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文章基本信息

  • 标题:Reciprocal Green's functions and the quick forecast of submarine landslide tsunamis
  • 本地全文:下载
  • 作者:Chen, Guan-Yu ; Liu, Chin-Chih ; Wijetunge, Janaka J.
  • 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.
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