چکیده مقاله
Seismic scattering is commonly observed and results from wave propagation in a heterogeneous medium Body to surface wave scattering originates from strong lateral heterogeneity In this study, we present the results of an analysis on body to surface wave scattering in the region of Turkey, performed using teleseismic recordings from 82 broadband stations of temporary and permanent networks The type of scattering we consider is the conversion of the SH wave to Love wave from geological scatterers For the earthquake source, we use the 27 July 2014 earthquake Mw=6 4 in the Atlantic Ocean We apply phase coherence analysis to broadband waveforms to detect coherent signals associated with body to surface wave scattering The scattered Love waves in our study traveled at a dominant period of ~10 s and a velocity of ~3 17 km/s We utilize the converted surface waves to map strong lateral heterogeneities in the West of Turkey We located the sources of scattering by back propagating the beamformed energy using a straight ray approximation for the earthquake Back projection suggests that strong scattering is associated with the IAESZ Izmir Ankara Erzincan Suture Zone in the West of Turkey This major suture zone and its steep topographic slope could play a role in scattering seismic waves The results show that strong lateral heterogeneities in seismic wave velocity or density, such as suture zone and fault zone structures, are potentially strong scatterers
کلیدواژهها
نویسندگان
Maryam Gashmard
Ph D in Geophysics, Institute for Advanced Studies in Basic Sciences, Zanjan, Iran
Shahrouz Gashmard
MSc in Medical Engineering, Shiraz University, Shiraz, Iran
شیوه ارجاع
Gashmard, Maryam and Gashmard, Shahrouz,1404,Seismic Scattering from Geological Scatterers in the IAESZ Region, West Turkey,11th National Conference on Interdisciplinary Research in Engineering and Management,Tehran
ارائهشده در
مجموعه مقالات یازدهمین همایش ملی تحقیقات میان رشته ای در علوم مهندسی و مدیریت31 تیر 1404 · تهران