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Single-station microtremor surveys for site characterization:A case study in Erzurum city,eastern Turkey

Earthquake Engineering and Engineering Vibration 2024年第3期23卷 563-576页

作者： Fatih Karsli Erdem Bayrak The Higher Education Credit and Hostels Institution Ministry of Youth and SportsErzurum 25240Turkey Earthquake Research Centre Ataturk UniversityErzurum 25240Turkey Department of Civil Engineering Ataturk UniversityErzurum 25240Turkey

The single-station microtremor method is one of the fastest,most reliable,and cheapest methods used to identify dynamic soil *** study utilizes 49 single-station microtremor measurements to identify the dynamic soil properties of the Hilalkent quarter of the Yakutiye district in *** dominant frequency and the amplification factor were calculated by using the nakamura horizontal/vertical spectral ratio(H/V)*** the soil dominant frequency values varied between 0.4 Hz and 10 Hz,the soil amplification factor changed between 1 and *** H/V values were acquired with lower frequency *** vulnerability index(K_(g))and shear strain parameters that are utilized to estimate the damage that may be caused by an earthquake were *** in the west side of the study area,higher K_(g) values were *** shear strain map was created with 0.25 g,0.50 g and 0.75 g bedrock accelerations,and soil types that lost elasticity during an earthquake were *** average shear wave velocity for the first 30 m(V_(s30))was ***,it was observed that the western part of the study area,which resulted in a higher period and higher H/V,higher K_(g) and lower V_(s30) values,presents a higher risk of damage during an earthquake.

关键词： nakamura horizontal/vertical spectral ratio single-station microtremor predominant frequency vulnerability index Erzurum

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