Shear Wave Velocity Modeling Down To Thirty Meter Depth At Some Localities In Giza Governorate Using Multi-Channel Analysis Of Surface Waves Technique

Ahmed Saleh Hanafy Abd Elghany;

Abstract


In order to quantify the near-surface seismic properties (P- and S-wave velocities, and the dynamic elastic properties) with respect to the depth for a specific areas (Aquaz, Atf, Bedsa, El-Gammal and Zaweit Dahshour), we conducted a non-invasive and low cost active seismic survey. The primary wave velocity is determined by conducting a P-wave shallow seismic refraction survey. The dispersive characteristics of Rayleigh type surface waves were utilized for imaging the shallow subsurface layers by estimating the 1D depth and the 2D depth and surface location shear wave velocities. The reliability of the Multi-channel Analysis of Surface Waves (MASW) depends on the accurate determination of the phase velocities for horizontally traveling fundamental mode Rayleigh waves. Consequently, the elastic properties are evaluated empirically. The Vs30 (average shear wave velocity down to 30 m depth), which is obtained from the MASW technique, plays a critical role in evaluating the site response of the upper 30 m depth. The distribution of the obtained values of Vs30 through the studied areas demonstrates sites classes of C and D, according to the NEHRP (National Earthquake Hazard Reduction Program) and IBC (International Building Code) standards. Accordingly, these


Other data

Title Shear Wave Velocity Modeling Down To Thirty Meter Depth At Some Localities In Giza Governorate Using Multi-Channel Analysis Of Surface Waves Technique
Authors Ahmed Saleh Hanafy Abd Elghany
Issue Date 2018

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