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Application of a hydrodynamic water quality model in Sungai Johor estuary

Ismail, Maznah (2009) Application of a hydrodynamic water quality model in Sungai Johor estuary. Masters thesis, Universiti Teknologi Malaysia, Faculty of Civil Engineering.

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Sungai Johor estuary is a vital water body in the south of Johor and greatly affects the water quality in the Johor Straits. In the development of the hydrodynamic and water quality models for Sungai Johor estuary, the Environmental Fluid Dynamics Code (EFDC) model was selected. In this application, the EFDC hydrodynamic model was configured to simulate time varying surface elevation, velocity, salinity, and water temperature. The EFDC water quality model was configured to simulate dissolved oxygen (DO), dissolved organic carbon (DOC), chemical oxygen demand (COD), ammoniacal nitrogen (NH3-N), nitrate nitrogen (NO3-N), phosphate (PO4), and Chlorophyll a. The hydrodynamic and water quality model calibration was performed utilizing a set of site specific data acquired in January 2008. The simulated water temperature, salinity and DO showed good and fairly good agreement with observations. The calculated correlation coefficients between computed and observed temperature and salinity were lower compared with the water level. Sensitivity analysis was performed on hydrodynamic and water quality models input parameters to quantify their impact on modeling results such as water surface elevation, salinity and dissolved oxygen concentration. It is anticipated and recommended that the development of this model be continued to synthesize additional field data into the modeling process.

Item Type:Thesis (Masters)
Additional Information:Thesis (Sarjana Kejuruteraan (Hydraulics dan Hydrology)) - Universiti Teknologi Malaysia, 2009; Supervisor : Dr. Noor Baharim bin Hashim
Uncontrolled Keywords:water quality, hydrodynamic, case study : Sungai Johor estuary
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TC Hydraulic engineering. Ocean engineering
Divisions:Civil Engineering
ID Code:11094
Deposited By: Ms Zalinda Shuratman
Deposited On:25 Nov 2010 05:53
Last Modified:30 Jul 2012 01:20

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