Soil Characterization in Landslide-Prone Areas Using Ground Shear Strain Based on Active and Passive Source Surface Wave Methods

IF 1.9 4区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

pure and applied geophysics Pub Date : 2025-03-13 DOI:10.1007/s00024-025-03696-0

Ozgenc Akin, Nilgun Sayil

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引用次数: 0

Abstract

The Black Sea Region in Türkiye, particularly Degirmendere Valley in Trabzon, is highly susceptible to landslides due to steep slopes and heavy rainfall. This study focuses on predicting landslide behavior which is highly important by characterizing soil conditions in both active and paleo-landslide areas using surface wave methods. The shear wave velocity was determined using the Multichannel Analysis of Surface Waves (MASW) and Rayleigh Wave Ellipticity (RWE) techniques. Additionally, soil parameters like predominant period, frequency, and amplification were obtained using Horizontal to Vertical Spectral Ratio (HVSR) and Standard Spectral Ratio (SSR) methods. Ground shear strains (GSS), which indicate landslide susceptibility, were also calculated. Results show that landslide-prone areas were classified as D (NEHRP). These areas indicate predominant periods of 0.83–1.35 s, site amplifications of 5–6, Vs₃₀ values between 279–458 m/s, and GSS ranging from 10^–1 to 10^–2. In contrast, non-landslide-prone areas were classified as C (NEHRP), with predominant periods of 0.12–0.53 s, lower amplifications of 1–2, Vs₃₀ values between 300 and 782 m/s, and GSS of 10^–3–10^–4. This data is critical for understanding and mitigating landslide risks in the region.

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基于主动和被动源表面波法的地表剪切应变滑坡易发区土壤特征研究

t rkiye的黑海地区，特别是特拉布宗的Degirmendere山谷，由于陡峭的斜坡和强降雨，极易发生山体滑坡。本研究的重点是预测滑坡行为，这是非常重要的，利用表面波方法来表征活跃和古滑坡区的土壤条件。利用多通道表面波分析（MASW）和瑞利波椭圆度（RWE）技术确定了剪切波速。此外，利用水平与垂直光谱比（HVSR）和标准光谱比（SSR）方法获得了土壤的优势周期、频率和放大等参数。计算了反映滑坡易感性的地面剪切应变。结果表明，滑坡易发区为D级（NEHRP）。这些区域的优势周期为0.83 ~ 1.35 s，站点扩增值为5 ~ 6，Vs30值为279 ~ 458 m/s， GSS值为10 ~ 1 ~ 10 ~ 2。非滑坡易发区为C级（NEHRP），优势周期为0.12 ~ 0.53 s，放大倍数为1 ~ 2，Vs30值在300 ~ 782 m/s之间，GSS值为10-3-10-4。这些数据对于了解和减轻该地区的滑坡风险至关重要。

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来源期刊

pure and applied geophysics 地学-地球化学与地球物理

CiteScore

4.20

自引率

5.00%

发文量

240

审稿时长

9.8 months

期刊介绍： pure and applied geophysics (pageoph), a continuation of the journal "Geofisica pura e applicata", publishes original scientific contributions in the fields of solid Earth, atmospheric and oceanic sciences. Regular and special issues feature thought-provoking reports on active areas of current research and state-of-the-art surveys. Long running journal, founded in 1939 as Geofisica pura e applicata Publishes peer-reviewed original scientific contributions and state-of-the-art surveys in solid earth and atmospheric sciences Features thought-provoking reports on active areas of current research and is a major source for publications on tsunami research Coverage extends to research topics in oceanic sciences See Instructions for Authors on the right hand side.