Bulletin du Service Géologique de l'Algérie
Volume 14, Numéro 2, Pages 65-77
2003-07-01
Auteurs : Boughacha Mohamed Salah . Ouyed Merzouk . Benhallou Hadj . Djeddi Mabrouk . Hatzfeld Denis .
More than 800earthquakes with magnitude greater than or equal to 4, have let us to obtain an epicenter map for the region of northern Algeria and the bordering areas, lying between 31°N- 38°N and 3°W-9°E for the period 1790-2000. This map which emphasizes the high degree of seismicity of the Atlas Mountains is completed by the focal solutions of twenty significant earthquakes of the period 1954-2000.The compressivestress regime suffered in the studied area, induced by the approaching movement of the Africa and Eurasia plates, is characterized by NNW-SSE horizontal direction inferred from the mean P axis direction of the focal mechanisms. A theoretical inter-plate velocity provides a N 330° direction in agreement with the convergence direction of the Africa and Eurasia plates obtained from the mean P axis. The mean calculated velocity is about 6 mm/year.
Algérie- Sismicité- Vitesse inter-plaques - Cartedes épicentres- Mécanismes au foyer
كلاع شريفة
.
ص 379-400.
Mahoui Karim
.
Ferfera Mohamed Yassine
.
pages 61-90.
Chikhi Mohamed
.
Diebolt Claude
.
pages 25-41.
Mous Latéfa
.
pages 528-544.
Millimono Thierno Mamadou
.
Toure Fanta
.
Diallo Ahmadou Sadio
.
Bamba Ibrahim Foungotin
.
pages 42-50.