Freshwater flushing time scales of the Vashishti Estuary, west coast of India

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dc.contributor.author DineshKumar, P.K.
dc.contributor.author Sarma, R.V.
dc.contributor.author Zingde, M.D.
dc.date.accessioned 2009-01-10T11:33:48Z
dc.date.available 2009-01-10T11:33:48Z
dc.date.issued 1999
dc.identifier.citation International Journal of Environmental Studies, Vol.56; 313-323p.
dc.identifier.uri http://drs.nio.org/drs/handle/2264/1820
dc.description.abstract Results are presented for the Vashishti estuary, Kerala, India to evaluate its freshwater flushing time scales based on 8 sets of observations of longitudinal salinity distributions. The results of the flushing time using the fraction of freshwater method indicated that the load retained in the estuary after infinite number of tidal cycles was 44 to 54 times the load introduced per tidal cycles during premonsoon and 47 to 61 times during postmonsoon periods. Calculations on longitudinal diffusion coefficient (K) showed values ranging from 12 to 271 m sup(2) sec sup(-1) with smaller values occurring in the month region. Results of the effective diffusivity indicated that changes in K and mixing length together can cause a decrease in flushing time which is in general agreement with the observed dependence of the flushing time from the river discharge rate.
dc.language.iso en
dc.publisher Taylor and Francis
dc.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.
dc.subject Estuarine dynamics
dc.subject Flushing time
dc.subject Brackishwater pollution
dc.subject River discharge
dc.subject Water mixing
dc.title Freshwater flushing time scales of the Vashishti Estuary, west coast of India
dc.type Journal Article


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