Storm Surge Forecasting Model in Ocean University of Qingdao

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Storm Surge Forecasting Model in Ocean University
of Qingdao
The Second OMISAR Workshop on Ocean
Models October 1999, Beijing

• Wensheng Jiang, Shizuo Feng,
• Wenxin Sun, Jingyong Wang
• Institute of Physical Oceanography,
• Ocean University of Qingdao
• 266003, Qingdao, P. R. China

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1. Introduction 2. Brief review of the storm
surge study in OUQD 2.1 Pioneering period
(1971--1976) Establish storm surge
research group Round-the-Bohai-Sea
survey and data collection Empirical
methods, the ultra-shallow sea storm surge
theory 2.2 Developing period (1977--1985)
Fully participate in the following research
activities Establish several
organizations of storm surges research
Dynamical mechanism and numerical simulation
The first monograph on storm surge 2.3
Harvesting period (1986-- ) The first
generation of numerical forecasting model
The second generation of numerical forecasting
model The application in marine
engineering. 3. Typhoon surge model and its
application 4. Cylindrical coordinates moving
boundary model 5. Conclusions
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1. Introduction
Storm surge is a serious natural disaster coming
from the sea. The storm surge is usually caused
by sub-tropical or tropical storm. In China Bohai
Sea there is a special kind of storm surge--wind
surge which is caused by cold front and strong
wind.
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3. Typhoon surge model and its application 3.1
The description of the model Two sets of
grids are used fine one and the coarse one
The hydrodynamic equation
The boundary conditions Fixed boundary
Vn0 Open boundary 1 Coarse grid 2
Fine gridDirichlet boundary condition
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The meteorological forcing
3.2 The numerical scheme
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Typhoon 7303
Typhoon 5612
Typhoon 7613
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The time series of the water elevation during
Typhoon 5612 solid line observed dashed line
simulated
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4. Cylindrical coordinates moving boundary model
4.1 The idea of determination of the moving
boundary The fluid kinematics is
strictly followed H(xb ,yb ,t)0
4.2 The description of the model
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4.3 The numerical scheme 4.4 The model results
The comparison between different models
The U, V profile at the coast at the extreme
flooding time