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All Journal Indonesian Journal of Geography Jurnal Ilmu Lingkungan Media Komunikasi Geografi Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Majalah Geografi Indonesia IJOG : Indonesian Journal on Geoscience Jurnal RISET Geologi dan Pertambangan Forum Geografi MAJALAH ILMIAH GLOBE JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Journal of Informatics, Information System, Software Engineering and Applications (INISTA) Journal of Electrical Engineering and Computer (JEECOM) Jurnal Geografi LIngkungan Tropik (Journal of Geography of Tropical Environments)
Danang Sri Hadmoko
Fakultas Geografi, Universitas Gadjah Mada, Yogyakarta, Indonesia
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Social Sciences Other

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Estimasi Ukuran Butir Pasir Menggunakan Citra Sentinel-2 pada Sungai Rejali, Kabupaten Lumajang Fathoni, Mohammad Naufal; Hadmoko, Danang Sri; Wibowo, Sandy Budi
Journal of Electrical Engineering and Computer (JEECOM) Vol 5, No 2 (2023)
Publisher : Universitas Nurul Jadid

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33650/jeecom.v5i2.6568

Abstract

Lahar hujan merupakan suatu fenomena kebencanaan yang mengancam daerah sekitar gunungapi, namun juga memiliki dampak positif berupa potensi pertambangan yang besar. Berdasarkan hal tersebut perlu adanya pengelolaan dan perencanaan, didukung oleh informasi spasial yang memadai salah satunya adalah ukuran butir. Berkembangnya produk penginderaan jauh dan sistem informasi geografi dapat digunakan sebagai penyedia data spasial ukuran butir. Fokus penelitian ini adalah pemanfaatan Citra Sentinel-2 melalui indeks ukuran butir untuk mengestimasi ukuran butir menggunakan pendekatan empiris. Tahap penelitian terdiri dari pra-pemrosesan citra, pengambilan ukuran butir lapangan, analisis laboratorium, pemodelan empiris, dan identifikasi sebaran ukuran butir. Hasil penelitian menunjukkan indeks ukuran butir berkorelasi terhadap ukuran butir dan dapat digunakan sebagai variabel pemodelan. Ukuran butir pada lokasi penelitian berkisar antara -0.050 Φ sampai 11.828 Φ. Nilai validitas tergolong baik dikarenakan model memiliki nilai kesalahan estimasi yang setara dengan satu kelas ukuran butir. Distribusi ukuran butir menunjukkan semakin jauh transportasi material diiringi dengan semakin kecilnya ukuran butir.
Multi-Hazard Analysis in Gunungkidul Regency Using Spatial Multi-Criteria Evaluation Mustikaningrum, Melati; Widhatama, Adrianus Farrel; Widantara, Khrisna Wasista; Ibrohim, Mirza; Hibatullah, Muhammad Fikri; Larasati, Rinanda Amdalista Prastia; Utami, Sri; Hadmoko, Danang Sri
Forum Geografi Vol 37, No 1 (2023): July 2023
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v37i1.19041

Abstract

This study has two aims: to determine the spatial distribution of multi-hazard levels and to discover the interactions, interdependencies, and effects that cascade among hazards in Gunungkidul Regency, Special Region of Yogyakarta. A multi-hazard map was created with a scale of 1:250,000 and modelled using SMCE (Spatial Multi-Criteria Evaluation). The conditioning factors used included slope, rainfall, historical data, river distance, geomorphology, land cover, lithology, and fault distance. The selected conditioning factors for each hazard were then weighted using weighted overlay analysis. The results showed that the area of Gunungkidul can be included in the high-risk category for floods, since the probability of flooding is 56.72%, the probability of landslides is 9.14%, that of drought is 48.86%, and that of seismic disturbance is 20.83%. (Multi-hazard maps are created by overlaying flood, landslide, seismic, and drought hazard maps.) After these risk factors were calculated, the regions on the multi-hazard map were re-categorized into five hazard classes. All areas in Gunungkidul Regency have multiple hazards, with risk factors of different magnitudes. The interaction between hazards can generate new hazards that are called cascading hazards. The cascading hazards in the study area are most likely to occur in the north of Gunungkidul Regency with its very high seismic and landslide hazard risk factors, due to the geological and geomorphological conditions of the Baturagung Structural Hills.
Co-Authors Aditya Saputra Agniy, Romza Fauzan Ahmad Cahyadi **) Ahmad Hidayat Alvyntha Glaudia Ardianingrum Andi Dharmawan Andung Bayu Sekaranom Asrofi, Akhmad Astabella, Relinda Dewi Bambang Sukatja, Bambang Christopher Gomez, Christopher Danang Eko Nuryanto Daryono, D Erwin Eko Wahyudi Estuning Tyas Wulan Mei Estuning yas Wulan Mei Fathoni, Mohammad Naufal Ferad Puturuhu Franck Lavigne, Franck Handayani, Tiara Hayat, Dimas Maula Hermawan, Hannan Revi Hibatullah, Muhammad Fikri Hizbaron, Dyah R. Ibrohim, Mirza Jean-Claude Thouret, Jean-Claude Junun Sartohadi Kurniawan, Verry Octa Laksono, Agung Larasati, Rinanda Amdalista Prastia Lutfhi Muta’ali Malawani, Mukhamad Ngainul Malawani, Mukhamad Ngainul Mardiyanto, Mardiyanto Muh Aris Marfai Muh. Aris Marfai Muhammad Auzan Mustikaningrum, Melati Mutaqin, Bachtiar Wahyu Nanang Susyanto Nanette Kingma Nugroho, Eko Setya Prakosa, Sigit Hadi Pratiwi, Dinda Pratiwi, Elok Surya Projo Danoedoro Putra, Mega Dharma Rachmadan, Firdaus Alif Ramlah Ramlah Samodra Wibawa Samodra, Guruh Sandy Budi Wibowo Sasongko, Mohamad Haviz Damar Setiawan, M. Anggri Setyawan, Nicky Sri Rum Giyarsih Sri Utami Sudibyakto Sudibyakto Suratman Suratman Syamsuddin Syamsuddin Syarifah Aini Dalimunthe, Syarifah Aini Tiara Handayani Verry Octa Kurniawan Westen, Cees van Wibisono, Hafidz Widagdo, Brianardi Widantara, Khrisna Wasista Widhatama, Adrianus Farrel Yoga, Aldhila Gusta H. Zayinul Farhi