Title : Magmatic intrusions and faulting play a central role in facilitating seismicity of the main Ethiopian rift (MER)
Abstract:
In this review paper, we evaluated earthquake source parameters compiled from different previous studies and international databases at the regional level. Earthquakes are distributed on the rift floor and rift margins. Predominantly normal faulting is observed, but some strike-slip events are also observed. Normal faulting mechanisms are consistent with the divergence of the major plates in the area, while the strike-slip events might be associated with transfer zones. The majority of the focal depths of earthquakes are found within the upper crust. Significant numbers of earthquakes with focal depths within the lower and upper mantle are also observed, a deeper value than has been observed previously in the region. The observed focal depth may suggest a widespread deformation throughout the crust and uppermost mantle. The current review paper will add more details on the source processes and seismogenic depth of earthquake occurrences in the studied area.
