Seismic Hazard Estimation in Northern Algeria |
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| Authors: | Hamdache Mohamed |
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| Institution: | (1) Département Etudes et Surveillance Sismique, Centre de Recherche en Astronomie, Astrophysique et de Geophysique (CRAAG), B.P. 63-Bouzaréah, 16340 Algiers, Algeria |
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| Abstract: | In the present study, the seismic hazard in northern Algeria is estimated using both physical strain energy release and Gumbel's extreme values approaches. For six of the most industrial and populated cities in Algeria, seismic hazard is assessed and examined in greater detail. Gumbel's extreme values approach has been used to estimate seismic hazard in terms of magnitude and P.G.A at each point of an equispaced grid all over the north of Algeria. An average attenuation relationship for PGA has been provided using known relations which have been established in regions with similar attenuation characteristics.The results are presented mainly in the form of graphs and contour maps of magnitudes (respectively PGA) with a 60% probability of not being exceeded in the next 100 and 200 years. Globally, they give main features of northern Algeria in terms of zoning (as well as in terms of magnitude and in terms of PGA). They corroborate the ones obtained through other works, especially in the basin areas (Mitidja, Cheliff, Soumam and Constantine Basin). |
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| Keywords: | probabilistic seismic hazard seismic energy release northern Algeria |
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