HR: 0800h
AN: S51E-1064    [Abstracts]
TI: Uppermost mantle Pn Velocity of the Arabian Plate, a Preliminary study
AU: * Al-Lazki, A I
EM: lazki@squ.edu.om
AF: Sultan Qaboos University, College of Science Department of Earth Sciences, P.O. Box 36, Alkhod, 123 Oman
AU: Al-Damegh, K S
S51E-1064 AF: King Abdulaziz City for Science and Technology, Riyadh, Riyadh, 12 Saudi Arabia
AU: Al-Enizi, A
S51E-1064 AF: 3Kuwait Institute for Science and Research, Kuwait, Kuwait, 21 Kuwait
AU: Elhusain, I
S51E-1064 AF: Sultan Qaboos University, Earthquake Monitoring Center, P.O. Box 50, Alkhod, 123 Oman
AU: Al-Mahrooqi, I
S51E-1064 AF: Sultan Qaboos University, College of Science Department of Earth Sciences, P.O. Box 36, Alkhod, 123 Oman
AB: The Arabian plate represents a unique tectonic setup. The uniqueness of this plate is its boundaries that constitute the three known types of plate boundaries. The Red Sea and the Gulf of Aden represent the south and southwest plate boundary with Africa plate. Farther north the Dead Sea Fault system represents the remainder of the northwestern boundary with Africa plate. Continent-continent collision along the Bitlis-Zagros Suture zones represents the northern and northeastern boundary with Eurasia plate. Farther south the convergent plate boundary is manifested by the Makran Subduction Zone. Finally, the Owen and Murray Transform Faults represent the southeast boundary of Arabia with India plate. The broad objective of this study is to map uppermost mantle Pn velocity and anisotropy within the Arabian plate and around its boundaries. Zones that are along the north and the northeast boundaries of Arabia plate historically and in recent years has been effected by devastating earthquakes, a recent example is the Bam earthquake on December, 2003. In this region, accurate earthquake location is essential to delineate seismically active zones, where, without proper velocity models for the region, located earthquake may have large location error. In this preliminary study we present uppermost mantle Pn velocity tomography results of the north and northeastern regions of Arabia plate. We used in this study Pn phase data from the bulletins of Oman Seismic Network, Saudi Seismic Network, Kuwait Seismic Network, International Seismological Center and the National Earthquake Information Center,USA.
DE: 1212 Earth's interior: composition and state (7207, 7208, 8105, 8124)
DE: 1236 Rheology of the lithosphere and mantle (7218, 8160)
DE: 7208 Mantle (1212, 1213, 8124)
DE: 7218 Lithosphere (1236)
DE: 7270 Tomography (6982, 8180)
SC: Seismology [S]
MN: Fall Meeting 2005