Seasonal variations of some hydrographical parameters in a tidal creek opening into the Bay of Bengal

A. Mitra, K.C. Patra, R.C. Panigrahy

Abstract



Seasonal variations of some hydrographical parameters in a tidal creek which opens into the Bay of Bengal near Digha, West Bengal, were studied for a period of two years from July 1985 to June 1987. The water temperature was mostly influenced by the seasonal variability of atmospheric temperature rather than the flow of sea water into and from the creek system. Salinity variations were more conspicuous (less than 1 to 25 ppt.) than the other parameters. The adjoining land drainage was the most dominant factor controlling the salinity distribution. It increased the dissolved oxygen concentration but decreased the pH. Light penetration was very low during monsoon months and the level of transparency increased gradually from January till June

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