This paper reports the results of a case study of the application of the microtremor exploration method in western Turkey. We have conducted microtremor surveys at strong motion stations in Aydin and Denizli provinces to derive shallow S-wave velocity profiles. Array records of vertical microtremor motion were acquired at 12 and 15 stations in Aydin and Denizli provinces, respectively. A spatial autocorrelation analysis was applied to the records to estimate Rayleigh wave phase velocities in the frequency range of 3–30 Hz. Then, the phase velocity dispersion at each station was inverted to a one-dimensional S-wave profile down to a maximum depth of about 50 m. The soil models at 5 and 11 stations in Aydin and Denizli provinces, respectively, have a bedrock with an S-wave velocity of 400–600 m/s at depths less than 10 m. The spatial distribution of average S-wave velocities in the top 30 m of the revealed profiles shows low values in the Büyük Menderes Graben and the Denizli Basin, and high values in the surrounding hill or mountain areas. We compared our S-wave profiles with those from previous surface-wave studies. S-wave velocities in shallow parts to a depth of 5–10 m are similar in the two studies. However, S-wave velocities in deep parts are different at some of the stations.

本文报告了微震勘探方法在土耳其西部应用的案例研究结果。我们在艾登省和代尼兹利省的强运动台进行了微震调查，以得出浅S波速度剖面。垂直微震运动的阵列记录分别在艾登省和代尼兹利省的12个站和15个站获得。对记录进行空间自相关分析，以估计3-30 Hz频率范围内的瑞利波相位速度。然后，将每个站的相速度色散反转为一维S波剖面，最大深度约为50 m。艾登省和代尼兹利省的5个站和11个站的土壤模型分别在小于10 m的深度具有基波，其S波速度为400–600 m / s。所揭示剖面顶部30 m的平均S波速度的空间分布表明，比尤克·曼德雷斯·格拉本和德尼兹利盆地的数值较低，而周围丘陵或山区的数值较高。我们将S波剖面与之前的表面波研究进行了比较。在两项研究中，浅部至5–10 m深度的S波速度相似。但是，某些台站深部的S波速度不同。