Analisa Potensi Longsor Menggunakan Metode Horizontal to Vertical Spectral Ratio dari Data Mikrotremor di DAerah Jalan Raya Trenggalek-Ponorogo KM 23

Rohman, Aulia'ur (2017) Analisa Potensi Longsor Menggunakan Metode Horizontal to Vertical Spectral Ratio dari Data Mikrotremor di DAerah Jalan Raya Trenggalek-Ponorogo KM 23. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada perbatasan wilayah Ponorogo-Trenggalek KM 23 sebagian besar didominasi oleh deretan gunung api kuarter. Sehingga, banyak sekali pegunungan, tebing, dan lereng yang curam pada sekitar Jalan Raya Trenggalek-Ponorogo KM 23. Kondisi tersebut mengakibatkan seringnya kejadian longsor yang dapat terjadi sewaktu-waktu. Dengan menggunakan data Mikrotremor metode Horizontal to Vertical Spectral Ratio dapat diketahui besarnya nilai Indeks Kerentanan Tanah (Kg) yang terdapat di daerah penelitian. Selanjutnya, nilai kerentanan tanah tersebut dikorelasikan dengan nilai percepatan getaran minimum di bawah permukaan. Hasil dari penelitian ini menunjukkan bahwa daerah dengan adanya retakan dan patahan memiliki nilai kerentanan tanah yang tinggi dan nilai percepatan getaran minimum yang rendah. ============ In the border zone of Trenggalek and Ponorogo (KM23) is dominated by quarter volcanoes therefore several geological structures such as mountainous area, cliff and steep slope in those area. These geological condition causes the stability of slope in the area is low and the landslide can be occurred at any moment. By using data of microtremor Horizontal to Vertical Spectral Ratio method can be obtained value of soil vulnerability index (Kg) which has founded in research area. Furthermore, the value of soil vulnerability indices also correlated with minimum vibration acceleration in subsurface. The result are area within crack and fracture have the higher value of soil vulnerability indices and the lower value of vibration acceleration of rocks

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Horizontal to vertical spectral ratio; Indeks kerentanan tanah; Mikrotremor; dan Percepatan getaran minimum; Vulnerability indices; Minimum vibration acceleration
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
G Geography. Anthropology. Recreation > G Geography (General) > G70.212 ArcGIS. Geographic information systems.
G Geography. Anthropology. Recreation > GB Physical geography
G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QE Geology
Divisions: Faculty of Mathematics and Science > Physics > (S1) Undergraduate Theses
Depositing User: AULIA'UR ROHMAN
Date Deposited: 25 Jan 2018 03:42
Last Modified: 25 Jan 2018 03:42
URI: http://repository.its.ac.id/id/eprint/50540

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