DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
ADA505255
Title:
Seismic Tomography of the Arabian-Eurasian Collision Zone and Surrounding Areas
Descriptive Note:
Conference proceedings
Corporate Author:
MASSACHUSETTS INST OF TECH CAMBRIDGE
Report Date:
2009-09-30
Pagination or Media Count:
11.0
Abstract:
The objectives of this study are to determine P- and S-wave velocity structures in the crust and upper mantle, and to characterize seismic wave propagation in the Arabian-Eurasian collision zone and surrounding areas, including Iran, Arabia, Eastern Turkey, and the Caucasus. The Arabian-Eurasian plate boundary is a complex tectonic zone shaped by continent-continent collision processes. In recent years the number of seismic stations has increased greatly in the region because of expanded seismic networks in Azerbaijan, Turkey, Iran and the Gulf countries. We have been collecting the data through cooperation with individual network operators and the countries. Considerable effort has been directed to collecting P and S seismic arrival time data recorded by the new networks in Iran. Using arrival time data we obtained Pn and Sn images of the uppermost mantle beneath Arabian-Eurasian Collision Zone t-J including Iran, the Caucasus, and the Arabian Peninsula by tomographic inversion. With the newly obtained data from Central Asia incorporated into our database, we improved the ray coverage in our study region. Our current plan is to utilize the new data from Iran to improve the velocity models. This effort will include tomographic inversions for velocity structure in the crust and upper mantle, relocation of all events, and the validation of models using synthetic seismograms to fit available broad-band waveforms.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
