The Algerian Homogenized Macroseismic Database (267–1989): A Deeper Insight into the Algerian Historical Seismicity

Harbi, Assia; Sebai, A.; Benmedjber, Manel; Ousadou, Farida; Rouchiche, Yasmina; Grigahcène, A.; Aïni, Djamel; Bourouis, Seid; Maouche, Saïd; Ayadi, Abdelhakim

doi:10.1785/0220150092

Cited by 35 publications

(11 citation statements)

References 15 publications

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“…Concerning the macroseismic intensity, all the events are homogeneous with intensity assessed or reassessed into European Macroseismic Scale EMS-98 (Harbi et al 2015). Table 1 summarized the most significant seismic events that occurred in Algeria from 1365 to 2003.…”

Section: Historical and Archeoseismological Investigationsmentioning

confidence: 99%

“…1). Prior to 1900, several destructive earthquakes were reported by Algerian seismological catalogs (Ayadi and Bezzeghoud 2015;Harbi et al 2015) such as those of Algiers (1365 and 1716, I 0 = X), Oran (1790, I 0 = X), and Djidjelli (1856, I 0 = IX) (Table 1), cited as almost documented events. These events left thousands of deaths and severe damage in the cities where the earthquakes occurred and in their vicinities.…”

Section: Introductionmentioning

confidence: 99%

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An update of Algerian’s seismic catalog from historical seismicity, archeoseismological, and paleoseismological studies

Ayadi

Ousadou

Roumane³

et al. 2021

Arab J Geosci

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For any seismic hazard study, a reliable, homogenized, and complete seismic catalog is required. The Algerian seismicity catalog has been recently updated by retrieving and reappraising many historical events. The Algerian seismic network has also been densified up to about 80 seismic stations covering the Tell Atlas which is the most active area of northern Algeria for monitoring of the seismic activity reducing the magnitude threshold. Recently, we have launched archeoseismological studies to retrieve past strong earthquakes that have affected Roman sites located along the Tell Atlas. Here, we proceed with tectonic investigations around selected sites where significant observed damage were identified. On the other hand, paleoseismological investigations were conducted along the El Asnam fault (now Chlef) following the large Ms 7.3 earthquake of 1980. Paleoseismic studies combined with archeoseismological results provide the dating of past earthquakes and contribute to the completeness of the seismicity catalog.

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Section: Historical and Archeoseismological Investigationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An update of Algerian’s seismic catalog from historical seismicity, archeoseismological, and paleoseismological studies

Ayadi

Ousadou

Roumane³

et al. 2021

Arab J Geosci

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“…Ayadi reported on the results of two recent initiatives, which are to analyse unpublished historical documents, and study Roman ruins from between 146 and 429 BC which show evidence of damage from strong earthquakes. The first initiative has so far recovered 286 events, and the associated database has been published in Harbi et al (2015) and is available online. The second initiative has involved identifying the type of damage that could be sustained by stone structures and attempting to find evidence at archaeological sites.…”

Section: Earthquake Seismologymentioning

confidence: 99%

Frontiers of seismology

Ziolkowski

Bell

Browitt

et al. 2020

Astronomy &Amp; Geophysics

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“…A significant effort was necessary in order to combine regional catalogues such as those of Benouar, 1994;Amponsah et al, 2012;Midzi et al, 2013;Bezzeghoud, 2015, andHarbi et al, 2015 into a single homogeneous seismicity catalogue across Africa. The search for historical earthquakes at national level and from local old publications represents a major effort throughout the project from…”

Section: Historical and Instrumental Seismicitymentioning

confidence: 99%

The Seismotectonic Map of Africa

Meghraoui¹

2016

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We present the Seismotectonic Map of Africa based on a geological, geophysical and geodetic database including instrumental seismicity and re-appraisal of large historical events, and harmonization and homogenization of earthquake parameters in the catalogues. Although establishing the seismotectonic framework of the African continent is a difficult task, several previous and ongoing projects provide a wealth of data and outstanding results. The database of large and moderate earthquakes in different geological domains includes the coseismic and Quaternary faulting that reveals the complex nature of the active tectonics in Africa. The map benefits from previous works on local and regional seismotectonic maps that needed to be integrated with the lithospheric and upper mantle structures, seismic anisotropy tomography and gravity anomaly, into a continental framework. The synthesis of earthquake and volcanic studies obtained from the analysis of late Quaternary faulting and geodetic data will serve as a basis for hazard calculations and the reduction of seismic risks. The map will be useful for the seismic hazard assessment and earthquake risk mitigation for significant infrastructures and their socioeconomic implications in Africa. The constant population increase and infrastructure growth in the continent that exacerbate earthquake risk justify the necessity of continuously updating this map. The database and related map are prepared in the framework of the IGC Project-601 "Seismotectonics and Seismic Hazards in Africa" of UNESCO-IUGS, funded by the Swedish International Development Agency and UNESCO-Nairobi for a period of 4 years (2011-2014, now extended to 2016).

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The Algerian Homogenized Macroseismic Database (267–1989): A Deeper Insight into the Algerian Historical Seismicity

Cited by 35 publications

References 15 publications

An update of Algerian’s seismic catalog from historical seismicity, archeoseismological, and paleoseismological studies

An update of Algerian’s seismic catalog from historical seismicity, archeoseismological, and paleoseismological studies

Frontiers of seismology

The Seismotectonic Map of Africa

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