Vol. 55, n.2, June 2014 pp. 485-500
Evaluation of tsunami scenarios for western Peloponnese,
Greece
A.C. YALÇINER, P. GÜLKAN, D.I. DILMEN, B. AYTORE, A. AYCA, I. INSEL and
A. ZAYTSEV
Received: April 11, 2010; accepted: April 24, 2014
Abstract
Tsunami hazard assessment of the eastern part of the Mediterranean Sea is the current
interest of the countries having a coastline in this region. Considering today\'s increasing
population on the coasts and historical tsunamis, it is essential to estimate the probable
tsunami risk, which might occur, to be able to mitigate the risk before the actual tsunami
event happens. For this purpose, European Union funded project, SEAHELLARC
is formed to develop a methodology and tools for seismic and tsunami safety and
enhance the protection of coastal areas in the western part of Peloponnese in Greece
by simultaneous observations and evaluation of onshore and offshore data. In this
paper, we present the tsunami simulations of characteristics of possible tsunami source
scenarios for the Pylos-Zakynthos-Filiatra and Kyparissia regions, located at western
part of Greece. We use NAMIDANCE tsunami simulation and visualization tool to
estimate extreme but possible tsunami wave effects in these regions. In the simulations
the tsunami arrival times, maximum positive and negative amplitudes are computed,
plotted, compared and discussed for the coastal areas of Zakynthos, Filiatra, Kyparissia
and Pylos. Furthermore, a detailed mapping of the bathymetric features is performed
to define possible landslides and lithological variations at the marine bottom. the uppermost sediments are mapped by sub-bottom profiling, while possible faults are mapped by sub-bottom profiling, while possible faults are identified by multi-channel reflection mapping at the western Peloponnese. This paper also builds upon the background of a seismic hazard assessment for the region to draw several credible tsunami occurrence scenarios that have been numerically simulated.
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