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首页> 外文会议>International offshore and polar engineering conference;ISOPE-2009 >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年印度洋海啸期间引起的东斯里兰卡最大波高和淹没距离的解析估计

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摘要

The analytical convolution solution of 1-D fully nonlinear shallowwater equations derived by Carrier et al. (2003) is applied to estimatethe maximum wave height and the inundation distance during the 2004Indian Ocean Tsunami. The applied area is in the east coast of SriLanka with latitude between 6.8°N and 8°N. The offshore condition forthe wave form and vertically-averaged flow velocity are obtained bysolving the linear version of the COMCOT tsunami model and has beenverified by comparing with the record at Maldives.By taking the nearshore shelf slope as the constant bottom slopefor the analytical solution, the inundation distance in the applied area isbetween 500m and 2.75 km, and the maximum wave height is between4.46m and 6.63m. The max tsunami height calculated by the presentmethod agrees very well with the in-situ measurement. Therefore, thismethod is a very useful tool for tsunami early warning by quicklyestimating if the max wave height is higher than the seawall or thebreakwater. The max inundation distance calculated by the analyticconvolution solution also has reasonable agreement with the fieldsurvey, but the value of the in-situ investigation scatters widely whichsuggests the detailed local topography play an important role. Differentmethod for the determination of the bottom slope is also tested and theresult show that the slope should be based on the bathymetry nearshore.
机译：Carrier等人推导的一维全非线性浅水方程的解析卷积解法。 （2003）被用来估计2004年印度洋海啸期间的最大波高和淹没距离。应用区域在斯里兰卡东海岸，纬度在6.8°N和8°N之间。通过求解COMCOT海啸模型的线性形式，获得了波浪形和垂直平均流速的海上条件，并通过与马尔代夫的记录进行了比较进行了验证。应用区域的淹没距离在500m至2.75 km之间，最大波高在4.46m至6.63m之间。通过本方法计算的最大海啸高度与现场测量非常吻合。因此，通过快速估计最大波浪高度是否高于海堤或防波堤，该方法对于海啸预警是非常有用的工具。解析卷积法计算得到的最大淹没距离与现场调查也有合理的吻合，但是现场调查的价值分散很大，这说明详细的局部地形起着重要的作用。还测试了确定底部斜率的不同方法，结果表明该斜率应基于近海的测深法。

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