PROPAGATION OF OBLIQUELY INCIDENT TSUNAMIS ON A SLOPE PART I: AMPLIFICATION OF TSUNAMIS ON A CONTINENTAL SLOPE
PROPAGATION OF OBLIQUELY INCIDENT TSUNAMIS ON A SLOPE PART I: AMPLIFICATION OF TSUNAMIS ON A CONTINENTAL SLOPE
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斜入射海啸在斜坡上的传播 第一部分：海啸在大陆斜坡上的放大
DOI：
10.1142/s0578563499000103
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发表时间：
1999
影响因子：
2.4
通讯作者：
N. Shuto
中科院分区：
文献类型：
--
作者：
S. Koshimura;F. Imamura;N. Shuto
基于线性浅水波理论，导出了斜入射大陆坡海啸的解析解。大陆坡模型包括一个有限的恒定坡度和一个深度均匀的底部，在海岸线上有一个垂直的斜坡墙。由于垂直壁的存在，除了汇合超几何函数M外，另一个函数也可以作为斜坡上的基本解之一。在此基础上，根据海啸的入射条件，讨论了海啸在大陆坡上的放大特性。放大的幅度可以预测与波入射的几个参数，如，入射角和相对入射波长的地形。特别是，当海啸几乎平行于斜坡入射时，我们发现，存在着独特的放大特定参数表征入射波。存在的影响…
A new analytical solution of tsunami which is obliquely incident on a continental slope is derived based on the linear shallow water wave theory. The model of a continental slope consists of a finite constant slope and a bottom of uniform depth and has a vertical wall at the shoreline. Because of the existence of the vertical wall, another function can be taken as one of the fundamental solutions on a slope in addition to the confluent hypergeometric function M. Based on the solution obtained, the characteristics of tsunami amplification on a continental slope are discussed in terms of the conditions of the incidence. The magnitude of the amplification can be predicted with several parameters of wave incidence, such as, the incident angle and the relative incident-wave length to the topography. Especially, when a tsunami is incident almost parallel to the slope, we found that there exists distinctive amplifications for particular parameters characterizing the incident wave. The effect of the existence of ...