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Salt intrusion study in Cochin estuary - using empirical models

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Title Salt intrusion study in Cochin estuary - using empirical models
 
Creator Jacob, Binzy
Revichandran, C.
Kumar, Naveen K.R.
 
Subject Salinity intrusion length
Empirical models
Tidal excursion
Salinity stratification
 
Description 304-313
Intensive
measurements of salt intrusion are taken at high and low waters during spring
and neap tide for each month respectively from June 2007 to May 2008. Salt
intrusion length at high water varied from 10 km in monsoon 2008 to more than
40 km in pre monsoon 2007. Salinity intrusion mostly depends on the fresh water
discharge rather than spring-neap tidal oscillations. Stratification parameter
of salinity varied with the distance along the estuary, tide and freshwater
discharge indicating that the Cochin
estuary experiences a transition from partially or well mixed estuary during
post and pre monsoon to a strongly stratified estuary during the monsoon
season. Instead of undergoing the entire process of data collection of
all the parameters, for a prolonged period, which is quite expensive and time
consuming, certain predictive models are preferred. A predictive model uses
parameters which are measurable and quantifiable variables and determined
through empirical relations. Four empirical models have been applied to the Cochin estuary in the
present study to identify the most suitable model for predicting the salt
intrusion length. Comparison of the obtained results indicate that the model of
Van der Burgh (1972) is the most suitable empirical model for prediction of the
salinity intrusion length in the Cochin estuary with the least RMS error of
(6.1) and MAE of (4.8).


 
Date 2013-07-12T09:58:42Z
2013-07-12T09:58:42Z
2013-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/19659
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.42(3) [June 2013]