Acta Geographica Sinica ›› 2012, Vol. 67 ›› Issue (9): 1282-1290.doi: 10.11821/xb201209012

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Tidal Dynamics of Yangshan Harbor Sea Area and Its Response to the Project

YANG Zhongyong, CHENG Heqin, ZHU Jianrong, LI Shenduo   

  1. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
  • Received:2012-05-05 Revised:2012-05-29 Online:2012-09-20 Published:2012-09-20
  • Supported by:

    National Natural Science Foundation of China, No.40776056; Ministry of Science and Technology of China for Cooperation Program of China and Netherlands, No.40976055; Department of Overseas Training and Visiting of East China Normal University

Abstract: As the first offshore-port in China, the Yangshan Deep Water Port was set up along the Xiaoyangshan island chain, locating about 32 km away from the mainland of Shanghai. The port is shaped by three main fork channel closures and throw-filling land-making projects. The topography of this area was changed strongly by the large-scale man-made landform projects, which led to the response of tidal dynamics of Yangshan Harbor sea area. According to the observation data of tidal level and tidal flow before and after the project, we found the main tidal dynamics in Yangshan Harbor sea area are as follows. The amplitude of over-tide and compound tide are strengthened due to the project, showing a distinct non-linear effect. Backwater phenomena occurs in the central part of this sea area. The tidal wave shows that standing waves near the landline area cause a weak tidal circulation in the slack tidal period.

Key words: Yangshan deep-water harbor, tidal dynamics, non-linear effect, backwater, standing wave