5 to 704 m2 s−1. The flushing time of Cochin estuary ranged from 1 to 2.5 days during the wet season. During the dry season, the tide-driven flushing time was 8.7 days. The results represent an important benchmark against which numerical models should be measured and will be useful for developing a better understanding of biological and chemical distributions within the estuary.</description><subject>Cochin estuary</subject><subject>Diffusion</subject><subject>Diffusion coefficient</subject><subject>Dry season</subject><subject>Dry seasons</subject><subject>Ecosystems</subject><subject>Estuaries</subject><subject>Fishing industry</subject><subject>Flushing</subject><subject>flushing time</subject><subject>Flux</subject><subject>Fresh water</subject><subject>Inlets</subject><subject>Mathematical models</subject><subject>Oceanography</subject><subject>Pollutants</subject><subject>Rainy season</subject><subject>Rainy seasons</subject><subject>RESEARCH PAPERS</subject><subject>River ecology</subject><subject>River flow</subject><subject>Rivers</subject><subject>Runoff</subject><subject>Salinity</subject><subject>Salts</subject><subject>Seasons</subject><subject>Stormwater</subject><subject>Studies</subject><subject>Surface runoff</subject><subject>Water pollution</subject><subject>Wet 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Response to Seasonal Runoff in a Complex Estuarine System (Cochin Estuary, West Coast of India)</title><author>Janardanan, Vinita ; Amaravayal, Shivaprasad ; Revichandran, C. ; Manoj, N.T. ; Muraleedharan, K.R. ; Jacob, Binzy</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-b416t-3b0d2a5e61d4295b7c7c73cff97ea4f367620b113b053bbacf2c5b3215f9b59f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Cochin estuary</topic><topic>Diffusion</topic><topic>Diffusion coefficient</topic><topic>Dry season</topic><topic>Dry seasons</topic><topic>Ecosystems</topic><topic>Estuaries</topic><topic>Fishing industry</topic><topic>Flushing</topic><topic>flushing time</topic><topic>Flux</topic><topic>Fresh water</topic><topic>Inlets</topic><topic>Mathematical models</topic><topic>Oceanography</topic><topic>Pollutants</topic><topic>Rainy season</topic><topic>Rainy seasons</topic><topic>RESEARCH 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Binzy</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Salinity Response to Seasonal Runoff in a Complex Estuarine System (Cochin Estuary, West Coast of India)</atitle><jtitle>Journal of coastal research</jtitle><date>2015-07-01</date><risdate>2015</risdate><volume>31</volume><issue>4</issue><spage>869</spage><epage>878</epage><pages>869-878</pages><issn>0749-0208</issn><eissn>1551-5036</eissn><abstract>Vinita, J.; Shivaprasad, A.; Revichandran, C.; Manoj, N.T.; Muraleedharan, K.R., and Binzy, J., 2015. Salinity response to seasonal runoff in a complex estuarine system (Cochin estuary, west coast of India). The hydrographic conditions in Cochin estuary are investigated using longitudinal measurements of salinity profiles during a 1-year period. The estuary transformed from salt wedge conditions during the wet season to a partially or well-mixed state during the dry season. During high runoff months (June–September) and moderate runoff months (October–December and May), the salinity structure is a strong function of variations in river runoff, and the estuary responds coherently to episodic inputs of freshwater. However, during the period from January to April, the dependence of the salinity field on runoff was weakened by axial diffusivity. The salt transport was a balance between seaward flux induced by river runoff and tidally induced diffusive landward flux. The latter dominated in almost all sections along the estuary except at the upstream end, increasing the salt content of the estuary. The computed horizontal diffusion coefficients ranged from 5 to 704 m2 s−1. The flushing time of Cochin estuary ranged from 1 to 2.5 days during the wet season. During the dry season, the tide-driven flushing time was 8.7 days. The results represent an important benchmark against which numerical models should be measured and will be useful for developing a better understanding of biological and chemical distributions within the estuary.</abstract><cop>Fort Lauderdale</cop><pub>The Coastal Education and Research Foundation</pub><doi>10.2112/JCOASTRES-D-13-00038.1</doi><tpages>10</tpages></addata></record> |
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| subjects | Cochin estuary Diffusion Diffusion coefficient Dry season Dry seasons Ecosystems Estuaries Fishing industry Flushing flushing time Flux Fresh water Inlets Mathematical models Oceanography Pollutants Rainy season Rainy seasons RESEARCH PAPERS River ecology River flow Rivers Runoff Salinity Salts Seasons Stormwater Studies Surface runoff Water pollution Wet season Wind |
| title | Salinity Response to Seasonal Runoff in a Complex Estuarine System (Cochin Estuary, West Coast of India) |
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