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arXiv physics/0611140physics.flu-dynphysics.ao-ph
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三维线性和非线性海啸生成模型的比较

Comparison between three-dimensional linear and nonlinear tsunami generation models

Youen Kervella, Denys Dutykh, Frédéric Dias

摘要:

海啸生成的模拟是理解海啸的一个重要阶段。对于由水下地震产生的海啸,它涉及到海底运动的建模以及由此产生的运动的水上面it.A三维水运动的各种模型之间的比较,从线性理论到完全非线性理论,进行。发现对于大多数事件,线性理论是足够的。然而,在某些情况下,需要更复杂的理论。此外,它表明,被动的方法,其中的海底变形被简单地转换到海洋表面并不总是等同于主动的方法,其中的底部运动被考虑在内,即使变形是瞬时的。

英文摘要:

The modeling of tsunami generation is an essential phase in understanding tsunamis. For tsunamis generated by underwater earthquakes, it involves the modeling of the sea bottom motion as well as the resulting motion of the water above it. A comparison between various models for three-dimensional water motion, ranging from linear theory to fully nonlinear theory, is performed. It is found that for most events the linear theory is sufficient. However, in some cases, more sophisticated theories are needed. Moreover, it is shown that the passive approach in which the seafloor deformation is simply translated to the ocean surface is not always equivalent to the active approach in which the bottom motion is taken into account, even if the deformation is supposed to be instantaneous.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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