The Algiers, Algeria Earthquake (Mw 6. 8) of 21 May 2003: Preliminary Report

Hamdache, Mohamed; Peláez, José A.; Yelles-Chauche, A. Karim

doi:10.1785/gssrl.75.3.360

Cited by 23 publications

(17 citation statements)

References 14 publications

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“…The El Asnam region suffered the most destructive earthquakes recorded in this region, namely those of September 9, 1954 (M s 6.8) and October 10, 1980 (M w 7.3). The most significant recent event was the May 21, 2003 (M w 6.9) Zemmouri earthquake, located around 50 km northeast of Algiers (HAMDACHE et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Ground-Motion Hazard Values for Northern Algeria

Hamdache

Peláez

Talbi

et al. 2011

Pure Appl. Geophys.

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This study examines distinctive features of ground motion parameters in northern Algeria. An initial computation of seismic hazard in terms of horizontal peak ground acceleration (PGA) and spectral acceleration (SA) at different periods, damped at 5%, is carried out for three different types of soils (rock, stiff soils and soft soils) for return periods of 100 and 475 years. In addition, uniform hazard spectra (UHS) are computed for these two return periods at several locations in the region. Then, the UHS computed for different soil types are proposed as a starting point to define elastic design spectra for building-code purposes. We have used the well-known Newmark-Hall approach. As proposed in the most recent International Building Codes, the SA (0.2 s) value is used to establish the spectral region for lower periods (region controlled by acceleration), whereas the SA (1.0 s) value is used to establish the spectral region for intermediate periods (region controlled by velocity). We also obtained important relations, dependent on site condition, between SA (0.2 s), SA (1.0 s) or SA max values, and the PGA, for both return periods of 100 and 475 years. Other relationships between PGA or SA max values have also been derived for return periods of 100 and 475 years, in this case independent of site condition.

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Section: Introductionmentioning

confidence: 99%

Ground-Motion Hazard Values for Northern Algeria

Hamdache

Peláez

Talbi

et al. 2011

Pure Appl. Geophys.

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“…In any case, some destructive events have taken place in the Tell Atlas, to the north of the Tellian front. Examples of these include the 1954 and 1980 Ech-Chlef (previously Orleansville) earthquakes (M S 6.8 and M S 7.3, respectively) and the more recent 2003 Zemmouri (M W 6.8) earthquake (Edwards 2004;Hamdache et al 2004). …”

Section: Tectonic Frameworkmentioning

confidence: 99%

A Unified Catalog of Main Earthquakes for Northern Algeria from A.D. 856 to 2008

Hamdache

Peláez

Talbi

et al. 2010

Seismological Research Letters

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“…Table 4 shows seismic strain rates of some arbitrary selected significant and medium earthquakes. Data of observed aftershock areas were obtained from MISRA et al (2003), KANAORI AND SHIN-ICHI (1996), HAMDACHE et al (2004) and ZSÍROS (2000. For the earthquake in Komárom (1763) the aftershock area was estimated by use of Eq.…”

Section: Study Of Seismic Sources By Use Of Strain Ratesmentioning

confidence: 99%

Geodetic Strain Observations and Return Period of the Strongest Earthquakes of a Given Seismic Source Zone

Varga

2010

Pure Appl. Geophys.

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We present the basis for a method for estimating the return period of large and medium earthquakes that is independent of current deterministic and probabilistic approaches. The two standard techniques of seismic hazard assessment-probabilistic seismic hazard assessment (PSHA) and deterministic seismic hazard assessment (DSHA)-suffer from limited knowledge of seismic prehistory. A further weakness of PSHA is its requirement of homogeneous seismic activity within a seismic zone. Moreover, PSHA and DSHA were developed for seismically active areas and, thus, cannot reliably be used in areas of medium and low activity. In this paper we propose the combined use of geodetic strain rate data and the seismic moment data set determined for past seismic events. This combination represents a new and independent approach to estimation of future seismic activity. Using a modified version of Kostrov's (Phys Solid Earth 1:23-40, 1974) equation and the catalogue of seismic moments, the minimum return period of the strongest earthquakes of a source area is estimated.

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The Algiers, Algeria Earthquake (Mw 6. 8) of 21 May 2003: Preliminary Report

Cited by 23 publications

References 14 publications

Ground-Motion Hazard Values for Northern Algeria

Ground-Motion Hazard Values for Northern Algeria

A Unified Catalog of Main Earthquakes for Northern Algeria from A.D. 856 to 2008

Geodetic Strain Observations and Return Period of the Strongest Earthquakes of a Given Seismic Source Zone

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