Tomographic Imaging of Upper Mantle P-wave Velocity Heterogeneity Beneath the Arabian Peninsula

摘要

We report preliminary estimates of three-dimensional P-wave velocity structure beneath the Arabian Peninsula estimated from travel time delay tomography. We have completed travel time measurement and inversion of a partial data set provided by King Abdulaziz City for Science and Technology (KACST). This study builds on previous work by Benoit et al. (2003) following the methods of Van der Carr and Crosson (1990) and Van der Carr (1990). Data were collected from the Saudi Arabian National Digital Seismic Network (SANDSN) operated by KACST. The network consists of 38 stations (27 broadband and 11 short-period). We augmented the KACST data with delay times measured from permanent Incorporated Research Institutions for Seismology (IRIS) stations in the region (RAYN, EIL and MRNI). Travel time delay data from Benoit et al. (2003) was not included in the inversions discussed below, but will be included in future analysis.