آلية البؤر الزلزالية و تحديد اتجاهات حقل الإجهادات التكتونية الحالية باستخدام تسجيلات الشبكة الرقمية في المركز الوطني للزلازل في سورية (NEC-Syria)‎

Abstract EN

This work aims to identify seismic focal mechanism of initial polar P wave and determining the current tectonic stress field trends based on earthquakes recorded by digital network in Syria during the period from 2009 until 2011.

35 events (ML≥ 2) have been studied and analyzed, each of them was recorded at 6 stations at least.

The analysis showed that 16 events (46% of the total events) are due to normal faulting mechanism, 12 events (34%) are due to reverse faulting mechanism, and 7 events (20%) are due to strike slip faulting mechanism.

Five seismic activity groups have been identified in the following regions: north-eastern part of Damascus Fault, northern Palmyrid Fold Belt, Hama region, north Syrian Coastal ranges, Amanous Mountains.

In addition, the present day stress fields in these regions were determined.

They show different orientations of the stress axes due to the complexity of the geological structures dominated in these regions.