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首页> 外文会议>International offshore and polar engineering conference >Analytical Estimation of the Maximum Wave Height and the Inundation Distance in East Sri-Lanka Induced during the 2004 Indian Ocean Tsunami
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Analytical Estimation of the Maximum Wave Height and the Inundation Distance in East Sri-Lanka Induced during the 2004 Indian Ocean Tsunami

机译：2004年印度洋海啸期间东斯里兰卡最大波高和淹没距离的分析估计

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摘要

The analytical convolution solution of 1-D fully nonlinear shallow water equations derived by Carrier et al. (2003) is applied to estimate the maximum wave height and the inundation distance during the 2004 Indian Ocean Tsunami. The applied area is in the east coast of Sri Lanka with latitude between 6.8°N and 8°N. The offshore condition for the wave form and vertically-averaged flow velocity are obtained by solving the linear version of the COMCOT tsunami model and has been verified by comparing with the record at Maldives. By taking the nearshore shelf slope as the constant bottom slope for the analytical solution, the inundation distance in the applied area is between 500m and 2.75 km, and the maximum wave height is between 4.46m and 6.63m. The max tsunami height calculated by the present method agrees very well with the in-situ measurement. Therefore, this method is a very useful tool for tsunami early warning by quickly estimating if the max wave height is higher than the seawall or the breakwater. The max inundation distance calculated by the analytic convolution solution also has reasonable agreement with the field survey, but the value of the in-situ investigation scatters widely which suggests the detailed local topography play an important role. Different method for the determination of the bottom slope is also tested and the result show that the slope should be based on the bathymetry nearshore.
机译：载体等人衍生1-D全非线性浅水方程的分析卷积解。 （2003）应用于估计2004年印度洋海啸期间的最大波浪高度和淹没距离。所应用的面积位于斯里兰卡东海岸，纬度在6.8°N和8°N之间。通过求解Comcot海啸模型的线性版本获得波形和垂直平均流速的离岸条件，并通过与马尔代夫的记录进行比较来验证。通过将近岸货架斜率作为分析液的恒定底部斜率，所施加面积的泛距在500米至2.75千米之间，最大波浪高度为4.46米和6.63米。通过本方法计算的MAX Tsunami高度与原位测量非常好。因此，该方法是通过快速估计最大波浪高度高于海堤或防波堤来进行海啸预警的非常有用的工具。通过分析卷积解决方案计算的最大淹没距离也与现场调查协议合理，但原位调查的价值普遍认为，暗示了详细的本地地形发挥着重要作用。还测试了用于确定底斜率的不同方法，结果表明斜坡应基于浴近孔。

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