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1 May 2009 Coastal Erosion Induced by Human Activities: A Northwest Bohai Sea Case Study
Zuo Xue, Aiping Feng, Ping Yin, Dongxing Xia
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Using mooring hydrodynamic observation, cross-shore profiles, and topographic-map and satellite-image comparisons, this study shows dramatic coastal erosion on the Qinhuangdao coast (northeast Bohai Sea, China) between 1986 and 2000, with an average retreat rate of 3.7 m/y. While the retreat rate during 1996–2003 decreased to 1.5 m/y, serious coastal erosion was found around river mouths, such as the Tang, Dai, Yang, Dapu, and Renzaohe Rivers, as well as Qilihai Lagoon, with the maximum of >7.0 m/y.

Sediment starvation induced by dams mainly caused this fast coastal retreat. Sediment flux of the Luan River, the dominant fluvial sediment source in the study area, declined to only 9.0% of the levels before the impoundment of two large dams in 1979. Sharply reduced sediment supply disrupted the stability of sediment transport as well as the beaches' self-recovery processes after storm surges. Coastal erosion was further intensified by coastal engineering and tourism activities.

Zuo Xue, Aiping Feng, Ping Yin, and Dongxing Xia "Coastal Erosion Induced by Human Activities: A Northwest Bohai Sea Case Study," Journal of Coastal Research 2009(253), 723-733, (1 May 2009).
Received: 29 October 2007; Accepted: 18 April 2008; Published: 1 May 2009

coastal retreat
Luan River
Qinhuangdao coast
sediment transport
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