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Title: Inlet Hydraulics of Chilika Lagoon
Authors: Sahoo, R.K.
Mohanty, P. K.
Samal, R N
Keywords: Chilika lagoon;Inlet hydraulics;Repletion coefficient;Impedance
Issue Date: Jan-2016
Publisher: NISCAIR-CSIR, India
Abstract: Inlet hydraulics of Chilika Lagoon is studied using various observed inlet parameters (tide, current and morphology) and computing parameters such as hydraulic radius, inlet impedance, King’s inlet frequency and friction, maximum channel velocity, phase lag and repletion coefficient during 2009 for spring and neap tide conditions. It is revealed that maximum water level variation in the lagoon occurs during May and is associated with wind –tide interaction in the absence of freshwater discharge. Results indicate ebb dominance of inlet during wet period (July to December) and flood dominance during dry period (February to May) of the lagoon. Period of maximum ebb current (July) coincides with the period of maximum fresh water discharge while period of maximum flood current (May) coincides with the period of maximum momentum input and percentage of sea distribution. Ebb dominance of the inlet is also revealed through computation and analysis of hydraulic parameters, primarily repletion values. Keeping in view the role of inlet hydraulics on the cotemporary phase of lagoon transformation, integration of inlet management into the overall ecosystem management of the lagoon is suggested.
Page(s): 137-144
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.45(01) [January 2016]

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