Pemetaan tingkat risiko bencana tanah longsor di Kecamatan Wonosalam Kabupaten Jombang

  • Al Farisy M
  • Hartono R
  • Purwanto P
  • et al.
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Abstract

The Wonosalam District, located in Jombang Regency, East Java Province, has a history of multiple landslides in the last 5 years. This is because the district is situated in the Mount Anjasmara Area, part of a steep mountain range, resulting in a distinct geological structure and high slope. This makes the district highly susceptible to landslides, particularly due to its location. To mitigate potential losses from disasters, a mapping of the landslide risk level has been created to proactively address the issue. The landslide risk mapping is based on a geographic information system that incorporates scoring, weighting, and overlay techniques. The scoring and weighting process is in accordance with Perka BNPB No. 2 of 2012, and has been modified to suit the local conditions on the ground. The landslide disaster risk mapping produced results indicating the risk levels in 9 villages in the Wonosalam District. Out of these, Galengdowo, Distance, and Carangwulung Villages were classified as having a medium risk level, while the remaining 6 villages (Wonomerto, Sambirejo, Wonosalam, Panglungan, Wonokerto, and Sumberjo) were considered to have a low risk level. Kecamatan Wonosalam yang terletak di Kabupaten Jombang, Provinsi Jawa Timur, memiliki sejarah longsor dalam 5 tahun terakhir. Hal ini karena kabupaten ini terletak di Kawasan Gunung Anjasmara yang merupakan bagian dari rangkaian pegunungan yang terjal, sehingga menghasilkan struktur geologi yang khas dan kemiringan lereng yang tinggi. Hal ini membuat kabupaten ini sangat rentan terhadap tanah longsor, terutama karena lokasinya. Untuk memitigasi potensi kerugian akibat bencana, pemetaan tingkat risiko tanah longsor telah dibuat untuk secara proaktif mengatasi masalah tersebut. Pemetaan resiko tanah longsor didasarkan pada sistem data geografis yang mencampurkan metode skoring, pembobotan, serta overlay. Proses kajian serta pembobotan cocok dengan Perka BNPB Nomor. 2 Tahun 2012, serta sudah dimodifikasi cocok dengan keadaan setempat di lapangan. Pemetaan risiko bencana tanah longsor menghasilkan tingkat risiko di 9 desa di Kecamatan Wonosalam. Dari jumlah tersebut, Desa Galengdowo, Jarak, dan Carangwulung tergolong memiliki tingkat risiko sedang, sedangkan 6 desa lainnya (Wonomerto, Sambirejo, Wonosalam, Panglungan, Wonokerto, dan Sumberjo) tergolong memiliki tingkat risiko rendah.

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APA

Al Farisy, M. S., Hartono, R., Purwanto, P., & Susetyo, B. B. (2023). Pemetaan tingkat risiko bencana tanah longsor di Kecamatan Wonosalam Kabupaten Jombang. Jurnal Integrasi Dan Harmoni Inovatif Ilmu-Ilmu Sosial, 3(7), 773–783. https://doi.org/10.17977/um063v3i7p773-783

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