Tsunami hazard assessment in the Caribbean region: source identification and variation for tsunami modeling
Abstract
The need for identifying credible seismic sources to use in tsunami hazard assessment is being addressed by the Intergovernmental Oceanographic Commission (IOC) of UNESCO by supporting working groups and holding regional scientific expert's meetings. These meetings seek to better understand the uncertainties associated with various subduction zones, and provide quantified guidance on tsunamigenic seismic sources for use in inundation mapping. Meetings were held in Wellington, New Zealand (November 2018) for the Tonga and South Pacific regions, and in Punterenas, Costa Rica (May 2017) for the Caribbean and Central American region. The outcome of these meetings included sources recommended for hazard and risk assessment, categorized by likelihood of occurrence. This study looks at various tsunami modeling hazard assessments using the sources recommended by these meetings, and archived as part of the Caribbean and Adjacent Regions Tsunami Sources and Models project (https://maps.ngdc.noaa.gov/viewers/CATSAM/). Results from modeling studies in the US Virgin Islands, Grenada, Saint Vincent and the Grenadines, and Belize will be presented, along with illustrations of interesting problems arising from the use of identified sources. Sensitivity to various fault-plane parameters will be addressed, and recommendations made to help focus efforts in the identification of tsunami sources regionally.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMNH41A..04M
- Keywords:
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- 4315 Monitoring;
- forecasting;
- prediction;
- NATURAL HAZARDS;
- 4333 Disaster risk analysis and assessment;
- NATURAL HAZARDS;
- 4341 Early warning systems;
- NATURAL HAZARDS;
- 4564 Tsunamis and storm surges;
- OCEANOGRAPHY: PHYSICAL