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Acta Oceanologica Sinica

, 30:45 | Cite as

The influence of the Three-Gorges Dam on hydrographic and hydrodynamic conditions of the East China Sea

  • Xiaopeng Fan
  • Feng Zhou
  • Xueen Chen
  • Daji Huang
  • Thomas PohlmannEmail author
Article

Abstract

A fine resolution model has been applied to get more insight into the effects of a modified runoff due to the Three-Gorges-Dam (TGD) on the East China Sea (ECS). The region of interest was confined to the offshore area in the vicinity of the Changjiang River. To the east, it extended up to the area southwest of Cheju Island. The model was used to evaluate the effect of a modified runoff on the water properties of the adjacent regions like the Changjiang diluted water (CDW) and the Zhoushan Fishing Ground. The sensitivity of the ECS to a modified Changjiang runoff was explored firstly by sensitivity studies and secondly by experiments based on historical runoff records and water management plans of the TGD. These experiments led to the general conclusion that the most affected area by runoff is located close to the Changjiang River mouth. The area of influence has an extension of about 150 km×150 km. In the realistic experiment, the related anomalies reached their maximum value in early summer (May). In normal years the related salinity anomalies can get to as large as 2.

Key words

Three-Gorges-Dam surface salinity anomalies stratification East China Sea 

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Copyright information

© The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Xiaopeng Fan
    • 1
  • Feng Zhou
    • 1
    • 4
  • Xueen Chen
    • 2
  • Daji Huang
    • 1
    • 4
  • Thomas Pohlmann
    • 3
    Email author
  1. 1.State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of OceanographyState Oceanic AdministrationHangzhouChina
  2. 2.Institute of Physical OceanographyOcean University of ChinaQingdaoChina
  3. 3.Institute of OceanographyUniversity of HamburgHamburgGermany
  4. 4.Department of Ocean Science and EngineeringZhejiang UniversityHangzhouChina

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