A Theoretical Comparison of Tsunamis from Dislocations and Landslides
A Theoretical Comparison of Tsunamis from Dislocations and Landslides
复制标题
错位和山体滑坡引发海啸的理论比较
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
C. Synolakis
中科院分区：
文献类型：
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作者：
E. Okal;C. Synolakis
摘要：我们使用简单的物理模型来评估和比较由地震位错和水下滑坡产生的海啸波的能量的数量级。我们得出结论，这两种源可以产生总能量相当的海啸。然而，滑塌源本质上是偶极的，这导致了远场的低频缺陷。这些简单的结论证实了1998年巴布亚新几内亚海啸是由水下滑坡引起的解释。
Abstract— We use simple physical models to evaluate and compare the orders of magnitude of the energy generated into a tsunami wave by seismic dislocations and underwater slumps. We conclude that the two sources can generate tsunamis of comparable total energy. However, the slumping source is shown to be fundamentally dipolar in nature, which results in a low-frequency deficiency in the far-field. These simple conclusions corroborate the interpretation of the 1998 Papua New Guinea tsunami as being generated by an underwater slump.