alexa Tide and Mixing Characteristics in Sundarbans Estuarine River System
ISSN: 2157-7587

Hydrology: Current Research
Open Access

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Research Article

Tide and Mixing Characteristics in Sundarbans Estuarine River System

Goutam KS1*, Tanaya D1, Anwesha S2, Sharanya C1and Meenakshi C3
1School of Oceanographic Studies, Jadavpur University, Kolkata 700032, West Bengal, India
2Department of Mathematics, Jadavpur University, Kolkata 700032, West Bengal, India
3Basanti Devi College, Kolkata 700029, West Bengal, India
Corresponding Author : Goutam KS
School of Oceanographic Studies
Jadavpur University, Kolkata 700032
West Bengal, India
Tel: 919831282057
E-mail: [email protected]
Received: April 21, 2015 Accepted: May 06, 2015 Published: May 08, 2015
Citation: Goutam KS, Tanaya D, Anwesha S, Sharanya C, Meenakshi C (2015) Tide and Mixing Characteristics in Sundarbans Estuarine River System. Hydrol Current Res 6: 204. doi:10.4172/2157-7587.1000204
Copyright: © 2015 Goutam KS, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Sundarbans Estuarine System (SES, 21.25°-22.5° N and 88.25°-89.5° E), comprising the southernmost part of the Indian portion of the Ganga-Bramhaputra delta bordering the Bay of Bengal, is India’s largest monsoonal, macrotidal delta front system. Sundarbans Estuarine Programme (SEP), the first comprehensive observational programme to study tidal as well as salinity features was conducted during 18-21 March, 2011 (Equinoctial spring phase). The main objective of this program was to monitor tides and salinity characteristics within the SES. Out of 30 observation stations, spread over more than 3,600 sq km covering seven inner estuaries, we have chosen river Jagaddal, which is connected with Saptamukhi East Gulley (SEG) in the West and river Thakuran in the East, due to the fact that the station Indrapur situated on this river at location very close to Bay of Bengal represents the condition at the mouth of all seven estuaries. Tidal elevation, salinity, bathymetry and vertical profile of salinity using CTD were measured during the observation period. Observed current data collected from different sources have been used for comparison with computed tidal current. Finally, the estuarine current, bottom drag coefficient and gradient Richardson number have also been computed. Computed values of these parameters have analyzed for interpreting variations for tidal, current and mixing feature prevailing in the estuary.

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