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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Tolis Ilmiah: Jurnal Penelitian
Dian Pratiwi Malik
Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences

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PENENTUAN NILAI INDEKS KERENTANAN SEISMIK DAERAH RAWAN LONGSOR METODE MIKROTREMOR DI KECAMATAN TOMBOLOPAO KABUPATENGOWA Malik, Dian Pratiwi; L, Muh Said; Ayusari, Ayusari
Tolis Ilmiah : Jurnal Penelitian Vol 3 No 1: Mei
Publisher : LPPM Universitas Madako Tolitoli

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56630/jti.v3i1.159

Abstract

Penelitian ini dilakukan untuk mengidentifikasi daerah rawan longsor di Kecamatan Tombolopao, Kabupaten Gowa. Penelitian ini bertujuan untuk mengetahui nilai frekuensi dominan (fo), faktor amplifikasi (Ao), indeks kerawanan gempa (Kg) dan mengidentifikasi karakteristik lokasi longsor di daerah penelitian. Pengambilan data menggunakan seperangkat alat Seismograf Digital Portable tipe TDL-3035 pada 8 titik penelitian dengan spasi 15 m. Data sinyal mikrotremor tersebut kemudian diolah dengan metode HVSR pada software Geopsy sehingga diperoleh kurva H/V yang menyatakan nilai fo dan Ao. Nilai fo dan Ao kemudian digunakan untuk mendapatkan indeks kerentanan seismik (Kg). Hasil yang diperoleh dari sebaran nilai frekuensi dominan berkisar antara 0,685 – 5,745 Hz, nilai faktor amplifikasi antara 1,927- 3,193, nilai indeks kerawanan gempa antara 0,646- 9,029 dan karakteristik lokasi longsor berdasarkan nilai parameter indeks kerawanan gempa yang diperoleh dari persamaan empiris frekuensi dominan dan amplifikasi faktor berada pada titik pengukuran MT1, MT3 dan MT4.Kata kunci : Tanah longsor, mikrotremor, metode HVSR
Lineament Geomorphologic Analysis to Identify Fault in Mount Semeru, East Java Malik, Dian Pratiwi; Maryanto, Sukir; Juwono, Alamsyah Mohammad
Jurnal Penelitian Pendidikan IPA Vol 9 No SpecialIssue (2023): UNRAM journals and research based on science education, science applic
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9iSpecialIssue.6143

Abstract

This research analyzes the morphological lineaments on Mount Semeru, East Java. The morphological lineament is processed using satellite imagery as a digital elevation model (DEM), downloaded on the Badan Informasi Geospasial (BIG) page. The image was processed using Global Mapper software with azimuth angles of 00, 450, 900, 1800, and 3150 and produced a lineament map that had been overlaid from all azimuth angles and created a morphological lineament map with various groups of values from high to low. From the analysis that has been carried out, it was found that there are 103 lineaments, most of which are spread in the area west of the crater of Mount Semeru, with the dominant direction showing a west-southwest – east-northeast orientation.
Co-Authors Ayusari, Ayusari Juwono, Alamsyah Mohammad Muh. Said L Sukir Maryanto