文章基本信息

标题：Reciprocal Green's functions and the quick forecast of submarine landslide tsunamis
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作者：Chen, Guan-Yu ; Liu, Chin-Chih ; Wijetunge, Janaka J. 等
期刊名称：Natural Hazards and Earth System Sciences
电子版ISSN：2195-9269
出版年度：2020
卷号：20
期号：3
页码：771-781
DOI：10.5194/nhess-20-771-2020
语种：English
出版社：Copernicus Publications
摘要：Although tsunamis generated by submarine mass failure arenot as common as those induced by submarine earthquakes, sometimes thegenerated tsunamis are higher than a seismic tsunami in the area close tothe tsunami source, and the forecast is much more difficult. In the presentstudy, reciprocal Green's functions (RGFs) are proposed as a useful tool in theforecast of submarine landslide tsunamis. The forcing in the continuityequation due to depth change in a landslide is represented by the temporalderivative of the water depth. After a convolution with reciprocalGreen's function, the tsunami waveform can be obtained promptly. Thus,various tsunami scenarios can be considered once a submarine landslidehappens, and a useful forecast can be formulated. When a submarine landslideoccurs, the various possibilities for tsunami generation can be analyzedand a useful forecast can be devised.