Seismic Hazard Assessment in the Broader Aegean Area Using Time-Independent Seismicity Models Based on Synthetic Earthquake Catalogs

Vamvakaris, D.; Papazachos, C. B.; Papaioannou, Ch.; Scordilis, E. M.; Karakaisis, G. F.

doi:10.12681/bgsg.11859

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…Regarding the seismic hazard, according to the effective Greek Seismic Code (EAK, 2003), Lesvos belongs to Zone II of 0.24 g design acceleration for a mean return period of 475 years (or 10% probability of exceedance in 50 years). Recent EU-projects, as for example SHARE (Giardini et al, 2013(Giardini et al, , 2014 and publications (Vamvakaris et al, 2016;Tselentis and Danciu, 2010;Weatherill and Burton, 2010) indicate higher accelerations, compared to those of the Greek Code. The scope of the present work is to revisit the calculation of the seismic hazard of Lesvos, using updated seismic catalogues and suitable ground motion prediction equations (GMPEs), alongside a sensitivity analysis to identify the parameters that shape the hazard levels at selected http://epublishing.ekt.gr | e-Publisher: EKT | Downloaded at 09/10/2020 12:19:49 |…”

Section: Volume 55mentioning

confidence: 99%

“…For our selection, we initially reviewed the R-CRISIS library, which has a plethora of built-in equations. To distinguish between suitable candidates, we used the procedure suggested by Cotton et al, (2006) combined with expert judgment while also reviewing the selections made among different experts in peer reviewed literature (Giardini et al, 2013;Giardini et al, 2014;Vamvakaris et al, 2016;Tselentis and Danciu, 2010;Weatherill and Burton, 2010). Against this background, we progressively rejected nonsuitable GMPEs until we were left with equations that meet our criteria ( Fig.…”

Section: Ground Motion Prediction Equationsmentioning

confidence: 99%

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Probabilistic Seismic Hazard Assessment (PSHA) for Lesvos Island Using the Logic Tree Approach

et al. 2019

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We carry out a probabilistic seismic hazard assessment (PSHA) for Lesvos Island, in the northeastern Aegean Sea. Being the most populated island in the northern Aegean Sea and hosting the capital of the prefecture, its seismic potential has significant social-economic meaning. For the seismic hazard estimation, the newest version of the R-CRISIS module, which has high efficiency and flexibility in model selection, is used. We incorporate into the calculations eight (8) ground motion prediction equations (GMPEs). The measures used are peak ground acceleration, (PGA), peak ground velocity, (PGV), and spectral acceleration, (SA), at T=0.2 sec representative of the building stock. We calculate hazard curves for selected sites on the island, sampling the southern and northern parts: Mytilene, the capital, the village of Vrisa, Mithymna and Sigri. Hazard maps are also presented in terms of all three intensity measures, for a mean return period of 475 years (or 10% probability of exceedance in 50 years), assuming a Poisson process. Our results are comparable to the predictions of on-going EU hazard models, but higher than the provisions of the Greek Seismic Code. Finally, we perform disaggregation of hazard to depict the relative contribution of different earthquake sources and magnitudes to the results.

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Section: Volume 55mentioning

confidence: 99%

Section: Ground Motion Prediction Equationsmentioning

confidence: 99%

Probabilistic Seismic Hazard Assessment (PSHA) for Lesvos Island Using the Logic Tree Approach

et al. 2019

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“…Greece is located in one of the most seismically active regions in Europe. Many seismic hazard studies have been performed for various places around Greece, at a regional or local scale [1][2][3][4][5][6][7][8][9][10][11][12]. However, the latest national seismic hazard map, currently used for the seismic design of buildings and infrastructure, was published in 2000, revised in 2003 [13], and has not been updated since then.…”

Section: Introductionmentioning

confidence: 99%

Seismic Hazard in Greece: A Comparative Study for the Region of East Macedonia and Thrace

et al. 2023

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Greece is located in one of the most seismically active regions in Europe. Many seismic hazard studies have been performed for various sites around Greece, at a regional or local scale. However, the latest national seismic hazard map, currently used for the seismic design of buildings and infrastructure, was published in 2000 and has not been updated since then. In light of recent advances in seismic source and ground motion modeling, the present study focuses on a comparative Probabilistic Seismic Hazard Assessment (PSHA) for the region of East Macedonia and Thrace (EMTH), located in Northern Greece. Various seismic source models are implemented and compared against an updated earthquake catalog to form the necessary source model logic tree. The ground motion logic tree is composed of Ground Motion Prediction Equations (GMPEs), which have been proven suitable for implementation in Greece. PSHA results are presented for the most important cities of East Macedonia and Thrace in a comparative way, which highlights the variability of the seismic hazard among the various seismic source models. An updated seismic hazard map of the study area is proposed, and a comparative disaggregation analysis is performed to estimate the earthquake scenarios with the largest contribution to the seismic hazard.

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Spectral decomposition of S-waves in investigating regional dependent attenuation and improving site amplification factors: A case study in western Greece

Grendas

Theodoulidis

Hollender

et al. 2022

Bull Earthquake Eng

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Seismic Hazard Assessment in the Broader Aegean Area Using Time-Independent Seismicity Models Based on Synthetic Earthquake Catalogs

Abstract: In order to evaluate the seismic hazard for the broader Aegean area, a modified timeindependent seismicity model is used. A Monte-Carlo procedure has been employed to

Cited by 4 publications

References 19 publications

Probabilistic Seismic Hazard Assessment (PSHA) for Lesvos Island Using the Logic Tree Approach

Probabilistic Seismic Hazard Assessment (PSHA) for Lesvos Island Using the Logic Tree Approach

Seismic Hazard in Greece: A Comparative Study for the Region of East Macedonia and Thrace

Spectral decomposition of S-waves in investigating regional dependent attenuation and improving site amplification factors: A case study in western Greece

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