Simulation of the trans-oceanic tsunami propagation due to the 1883 Krakatau volcanic eruption
Simulation of the trans-oceanic tsunami propagation due to the 1883 Krakatau volcanic eruption
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DOI：
10.5194/nhess-3-321-2003
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发表时间：
2003-01-01
影响因子：
4.6
通讯作者：
Lee, J. S.
中科院分区：
文献类型：
--
作者：
Choi, B. H.;Pelinovsky, E.;Lee, J. S.
1883年喀拉喀托火山爆发在印度尼西亚海岸产生了超过40米的破坏性海啸，超过36000人丧生。据报道，在印度洋、大西洋和太平洋距离震源很远的地方，都发生了与这一事件有关的海平面振荡。喀拉喀托海啸的许多表现形式的证据是激烈讨论的主题，有人认为其中一些与喀拉喀托火山爆发的海啸波的直接传播无关。本文详细分析了喀拉喀托事件的水动力部分。本文用射线追踪法和二维线性浅水模型对喀拉喀托火山爆发引起的海啸波在全球范围内的传播进行了数值研究。数值模拟的结果与海啸登记的可用数据进行了比较。
The 1883 Krakatau volcanic eruption has generated a destructive tsunami higher than 40m on the Indonesian coast where more than 36 000 lives were lost. Sea level oscillations related with this event have been reported on significant distances from the source in the Indian, Atlantic and Pacific Oceans. Evidence of many manifestations of the Krakatau tsunami was a subject of the intense discussion, and it was suggested that some of them are not related with the direct propagation of the tsunami waves from the Krakatau volcanic eruption. Present paper analyzes the hydrodynamic part of the Krakatau event in details. The worldwide propagation of the tsunami waves generated by the Krakatau volcanic eruption is studied numerically using two conventional models: ray tracing method and two- dimensional linear shallow-water model. The results of the numerical simulations are compared with available data of the tsunami registration.