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Environments 2014, 1(1), 107-123; doi:10.3390/environments1010107

Pollutant Flux Estimation in an Estuary Comparison between Model and Field Measurements

1
Department of Civil Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
2
Department of Civil and Environmental Engineering, University of Virginia, Charlottesville, VA 22901, USA
3
Department of Leisure and Tourism Management, Shu-Te University, Kaohsiung 82445, Taiwan
4
Taiwan Branch, MWH Americas Inc., Taipei 10695, Taiwan
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 17 April 2014 / Revised: 30 July 2014 / Accepted: 15 August 2014 / Published: 26 August 2014
(This article belongs to the Special Issue Security and Resilience of Terrestrial and Freshwater Environments)
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Abstract

This study proposes a framework for estimating pollutant flux in an estuary. An efficient method is applied to estimate the flux of pollutants in an estuary. A gauging station network in the Danshui River estuary is established to measure the data of water quality and discharge based on the efficient method. A boat mounted with an acoustic Doppler profiler (ADP) traverses the river along a preselected path that is normal to the streamflow to measure the velocities, water depths and water quality for calculating pollutant flux. To know the characteristics of the estuary and to provide the basis for the pollutant flux estimation model, data of complete tidal cycles is collected. The discharge estimation model applies the maximum velocity and water level to estimate mean velocity and cross-sectional area, respectively. Thus, the pollutant flux of the estuary can be easily computed as the product of the mean velocity, cross-sectional area and pollutant concentration. The good agreement between the observed and estimated pollutant flux of the Danshui River estuary shows that the pollutant measured by the conventional and the efficient methods are not fundamentally different. The proposed method is cost-effective and reliable. It can be used to estimate pollutant flux in an estuary accurately and efficiently. View Full-Text
Keywords: estuary; maximum velocity; measurement; pollutant flux; water quality estuary; maximum velocity; measurement; pollutant flux; water quality
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MDPI and ACS Style

Chen, Y.-C.; Lung, W.-S.; Yang, H.-C.; Chen, B.-J.; Chen, C.-H. Pollutant Flux Estimation in an Estuary Comparison between Model and Field Measurements. Environments 2014, 1, 107-123.

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