Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/8663
AuthorsBasili, R.* 
Tiberti, M. M.* 
Kastelic, V.* 
Romano, F.* 
Piatanesi, A.* 
Selva, J.* 
Lorito, S.* 
TitleIntegrating geologic fault data into tsunami hazard studies
Issue Date19-Apr-2013
Series/Report no.3/14(2013)
DOI10.5194/nhess-13-1025-2013
URIhttp://hdl.handle.net/2122/8663
Keywordsactive fault
tsunami
tsunamigenic source
earthquake
PTHA
hazard
epistemic uncertainty
tectonic moment rate
Subject Classification03. Hydrosphere::03.01. General::03.01.01. Analytical and numerical modeling 
04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismology 
04. Solid Earth::04.04. Geology::04.04.04. Marine geology 
04. Solid Earth::04.04. Geology::04.04.09. Structural geology 
04. Solid Earth::04.06. Seismology::04.06.02. Earthquake interactions and probability 
04. Solid Earth::04.07. Tectonophysics::04.07.04. Plate boundaries, motion, and tectonics 
04. Solid Earth::04.07. Tectonophysics::04.07.06. Subduction related processes 
04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics 
AbstractWe present the realization of a fault-source data set designed to become the starting point in regional-scale tsunami hazard studies. Our approach focuses on the parametric fault characterization in terms of geometry, kinematics, and assessment of activity rates, and includes a systematic classification in six justification levels of epistemic uncertainty related with the existence and behaviour of fault sources. We set up a case study in the central Mediterranean Sea, an area at the intersection of the European, African, and Aegean plates, characterized by a complex and debated tectonic structure and where several tsunamis occurred in the past. Using tsunami scenarios of maximum wave height due to crustal earthquakes (Mw=7) and subduction earthquakes (Mw=7 and Mw=8), we illustrate first-order consequences of critical choices in addressing the seismogenic and tsunamigenic potentials of fault sources. Although tsunamis generated by Mw=8 earthquakes predictably affect the entire basin, the impact of tsunamis generated by Mw=7 earthquakes on either crustal or subduction fault sources can still be strong at many locales. Such scenarios show how the relative location/orientation of faults with respect to target coastlines coupled with bathymetric features suggest avoiding the preselection of fault sources without addressing their possible impact onto hazard analysis results.
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