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- Title
Reciprocal Green's functions and the quick forecast of submarine landslide tsunamis.
- Authors
Chen, Guan-Yu; Liu, Chin-Chih; Wijetunge, Janaka J.; Wang, Yi-Fung
- Abstract
Although tsunamis generated by submarine mass failure are not as common as those induced by submarine earthquakes, sometimes the generated tsunamis are higher than a seismic tsunami in the area close to the tsunami source, and the forecast is much more difficult. In the present study, reciprocal Green's functions (RGFs) are proposed as a useful tool in the forecast of submarine landslide tsunamis. The forcing in the continuity equation due to depth change in a landslide is represented by the temporal derivative of the water depth. After a convolution with reciprocal Green's function, the tsunami waveform can be obtained promptly. Thus, various tsunami scenarios can be considered once a submarine landslide happens, and a useful forecast can be formulated. When a submarine landslide occurs, the various possibilities for tsunami generation can be analyzed and a useful forecast can be devised.
- Subjects
GREEN'S functions; LANDSLIDES; TSUNAMIS; TSUNAMI hazard zones; LANDSLIDE prediction; EARTHQUAKE zones; WATER depth
- Publication
Natural Hazards & Earth System Sciences, 2020, Vol 20, Issue 3, p771
- ISSN
1561-8633
- Publication type
Article
- DOI
10.5194/nhess-20-771-2020