Seismic Risk Scenarios for an Efficient Seismic Risk Management: The Case of Thessaloniki (Greece)

Pitilakis, Kyriazis; Alexoudi, M.; Argyroudis, Sotirios; Anastasiadis, Anastasios

doi:10.1007/1-4020-4571-9_15

Cited by 15 publications

(10 citation statements)

References 3 publications

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“…The Vulnerability Index Method (VIM) was used to assess the seismic vulnerability. The method was a part of the Risk-UE project; it has been applied to assess the seismic risk for seven European cities (Barcelona, Bitola, Bucharest, Catania, Nice, Sofia and Thessaloniki) (Mouroux et al 2004;Pitilakis et al 2006;Lantada et al 2010) around the Mediterranean Sea. The choice for this assessing technique is motivated by its simplified methodology which allows considering numerous uncertainties.…”

Section: Manuscriptmentioning

confidence: 99%

Seismic risk in the city of Al Hoceima (north of Morocco) using the vulnerability index method, applied in Risk-UE project

et al. 2016

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The final publication is available at Springer via http://dx.doi.org/10.1007/s11069-016-2566-8Al Hoceima is one of the most seismic active regions in north of Morocco. It is demonstrated by the large seismic episodes reported in seismic catalogs and research studies. However, seismic risk is relatively high due to vulnerable buildings that are either old or don’t respect seismic standards. Our aim is to present a study about seismic risk and seismic scenarios for the city of Al Hoceima. The seismic vulnerability of the existing residential buildings was evaluated using the vulnerability index method (Risk-UE). It was chosen to be adapted and applied to the Moroccan constructions for its practicality and simple methodology. A visual inspection of 1102 buildings was carried out to assess the vulnerability factors. As for seismic hazard, it was evaluated in terms of macroseismic intensity for two scenarios (a deterministic and probabilistic scenario). The maps of seismic risk are represented by direct damage on buildings, damage to population and economic cost. According to the results, the main vulnerability index of the city is equal to 0.49 and the seismic risk is estimated as Slight (main damage grade equal to 0.9 for the deterministic scenario and 0.7 for the probabilistic scenario). However, Moderate to heavy damage is expected in areas located in the newer extensions, in both the east and west of the city. Important economic losses and damage to the population are expected in these areas as well. The maps elaborated can be a potential guide to the decision making in the field of seismic risk prevention and mitigation strategies in Al Hoceima.Peer ReviewedPostprint (author's final draft

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Section: Manuscriptmentioning

confidence: 99%

Seismic risk in the city of Al Hoceima (north of Morocco) using the vulnerability index method, applied in Risk-UE project

et al. 2016

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“…The results of this comparison are shown in Figure 8 using both grdgradient of GMT and the Slope tool of ArcGIS. Other microzonations exist for Thessaloniki, for example that by Anastasiadis et al (2001) used by Pitilakis et al (2006) for risk scenarios, which shows significant differences to the map of Theodulidis et al (2006).…”

Section: Thessalonikimentioning

confidence: 99%

Testing the Applicability of Correlations between Topographic Slope and VS30 for Europe

Lemoine¹,

Douglas²,

Cotton³

2012

Bulletin of the Seismological Society of America

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International audienceIn the past few years a series of articles have been published concerning the use of topographic slope from digital elevation models (DEMs) constructed through remote sensing (satellite imaging) to give first-order estimates of National Earthquake Hazards Reduction Program (NEHRP) site classes based on the average shear-wave velocity in the top 30 m, VS30 (Wald and Allen, 2007). We evaluate the potential applicability of these methods taking advantage of a large (706 sites) new database of measured and estimated VS30 values and their topographic slopes for locations in Europe and the Middle East. Novel statistical tests are performed to evaluate the predictive power of the procedure in this region. We evaluate the percentage of sites correctly classified/misclassified for each site class for active and stable regimes. We also analyze the marginal distributions of the input VS30 and slope values and their impact on the VS30-slope correlations and we evaluate whether the method performs better than does chance. We also consider the surface geology of sites and investigate whether differences in geology can help explain why certain sites are poorly classified by the method. Finally, we use the city of Thessaloniki, Greece, as a test case for comparison between the results of a recent microzonation and the site classes predicted by VS30-slope correlations. Our results show that the method does a better job than blind chance for all site classes in active regions, but only for class B (rock) and to a lesser extent class C (stiff soil) sites located in stable areas, although the conclusions for stable areas are based on limited data. We recommend that site classifications based on the VS30-slope correlations proposed by Wald and Allen (2007) be used only for regional or national (and not local or site-specific) first-order studies in active parts of Europe and only in the absence of other more detailed information, excluding sites inside small basins or those with special geological conditions that may affect results (e.g., flat-lying volcanic plateaus, carbonate rocks, continental glaciated terrain, or a coastal location if slope is not calculated using bathymetric data)

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“…Similarly, RISK-UE project dealt with the seismic risk of the city of Thessaloniki (and six more large European cities) by taking into consideration deterministic and probabilistic seismic hazard scenarios together with the vulnerability of the elements at risk (Pitilakis et al 2006). In all the above mentioned studies, the main elements that are used include the spatial distribution and engineering characteristics of the buildings and the geological and geomorphologic conditions of the ground.…”

Section: Introductionmentioning

confidence: 99%

Earthquake vulnerability and seismic risk assessment of urban areas in high seismic regions: application to Chania City, Crete Island, Greece

et al. 2009

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The earthquake vulnerability and the seismic risk assessment for the urban center of Chania in the island of Crete is approached through the development of a GISbased application that takes into consideration the structural and geological domain of the region. Considering a localized model, the various structural and geomorphologic attributes of the region were assigned specific weights of significance that allowed the creation of a modular application that was tested for the city of Chania, and it was verified based on the recent seismic activity of the area. The proposed risk map and model can become a significant tool for confronting crises resulting from future earthquake incidences.

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Seismic Risk Scenarios for an Efficient Seismic Risk Management: The Case of Thessaloniki (Greece)

Cited by 15 publications

References 3 publications

Seismic risk in the city of Al Hoceima (north of Morocco) using the vulnerability index method, applied in Risk-UE project

Seismic risk in the city of Al Hoceima (north of Morocco) using the vulnerability index method, applied in Risk-UE project

Testing the Applicability of Correlations between Topographic Slope and VS30 for Europe

Earthquake vulnerability and seismic risk assessment of urban areas in high seismic regions: application to Chania City, Crete Island, Greece

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