Landslide delineation using Shear wave velocity, Poisson's ratio, and Gss parameter analysis for the case study of the Ngasinan landslide, Banyumanik, Semarang Indonesia
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Full Text |
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Author |
Nurwidyanto M. I. and Yuliyanto G.
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e-ISSN |
1819-6608 |
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On Pages
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426-433
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Volume No. |
19
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Issue No. |
7
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Issue Date |
May 30, 2024
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DOI |
https://doi.org/10.59018/042459
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Keywords |
poisson ratio, Vs, GSS, landslide, HVSR, micro tremor.
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Abstract
In this study, ground motion delineation was carried out using shear wave velocity (vs) analysis, Poisson's ratio, and Ground Shear Strain (GSS). This data was obtained from inversion of micro tremor data which produces compression wave velocity and shear wave velocity. The results of the inversion are then carried out in 2D modeling so that the values of the landslide area can be compared with the values of the surrounding area. The landslide area in the Ngasinan area has a shear wave velocity value of less than 750 m/s, a Poisson's ratio value of 0.3, and an iso value of shear wave velocity that reaches a length of 50 m to the west. Based on the analysis, it was found that there was a possibility of increasing landslide area from this point, namely towards the north, namely towards the river at the bottom of the basin, and towards the west as high as 120 m.
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