SS-1 Earthquake Sources, Hazard and Risk in the Southern Mediterranean: North Africa and Near East the observed values of costal uplift is compatible with the orientation of 338° is consistent with the predicted Africa- offshore continuation of the south Mitidja basin faults system. Eurasia plate motion direction of 330°. Three strike-slip events also show similar P-axes orientations. The fault plane orientation SEISMOTECTONIC EVIDENCES IN THE of the thrust mechanisms varies from E-W to near N-S. The ZEMMOURI-THENIA (ALGERIA) REGION BEFORE variability is well constrained by the waveform data indicating THE M=6.8 ZEMMOURI EARTHQUAKE OF MAY, changes in fault orientation and fault segmentation. 21 2003: THEIR RELATIONS WITH COSEISMIC RUPTURES FOCAL MECHANISM AND RUPTURE PROCESS A. BOUDIAF1, J. F. Ritz2, K. Yelles3 OF 2004 ALHOCEIMA (MOROCCO, MW=6.2) 1Me2i, Fresnes, France,
[email protected] or
[email protected]; EARTHQUAKE FROM TELESEISMIC AND 2Universite Montpellier II, Place Eugene Bataillon, Montpellier, France ; 3CRAAG, Bouzareah, Alger, Algérie REGIONAL BROAD-BAND DATA Numerical imagery and aerial photographs provide evidence of E. BUFORN1, M. Bezzeghoud2, C. del Freno1 , J.F. Borges2., A. past drainage diversions associated with known and inferred Udías1, C. Pro3 active faults in the region of Thenia-Zemmouri. The analysis of 1Dpto de Geofísica y Meteorología, Fac. CC. Físicas, Universidad drainage patterns provides useful information about the Complutense, Madrid (Spain),
[email protected]; 2Dpt. de Física. 3 evolution and recent history of faulting that may be difficult to Universidade de Évora and CGE, Évora (Portugal); Dpto de Física, Universidad de Extremadura, Mérida (Spain) obtain by conventional geological analysis.