Tsunami hazard in the southeast Aegean Sea

Mitsoudis, Dimitrios A.; Flouri, Evangelia T.; Chrysoulakis, Nektarios; Kamarianakis, Yiannis; Okal, Emile A.; Synolakis, Costas E.

doi:10.1016/j.coastaleng.2011.09.004

Cited by 28 publications

(44 citation statements)

References 31 publications

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“…Burbidge et al (2008) also took into account fault sources other than megathrusts associated with subduction zones and used criteria based on the expected potential tsunami threat to preselect the fault sources to be included in the analysis. Some PTHA studies mainly relied on earthquake catalogs to delineate broad area sources (Mitsoudis et al, 2012;Sørensen et al, 2012) or gridded seismicity (Grezio et al, 2012). Recurrence time or frequency of earthquake sources is often based on the Gutenberg-Richter power law (Power et al, 2007;Burbidge et al, 2008;Power et al, 2012;Grezio et al, 2012;Sørensen et al, 2012) or the characteristic earthquake model (Annaka et al, 2007;González et al, 2009) or both (Geist and Parsons, 2006).…”

Section: Introductionmentioning

confidence: 99%

Integrating geologic fault data into tsunami hazard studies

Basili

Tiberti

Kastelic

et al. 2013

Nat. Hazards Earth Syst. Sci.

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We 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 (M_w=7) and subduction earthquakes (M_w=7 and M_w=8), we illustrate first-order consequences of critical choices in addressing the seismogenic and tsunamigenic potentials of fault sources. Although tsunamis generated by M_w=8 earthquakes predictably affect the entire basin, the impact of tsunamis generated by M_w=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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Section: Introductionmentioning

confidence: 99%

Integrating geologic fault data into tsunami hazard studies

Basili

Tiberti

Kastelic

et al. 2013

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Following , we consider the following problem: Suppose that an earthquake occurs in a region denoted by Ω, a bounded subset of

{double-struckR}^{2}

, and let the point x of Ω denote the epicenter location. Let Y ( x ) be the maximum waveheight of a tsunami generated at epicenter x at a given location on land.…”

Section: The Probabilistic Approachmentioning

confidence: 99%

“…Thus, in each subregion, we need a measure of the seismicity for a certain time period. For this purpose, we use the most probable maximum size

\overset{M}{true} = (a + normallog t) / b

from . The parameters a , b are the parameters of the Gutenberg–Richter distribution (see Table 7.1, p. 120 of ).…”

Section: The Probabilistic Approachmentioning

confidence: 99%

Numerical modeling of tsunamis and tsunami vulnerability analysis for Heraklion, Crete

Flouri

Dougalis

Synolakis

2016

Math Methods in App Sciences

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Tsunamis are rare events compared with other extreme natural hazards, but the growth of population along coastlines has increased their potential impact. Tsunamis are most often generated by earthquake‐induced dislocations of the seafloor, which displace large water masses. They can be simulated effectively as long waves whose propagation is modeled by the nonlinear shallow water equations. In this note, we present a brief assessment of earthquake‐generated tsunami hazards for the city of Heraklion, Crete. We employ numerical hydrodynamic simulations, including inundation computations with the model MOST, and use high‐resolution bathymetry and topography data for the area of interest. MOST implements a splitting method in space to reduce the system of shallow water equations in two successive systems, one for each spatial variable, and it uses a dispersive, Godunov‐type finite difference method to solve the equations in characteristic form. We perform probabilistic analysis to assess the effects of the earthquake epicenter location on the tsunami, for time windows of 100, 500, and 1000years. The tsunami hazard is assessed through computed values of the maximum inundation range and maximum flow depth. Finally, we present a brief vulnerability analysis for the city of Heraklion, Crete. The data needed to identify tsunami‐vulnerable areas are obtained by combining remote sensing techniques and geographic information system technology with surveyed observations and estimates of population data. Copyright © 2016 John Wiley & Sons, Ltd.

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“…In this context, the parameters for S2 are based on those published by Mitsoudis et al (2012), but with a larger slip, equal to 10 m over a 190 km segment of the eastern Hellenic Arc (Figure 3(b)). The location of source S2 is also different from that analysed by Mitsoudis et al (2012), and was selected to produce the maximum potential runup along the western Nile Delta region near the Rosetta promontory.…”

Section: Megathrust Tsunami Sources In the Eastern Mediterranean Seamentioning

confidence: 99%

Plausible megathrust tsunamis in the eastern Mediterranean Sea

Valle

Kalligeris

Findikakis

et al. 2014

Proceedings of the Institution of Civil Engineers - Engineering

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Tsunamis have occurred at rates of about one to two per century in the Mediterranean Sea, on average, over the past 2000 years. However, most of these events have been of small amplitude and quantification of tsunami hazards in the eastern Mediterranean Sea remains difficult. Simulations were performed for a series of plausible M w > 8 seismic events originating along the Hellenic subduction zone and NW Cyprian Arc. Their locations and source characteristics represent events that are similar to the largest historical events, including the AD 365 and AD 1303 events, and in consideration of potential future events. The hydrodynamic simulations used the numerical model are known as the method of splitting tsunami (Most). Reported results include simulated wave amplitudes in the eastern Mediterranean Sea, specifically in the western Nile Delta region near the Rosetta promontory and Egypt's largest coastal city, Alexandria.

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Tsunami hazard in the southeast Aegean Sea

Cited by 28 publications

References 31 publications

Integrating geologic fault data into tsunami hazard studies

Integrating geologic fault data into tsunami hazard studies

Numerical modeling of tsunamis and tsunami vulnerability analysis for Heraklion, Crete

Plausible megathrust tsunamis in the eastern Mediterranean Sea

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