Tsunami Hazard Assessment in the Ionian Sea Due to Potential Tsunamogenic Sources – Results from Numerical Simulations
Nat. Hazards Earth Syst. Sci., 10, 1021–1030, 2010 www.nat-hazards-earth-syst-sci.net/10/1021/2010/ Natural Hazards doi:10.5194/nhess-10-1021-2010 and Earth © Author(s) 2010. CC Attribution 3.0 License. System Sciences Tsunami hazard assessment in the Ionian Sea due to potential tsunamogenic sources – results from numerical simulations G-A. Tselentis1, G. Stavrakakis2, E. Sokos1, F. Gkika1, and A. Serpetsidaki1 1University of Patras, Seismological Laboratory, Patras University Campus, Rio 26500, Greece 2Institute of Geodynamics, National Observatory of Athens, 118 10 Lofos Nymfon, Athens, Greece Received: 3 February 2010 – Accepted: 16 April 2010 – Published: 12 May 2010 Abstract. In spite of the fact that the great majority of seis- The Ionian region has an unexpected economic and tourist mic tsunami is generated in ocean domains, smaller basins growth with an increase in coastal population and the deve- like the Ionian Sea sometimes experience this phenomenon. lopment of large leisure areas during recent years, with many In this investigation, we study the tsunami hazard associated parts of coastal cities being a couple of metres above sea with the Ionian Sea fault system. level, making them prospective targets of a large-scale disas- A scenario-based method is used to provide an estimation ter, even if the height of the tsunami wave is moderate. This of the tsunami hazard in this region for the first time. Re- situation requires urgent solutions for an effective risk man- alistic faulting parameters related to four probable seismic agement and mitigation plan. For this reason, it is essential sources, with tsunami potential, are used to model expected to define the tsunami potential of the region and this study coseismic deformation, which is translated directly to the wa- presents the first results of such an attempt.
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