Andrianto, NIM. 13620050 (2018) ANALISIS DAERAH KAWASAN RENTAN TANAH LONGSOR MENGGUNAKAN DATA MIKROSEISMIK DI DESA GAYAMHARJO KECAMATAN PRAMBANAN KABUPATEN SLEMAN. Skripsi thesis, UIN SUNAN KALIJAGA.
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Text (ANALISIS DAERAH KAWASAN RENTAN TANAH LONGSOR MENGGUNAKAN DATA MIKROSEISMIK DI DESA GAYAMHARJO KECAMATAN PRAMBANAN KABUPATEN SLEMAN)
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Text (ANALISIS DAERAH KAWASAN RENTAN TANAH LONGSOR MENGGUNAKAN DATA MIKROSEISMIK DI DESA GAYAMHARJO KECAMATAN PRAMBANAN KABUPATEN SLEMAN)
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Abstract
Gayamharjo village Prambanan subdistrict Sleman regency has steep hills morphology. In the rainy season, the material on the slope is easier to move down and causing landslides. To reduce the risk, microtremor measurements were conducted to map landslide prone area in Gayamharjo village. Microtremor acquisition were performed at 1600 m2. The microtremor data was taken on 25 observation points with 100 meters spacing as primary. Selected microtremor data were processed by Horizontal to Vertical Spectral Ratio (HVSR) method to get dominant frequency and site amplification value. Both of parameters are used to calculate the quantitative parameters, such as layer thickness weathered, seismic vulnerability index and the value of shear strain. Shear strain value represents deformation on the surface, such as cracks, settlement, and landslides. From HVSR process, dominant frequency and site amplification were obtained. Dominant frequency varies at 1,21 to 14,45 Hz and site amplification varies at 0,73 to 29,79. Shear strain that obtained empirically from the frequency and amplification varies at 6,74 x 103 to 1,67 x 101. The highest value of shear strain in this AD18 observation area. The highest value of shear strain in this study shows ground settlement phenomenon, and the lowest shows cracks phenomenon. Finally, Shear Strain and slope class were multiplied to obtain landslide potential.
| Item Type: | Thesis (Skripsi) |
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| Additional Information: | Dr. Thaqibul Fikri Niyartama, M.Si. |
| Uncontrolled Keywords: | Landslides, Microseismic, HVSR method, Shear Strain |
| Subjects: | Fisika |
| Divisions: | Fakultas Sains dan Teknologi > Fisika (S1) |
| Depositing User: | Sugeng Hariyanto, SIP (sugeng.hariyanto@uin-suka.ac.id) |
| Date Deposited: | 03 Oct 2018 09:53 |
| Last Modified: | 03 Oct 2018 09:54 |
| URI: | http://digilib.uin-suka.ac.id/id/eprint/30331 |
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