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All Journal Jurnal Fisika dan Pembelajarannya Wahana Fisika : Jurnal Fisika dan Terapannya Jurnal Sains Dasar Widyariset INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Widyariset Makara Journal of Science
Denny Darmawan
Universitas Negeri Yogyakarta
Aerospace Engineering Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics

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Journal : Wahana Fisika : Jurnal Fisika dan Terapannya

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IDENTIFIKASI DAERAH LONGSOR KECAMATAN BAGELEN MENGGUNAKAN METODE MIKROTREMOR Petiwi, Gofur Dyah Ayu Gilang; Wibowo, Nugroho Budi; Darmawan, Denny
Wahana Fisika Vol 3, No 2 (2018): December
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/wafi.v3i2.12740

Abstract

Kecamatan Bagelen merupakan wilayah di sisi barat Pegunungan Menoreh yang mengalami tanah longsor akibat adanya perubahan kondisi geologi menjadi material lepas dan terlongsorkan. Penelitian ini bertujuan untuk mengetahui karakteristik daerah longsor di Kecamatan Bagelen berdasarkan persebaran dan pemodelan parameter mikrotremor, yaitu frekuensi predominan, faktor amplifikasi, ketebalan lapisan sedimen, dan indeks kerentanan seismik. Data mikrotremor diolah dengan metode HVSR dan metode Ellipticity Curve. Hasil penelitian menunjukkan bahwa nilai  daerah longsor adalah 6-8 Hz, nilai  adalah 6-7, dan nilai  adalah 5×10−4 - 1,1×10−3 s2/m. Ketiga parameter tersebut berada dalam kategori sedang hingga tinggi serta nilai ketebalan sedimen 20-50 m.Bagelen District located in the west of Menoreh Mountain that had landslide caused by deformation. The research aimed to characterize the landslide area in Bagelen District based on microtremor parameters: predominant frequency, amplification factor, sediment layer thickness, and seismic vulnerability index. Data in the form ofmicrotremor signals were then processed by HVSR and ellipticity curve method. The results of the research showed that the value of 𝑓0 ranged from 6 to 8 Hz, the value of 𝐴 ranged from 6 to 7, the value of 𝐻 ranged from 20 to 50 m and the value of 𝐾𝑔 ranged from 5×10−4 - 1,1×10−3 s2/m. The parameter was on medium and high categories with 20 - 50 m sediment layer thickness.
Co-Authors A. R. U. Fadilah Ahmad Bayhaqi Alfarisa, Suhufa Aziz, Khafidh Nur Bambang Ruwanto Eddy Hermawan Kautsar Fadlih Akbar Khafidh Nur Aziz Khikmah Muliati Nugroho Budi Wibowo Nurhayati Nurhayati Petiwi, Gofur Dyah Ayu Gilang R. N. Safitri R. Y. A. Sari Saputra, Antonni Suparno Suparno Wipsar Sunu Brams Dwandaru wipsar sunu brams dwandaru Wipsar Sunu Brams Dwandaru Yosaphat Sumardi