Seismicity of Algeria from 1365 to 2013: Maximum Observed Intensity Map (MOI2014)

Ayadi, Abdelhakim; Bezzeghoud, Mourad

doi:10.1785/0220140075

Cited by 74 publications

(28 citation statements)

References 23 publications

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“…These models are then applied in a case study of Algeria for earthquake loss prediction. As a first step to develop empirical seismic loss Ayadi and Bezzeghoud (2015) The ID (first column) is used to reference earthquakes in other tables…”

Section: Methodsmentioning

confidence: 99%

“…To compare the consequences of earthquakes in a comprehensive manner, the actual economic losses were adjusted and normalized to a common and unique value (Daniell et al 2011)-the 2015 USD currency. Nevertheless, for many countries around the Mediterranean (for example, France, Algeria, and Italy), this value was only available from the national census agencies after 1950, and GDP data before 1950 was Ayadi and Bezzeghoud (2015) and estimated POP Tot total population on the day of the earthquake, POP.Unit the affected population, D4 ? D5 damaged buildings, L EQ economic losses for the day of the earthquake, GDP gross domestic product for the day of the earthquake, GDP.Unit GDP of the affected area, L $2015 adjusted losses to USD in 2015, FA Ancien franc currency, FO Franc Or a From the National Geophysical Datacenter, losses are classified by range of losses, and for these earthquakes the mean values of the ranges were considered provided by Maddison (2006).…”

Section: Methodsmentioning

confidence: 99%

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Economic and Human Loss Empirical Models for Earthquakes in the Mediterranean Region, with Particular Focus on Algeria

Guettiche

Guéguen

Mimoune

2017

Int J Disaster Risk Sci

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In this study, loss estimation models were developed for reasonably accurate assessment of economic and human losses from seismic events in the Mediterranean region, based on damage assessment at an urban scale. Data were compiled from existing worldwide databases, and completed with earthquake information from regional studies. Economic data were converted to a single common currency unit (2015 USD value) and the wealth of the areas affected by 65 earthquakes of the region from 1900 to 2015 was assessed. Reduced-form models were used to determine economic and human losses, with earthquake magnitude and intensity as hazard-related variables, and gross domestic product of the affected area and the affected population as exposure-related variables. Damage to buildings was also used as a hazard-related variable to predict economic and human losses. Finally, site-specific regression models were proposed for economic and human losses due to earthquakes in the Mediterranean region, and more specifically, in Algeria. We show that by introducing the damage variable into the models, prediction error can be reduced, and that accuracy of loss model estimation is site dependent and requires regional data on earthquake losses to improve. A case study for Constantine, Algeria shows the improvements needed for increased accuracy.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Economic and Human Loss Empirical Models for Earthquakes in the Mediterranean Region, with Particular Focus on Algeria

Guettiche

Guéguen

Mimoune

2017

Int J Disaster Risk Sci

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“…These multi-segment faults were responsible for several strong earthquakes in the past (Philip and Meghraoui 1983;Meghraoui et al 2004) and are likely to produce strong seismic events in the future (Bouhadad and Laouami 2002). Several historical strong earthquakes have been mentioned in the available seismicity catalogs of Algeria (Benouar 1994;CRAAG 1994;Ayadi et Bezzeghoud, 2015). The city of Boumerdès considered, before the May 21, 2003 (Mw = 6.8) earthquake, as a seismically quite and safe area, has to consider now the impact of major active faults recently revealed and/or identified both offshore and onshore Meghraoui et al 2004;Deverchère et al 2005;Benfedda et al 2017).…”

Section: Seismotectonic Settingmentioning

confidence: 99%

Liquefaction hazard mapping in the city of Boumerdès, Northern Algeria

Bourenane

Bouhadad

Tas

2017

Bull Eng Geol Environ

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The city of Boumerdès, located in Northern Algeria, was badly affected during the May 21, 2003 Zemmouri (Mw = 6.8) earthquake where extensive liquefaction has been reported. The aim of this paper is to assess and to map the liquefaction potential for Boumerdès. We collected and used data from 154 boreholes, 10 down-hole tests, 56 standard penetrations tests (SPT), and inventory of 35 water level points. This data has been analyzed in the framework of geographical information systems (GIS). We assessed the liquefaction potential index (LPI) by considering a seismic hazard scenario corresponding to a max = 0.48 g calculated, using a probabilistic approach, for a return period of 500 years. LPI values have been correlated to compile the liquefaction hazard map that indicates the quantitative characteristics of the liquefiable layers and the induced disruption probability area. Results show that the main part of the city of Boumerdès belongs to a low liquefaction potential area except for a narrow corridor along the Corso waterway, where the liquefaction potential is moderate to high. The obtained results are compatible with the geological, geotechnical and hydrogeological susceptibility to liquefaction of the area. The results also show a good agreement with the observations made after the May 21, 2003 Zemmouri earthquake. The obtained liquefaction hazard maps may serve as useful tools for land management and planning in the city of Boumerdès and as an example of liquefaction hazard assessment that may be applied in other populated cities in northern Algeria's seismic prone areas.

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“…Many other events have occurred around the basin along its edges, such as the 1858 earthquake of Blida and the 1989 earthquake of Tipasa Mont Chénoua. The seismicity of the Mitidja basin is characterized by moderate earthquakes with episodic strong events (Ayadi and Bezzeghoud, 2015). Tectonic studies of the Mitidja Basin showed that it is filled with more than 3000 m of Quaternary sediments and is bounded by two systems of faults (Fig.…”

Section: Zemmouri-boumerdès Earthquakementioning

confidence: 99%

“…A map of the maximum observed seismic intensities (see figure 7 of Ayadi and Bezzeghoud, 2015) of Algeria clearly shows that the seismogenic zones are concentrated along the Tellian Atlas of Algeria. These zones (i.e., Oran, Mascara, El Asnam, Tipasa-Blida, Jijel, and Constantine) are concentrated linearly from the west to the east and define a boundary between the African and Eurasian plates.…”

Section: Introductionmentioning

confidence: 99%

Los mayores sismos en Argelia en la época moderna: las fallas de El Asnam y Zemmouri-Boumerdès

et al. 2017

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Seismicity of Algeria from 1365 to 2013: Maximum Observed Intensity Map (MOI2014)

Cited by 74 publications

References 23 publications

Economic and Human Loss Empirical Models for Earthquakes in the Mediterranean Region, with Particular Focus on Algeria

Economic and Human Loss Empirical Models for Earthquakes in the Mediterranean Region, with Particular Focus on Algeria

Liquefaction hazard mapping in the city of Boumerdès, Northern Algeria

Los mayores sismos en Argelia en la época moderna: las fallas de El Asnam y Zemmouri-Boumerdès

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