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The nature and distribution of particulate matter in the Mandovi Estuary, central west coast of India

DRS at CSIR-National Institute of Oceanography

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Title The nature and distribution of particulate matter in the Mandovi Estuary, central west coast of India
 
Creator Kessarkar, P.M.
Rao, V.P.
Shynu, R.
Mehra, P.
Viegas, B.E.
 
Subject particulate matter
Mandovi Estuary
estuarine turbidity maximum
biogenic particles
 
Description Systematic seasonal variations of suspended particulate matter (SPM) along a 44-km transect of the Mandovi estuary reveal that the concentrations of SPM are low at river-end stations, increase generally seaward, and are highest at sea-end stations of the estuary. An estuarine turbidity maximum (ETM) occurs at sea-end stations during June-September when river discharge is high and also in February-May when river discharge is low. These are the two windiest times of year, the former associated with the southwest monsoon and the latter characterized by a persistent sea breeze. The salinity vs. SPM plot shows that high SPM is a seaward deposit and skewed landward. Suspended matter comprised of floccules, fecal pellets, and aggregates that consist of clay and biogenic particles occur everywhere in the estuary. Diatoms are the most common and are of marine type at the sea-end and freshwater dominated at river-end stations of the estuary. SPM is characterized by kaolinite- and smectite-rich clay mineral suites at the river- and sea-end stations, respectively. Smectite concentrations increase seawards with the increase in SPM content and are not influenced by salinity. Winddriven waves and currents and biogeochemical processes at the mouth of estuary likely play an important role in the formation of ETM in resuspension and transformation of SPM into floccules and aggregates and in their upkeep or removal
 
Date 2010-01-27T12:30:57Z
2010-01-27T12:30:57Z
2010
 
Type Journal Article
 
Identifier Estuaries and Coasts, vol.33(1); 30-44
no
http://drs.nio.org/drs/handle/2264/3541
 
Language en
 
Relation particulate.jpg
 
Rights An edited version of this paper was published by Coastal and Estuarine Research Federation. This paper is for R & D pupose and Copyright [2009] Coastal and Estuarine Research Federation. 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 Coastal and Estuarine Research Federation