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Real-time inversion of tsunamis generated by landslides
- Source :
- Natural Hazards and Earth System Sciences, Vol 11, Iss 9, Pp 2511-2520 (2011)
- Publication Year :
- 2018
-
Abstract
- In this paper, we test a method for forecasting in real-time the properties of offshore propagating tsunami waves generated by landslides, with the aim of supporting tsunami early warning systems. The method uses an inversion procedure, that takes input data measurements of water surface elevation at a point close to the tsunamigenic source. The measurements are used to correct the results of pre-computed numerical simulations, reproducing the wave field induced by different landslide scenarios. The accuracy of the method is evaluated using the results of laboratory experiments, aimed at studying tsunamis generated by landslides sliding along the flank of a circular shoreline island. The paper investigates what the optimal position is of where to measure the tsunamis, what the effects are, the accuracy of the results, and of uncertainties on the landslide scenarios. Finally, the method is successfully tested using partial input time series, simulating the behaviour of the system in real-time during the tsunami event when forecasts are updated, as the measurements become available.
- Subjects :
- Time inversion
Shore
lcsh:GE1-350
geography
geography.geographical_feature_category
Tsunami wave
Warning system
lcsh:QE1-996.5
lcsh:Geography. Anthropology. Recreation
Landslide
Inversion (meteorology)
lcsh:TD1-1066
lcsh:Geology
lcsh:G
General Earth and Planetary Sciences
Submarine pipeline
lcsh:Environmental technology. Sanitary engineering
Earth and Planetary Sciences (all)
Geology
Seismology
lcsh:Environmental sciences
Subjects
Details
- Language :
- English
- ISSN :
- 16849981
- Database :
- OpenAIRE
- Journal :
- Natural Hazards and Earth System Sciences, Vol 11, Iss 9, Pp 2511-2520 (2011)
- Accession number :
- edsair.doi.dedup.....0bcd96c29d6e466bd278d14f28e21eaa