Shivaprasad,Amaravayal; Dr.Revichandran,C(Cochin University Of Science And Technology, May , 2013)
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Abstract:
Hydrodynamic characteristics of an estuary resulting from
interaction of tide and river runoff are important since problems
regarding flood, salinity intrusion, water quality, ecosystem and sedimentation are ubiquitous. The present study focuses on such
hydrodynamic aspects in the Cochin estuary.
Most of the estuaries that come under the influence of Indian
Summer Monsoon and for which the salinity is never in a steady
state at any time of the year are generally shallow and convergent,
i.e. the width decreases rapidly from mouth to head. In contrast,
Cochin estuary is wider towards the upstream and has no typical
river mouth, where the rivers are joining the estuary along the length
of its channel .Adding to the complexity it has dual inlets and the
tidal range is 1 m which is lower than other Indian estuaries along
west coast. These typical physical features lead to its unique
hydrodynamic characteristics. Therefore the thesis objectives are: I)
to study the influence of river runoff on tidal propagation using
observations and a numerical model ii) to study stratification and
property distributions in Cochin estuary iii) to understand salinity
distributions and flushing characteristics iv) to understand the
influence of saltwater barrage on tides and salinity v) To evaluate
several classification schemes for the estuary
Description:
National Institute of Oceanography, Regional centre, Cochin- 18