Qinshan Nuclear Power Station is located in the Haiyan County of Zhejiang Province in east China. The warm water
from their cooling systems is discharged into the Hangzhou Bay directly which will affect the ecosystem of coastal area
in the bay. To study the influence of warming effect from the thermal discharge of the Qinshan Nuclear Power Station
Phase2 and Phase3, the remote sensing image of the marine airborne multi-spectrum scanner (MAMS), the numerical
modeling based COHERENS (A coupled Hydrodynamical Ecological Model for Regional Shelf seas) and shipboard
water column measurements are all applied to explore the spatial and temporal distribution of the warm water. In order to
get accurate boundary conditions, a larger area was simulated firstly to provide hydrodynamic parameter for the
modeling area in the numerical simulation. From the remote sensing image, the numerical simulation and field
observations, we can conclude that the thermal effluent from the Qinshan Phase2 and Phase3 cooling systems just
influences coastal water on a small scale.
Hangzhou Bay in China is an important conveyor transporting contaminants from surrounding cities in Yangtze Delta. A
numerical hydrodynamic model based on COHERENS (Coupled Hydrodynamical Ecological model for Regional Shelf
seas) has been employed to simulate the pollutant transport trajectory and to obtain the retention ratio in the Bay. The
forcing of the model include tides and freshwater. The influence of wind was explored by imposing the QSCAT/NCEP
Blend Wind data into the numerical simulation.
The bay was divided into 8 subdomains (S1-S8) and the simulation was performed in two months: March (the dry
season) and July (the wet season). Two sets of numerical experiment were carried out with or without wind. Results
indicated that wind plays a more important role on pollutant transport in the wet season than in the dry season. The
influences of wind on the pollutant transport in 8 subdomians are different, especially in wet season. The retention ratio
of S1 is most significantly affected by wind compared with other subdomains.
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