Review of coastal areas where paleotsunami investigations have been made and temporal tsunami-event information will be presented. Special attention will be given to the ways in which geological traces can be translated into tsunami parameters.
Tsunami data - what they are and what they are needed for? How basic tsunami parameters have been estimated? What are the probable errors associated with each significant parameter? Spatial and temporal coverage of the existing tsunami data in catalogs will be presented and methodology for transferring tsunami catalog data into the digital databases in computer-storage form will be discussed. Emphasis will be given for the new communication technologies, e.g. WWW, CD-ROM, FTP management, for providing a remote access to databases.
In the earthquake magnitude range from 7.0 to 7.5, less than one-quarter of Pacific submarine earthquakes are tsunamigenic. What are the source characteristics and mechanism of tsunamigenic earthquakes which differ from non-tsunamigenic earthquakes? Distribution of the source pattern of tsunamigenic earthquakes along the Pacific Fire Belt, seismic gaps and their application to the long-term tsunami risk, and the problem of tsunami-earthquakes will be discussed.
The state-of-the-art of the numerical technique for tsunami modeling will be discussed with the special emphasis on the run-up calculation methods and their ability to reproduce the actual distribution of tsunami runup heights measured during recent field surveys.
This will be a key item of the workshop agenda. The review of existing methods of tsunami risk analyses will be given with comparative consideration of deterministic versus probabilistic approaches. Several case studies of tsunamizoning will be presented with the focus on the rational selection of the spatial-temporal scale for tsunamizoning.
For a particular coastal region, the tsunami is a very rare phenomenon. Should we take into account its combination with other type of marine disasters (high tides, storm surges)? If so, then how ?
What should be the final product of tsunamizonation study and what is the policy of practical implementation of tsunami risk studies? Here might be topics on vulnerability of coastal communities to a tsunami impact, preparedness and awareness measures and public response to them, methods of assessment of potential economic loss, hazard insurance, etc.
Establishment of tsunami data centers were discussed at the Estes-Park workshop last year. We need to follow up this discussion and hopefully to find concrete means to materialize this idea.