Date of Graduation
12-2025
Document Type
Thesis
Degree Name
Master of Science in Civil Engineering (MSCE)
Degree Level
Graduate
Department
Civil Engineering
Advisor/Mentor
Wood, Clinton
Committee Member
Braham, Andrew
Second Committee Member
Barry, Michelle
Keywords
Deformation Zone Width; Earthquakes; East Anatolian Fault; Shear wave velocity; Site Characterization; Turkiye
Abstract
In May 2024, seismic testing was conducted at 20 sites along the East Anatolian Fault (EAF) and the Narli Fault in southeastern Türkiye. Data collection included P-wave refraction, multichannel analysis of surface waves (MASW), passive source microtremor array measurements (MAM), and horizontal to vertical spectral ratio (HVSR) testing. Previous displacement and deformation zone width measurements were compared to the measured shear wave velocity data. The experimental Rayleigh wave dispersion data was developed and inverted in Geopsy to produce shear wave velocity profiles for each site. The HVSR measurements resulted in acceptable peaks at only a select number of sites. The shear wave velocity profiles showed that Sites 1 through 6 had higher shear wave velocities than later sites. These sites are in or near the mountain range on the northern side of the EAF. Sites 7 through 14 had lower shear wave velocities, as they are in a basin between two mountain ranges, with the softest sites being Sites 10 and 11 sitting in the bottom of the basin area. Sites 15-17 have higher shear wave velocities than Sites 10-14 and sit lower in elevation as they are on the southern end of the fault. Sites 18 through 20 sit along the Narli fault. In general, the stiffness of the area decreases moving south along the Narli fault. There are notable differences on either side of the fault line at Site 13, Site 15, and Site 19, where measurements were performed on both sides of the fault. There is not a significant trend in the relationship between shear wave velocity and displacement, with significant variability in the correlation. The correlation between shear wave velocity and deformation zone width shows a general downward trend with significant variability, where velocity decreases as deformation zone width increases.
Citation
Simpson, A. (2025). Shear Wave Velocity Measurements Along the East Anatolian and Narli Faults. Graduate Theses and Dissertations Retrieved from https://scholarworks.uark.edu/etd/6099
