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Journal of Seismology

, Volume 4, Issue 1, pp 79–98 | Cite as

Seismogenic potential and earthquake hazard assessment in the Tell Atlas of Algeria

  • A. Aoudia
  • F. Vaccari
  • P. Suhadolc
  • M. Meghraoui
Article

Abstract

Seismotectonic zonation studies in the Tell Atlas of Algeria, a branch of the Africa-Eurasia plate boundary, provide a valuable input for deterministic seismic hazard calculations. We delineate a number of seismogenic zones from causal relationships established between geological structures and earthquakes and compile a working seismic catalogue mainly from readily available sources. To this catalogue, for a most rational and best-justified hazard analysis, we add estimates of earthquake size translated from active faulting characteristics. We assess the regional seismic hazard using a deterministic procedure based on the computation of complete synthetic seismograms (up to 1 Hz) by the modal summation technique. As a result, we generate seismic hazard maps of maximum velocity, maximum displacement, and design ground acceleration that blend information from geology, historical seismicity and observational seismology, leading to better estimates of the earthquake hazard throughout northern Algeria. Our analysis and the resulting maps illustrate how different the estimate of seismic hazard is based primarily on combined geologic and seismological data with respect to the one for which only information from earthquake catalogues has been used.

active faulting deterministic seismic hazard Algeria seismicity 

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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • A. Aoudia
    • 1
    • 2
  • F. Vaccari
    • 1
    • 3
  • P. Suhadolc
    • 1
  • M. Meghraoui
    • 4
  1. 1.Dipartimento di Scienze della TerraUniversity of TriesteItaly
  2. 2.Abdus Salam International Centre for Theoretical PhysicsSAND GroupTriesteItaly
  3. 3.Gruppo Nazionale per la Difesa dai TerremotiCNRRomeItaly
  4. 4.EOSTInstitut de Physique du GlobeStrasbourgFrance

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