# Seismic and Geodetic Crustal Moment-Rates Comparison: New Insights on the Seismic Hazard of Egypt
## 6 Delimitation of Seismic Sources
### Seismic Sources along the Gulf of Aquba-Dead Sea Transform Fault System (EG-01 to EG-04)
Available focal mechanisms show abundant strike-slip faulting solutions (Figure 5), while some few mechanisms are characterized by strike-slip faulting coupled with a minor normal component. The third proposed source (EG-03; see Figures 3-5) was delimited to cover the seismicity along the Dead Sea Basin, Jordan Valley, Kinect-Hula Basin, and the Lebanese Splay in the southern and central sector of the GoA-DST (Figure 1b). The Dead Sea Basin is bounded by a double left-lateral strike-slip fault system, the Arava Fault (from the east) and the Jordan/Jericho Fault (from the west) [72] (see Figure 1b). The Jordan Valley links the Dead Sea Basin (from the south) and the Hula Basin (from the north) [23; 38]. To the north, the Hula \"Shamir-Almagor Fault\" and Kinect \"Kineret-Sheikh Ali Fault\" Basins are located [73] (see Figure 1b). These two basins present seismic activity up to the Yammuneh Fault (Lebanese Splay). A number of 43 historical earthquakes, within the period from 1020 B.C. to 1802 are reported within this source (Figure 3). The largest observed historical earthquakes are the 746 (XI, Mw 7.7), 2 June 1201 (X-XI, Mw 7.4), and 30 October 1759 (X-XI, Mw 7.4) events (Figure 3). Most of the focal mechanism solutions within this seismic source reflect left-lateral strike-slip faulting solutions (Figure 5). However, some solutions also show normal-faulting mechanisms, reflecting the seismic activity along the N-S striking longitudinal normal faults extending along the Dead Sea Basin [33; 38; 74]. EG-04 (Figures 3-5) was defined to cover the seismic activity within the central-eastern part of the Sinai Peninsula, as well as the activity along the Mediterranean Sea coast of Palestine (see Figure 1). Among the active faults included in this source, there is the Themed Fault (Ragabet El-Naam shear zone in Figure 1b), an E-W striking right-lateral strike-slip fault, located in central Sinai [75]. It cuts the Tih Plateau in central Sinai, and links the Suez Rift (from the east) and the GoA-DST (from the west) [45]. Towards the north from the Themed Fault, a narrow ENE-oriented fault belt corresponds to [PERSON] et al. [34] central Sinai-Negev shear zone (Minsherah-Abu Kandu shear zone in Figure 1b). Although this source (EG-04) is located between the high seismic activity along the GoA-DST (EG-02 and EG-03) and the seismicity along the Cyprian Arc in the Eastern Mediterranean, it is characterized by relatively lower seismic activity than its surroundings. A number of 35 historical earthquakes (between 1180 B.C. and 1546) are reported within the boundaries of this source (Figure 3). The largest ones among them are the 748 (XI, Mw 7.7) and the 4 January 1034 (X-XI, Mw 7.4) earthquakes (Figure 3), in which the first one corresponds to the largest observed magnitude within the seismic record in this source (Figure 4). The focal mechanism solutions within this source are reflecting mostly strike-slip faulting solutions with a minority of the normal-faulting style (Figure 5).