Testing a 1-D Analytical Salt Intrusion Model and its Predictive Equations in Malaysian Estuaries = Test d’un modèle analytique 1-D d’intrusion marine et de ses équations prédictives dans des estuaires de Malaisie
A fully analytical 1-D salt intrusion model which is simple to implement and requiring minimal data, was tested in six previously un-surveyed Malaysian estuaries (Kurau, Perak, Bernam, Selangor, Muar and Endau). The data required for this method can be collected during a single day of observations....
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| Main Authors: | , , , |
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| Format: | Article |
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Taylor & Francis
2015
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| Online Access: | http://dx.doi.org/10.1080/02626667.2014.889832 http://dx.doi.org/10.1080/02626667.2014.889832 http://umpir.ump.edu.my/9353/1/fkasa-2015-gisen-Testing%20A%201-D%20Analytical.pdf |
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| Summary: | A fully analytical 1-D salt intrusion model which is simple to implement and requiring minimal data, was tested in six previously un-surveyed Malaysian estuaries (Kurau, Perak, Bernam, Selangor, Muar and Endau). The data required for this method can be collected during a single day of observations. Site measurements were conducted in these estuaries during the dry season (June-August 2012 and February-March 2013) near spring tide. Data on cross-sections (by echosounding), water levels (by pressure loggers) and salinity (by moving boat) were collected as input to the 1-D salt intrusion model. This paper demonstrates a good fit between the simulated and observed salinity distribution for all six estuaries. Additionally, the two calibration parameters (the Van der Burgh’s coefficient and the boundary condition for the dispersion) were compared with the existing predictive equations. Since gauging stations were only present in some nested catchments in the drainage basins, the river discharge had to be up-scaled to represent the total discharge contribution of the catchments. Subsequently, the correspondence between the calibration coefficients and the predictive equations was good, particularly in view of the uncertainty in the river discharge data used. This confirms that the predictive salt intrusion model is valid for the cases studied in Malaysia. The model provides a reliable predictive instrument which the water authority of Malaysia can use for making decisions on water abstractions or dredging. |
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