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Water 2017, 9(5), 321; doi:10.3390/w9050321

Estimation of Residence Time and Transport Trajectory in Tieshangang Bay, China

1,2,3
,
1
,
1,2,3,* and 1,2,3,4
1
School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China
2
Hunan Province Key Laboratory of Water, Sediment Sciences & Flood Hazard Prevention, Changsha 410114, China
3
International Research Center of Water Science & Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China
4
Department of Geography, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Karl-Erich Lindenschmidt and Peggy A. Johnson
Received: 11 January 2017 / Revised: 25 April 2017 / Accepted: 26 April 2017 / Published: 2 May 2017
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Abstract

The pollutant residence time and transport trajectory in Tieshangang Bay are considered to have significant effects on deteriorating water quality. To understand the pollutant transport behaviors in Tieshangang Bay, we developed a combination model (MIKE 21 FM) of the hydrodynamic module and particle tracking module. Simulation results suggest that the water velocities in the west and east troughs (near the entrance of the bay) are distinctly higher than any other areas. Meanwhile, small semi-enclosed bays adjacent to the shoreline could affect local water flow patterns, thereby causing gyres within them. The residence time of pollutants in Tieshangang Bay is significantly affected by seasonal variations (i.e., the residence time of pollutants in Tieshangang Bay in winter is less than that in summer). The results of transport trajectory simulations reveal that the bay head is a slow flushing zone, while the entrance of the bay (west trough) can be identified as a fast flushing zone. View Full-Text
Keywords: residence time; transport trajectory; Tieshangang bay; pollutant residence time; transport trajectory; Tieshangang bay; pollutant
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Jiang, C.; Liu, Y.; Long, Y.; Wu, C. Estimation of Residence Time and Transport Trajectory in Tieshangang Bay, China. Water 2017, 9, 321.

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