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All Journal Bulletin of Scientific Contribution : Geology Journal of Geosciences and Applied Geology
Nur Khoirullah
Fakultas Teknik Geologi Universitas Padjadjaran
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science

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AKTIVITAS TEKTONIK BERDASARKAN KARAKTERISTIK MORFOMETRI DI DAS CIBANTEN, PROVINSI BANTEN MUHAMMAD HERYOGA MATUZA; Raden Irvan Sophian; Nur Khoirullah
Bulletin of Scientific Contribution: GEOLOGY Vol 19, No 3 (2021): Bulletins of Scientific Contribution : Geology
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc geology.v19i3.35942

Abstract

Daerah penelitian secara geografi berada di DAS Cibanten, Serang, provinsi Banten. Daerah ini terdiri dari batuan vulkanik kwarter, memiliki kenampakan alam yang bervariasi dan juga terdapat sesar di sekitar daerah penelitian. Penelitian dilakukan dengan menggunakan data sekunder.  Daerah penelitian dipelajari untuk mengetahui kondisi geologi, identifikasi aktivitas tektonik dengan analisis kuantitatif pada parameter morfometri berupa rasio percabangan sungai (Rb), indeks gradien sungai (SL), asimetri pengaliran (AF) bentuk sungai (Bs), serta sinusitas muka gunung (Smf). Pola kelurusan sungai dominan berorientasi barat laut-tenggara Dari keenam parameter diperoleh nilai yang menunjukkan daerah penelitian memiliki tingkat aktivitas tektonik yang bervariasi, dari aktif hingga tidak aktif, dan dominan pada tingkat aktivitas tektonik rendah hingga tidak aktif.
Brief Communication: Rapid Assessment of landslide events based on UAV photogrametry: The 9 January 2021 Cimanggung Landslide, Sumedang, Indonesia Ali Abdurrahman; Muhammad Ariq Budipraja; Nur Khoirullah; Faisal Helmi; Raden Irvan Sophian
Journal of Geological Sciences and Applied Geology Vol 4, No 2 (2021): Journal of Geological Science and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v4i2.32063

Abstract

The landslide incident in Cisarua Village, Cimanggung District on January 9, 2021, is one of the natural disasters which is quite concerning to see the victims. This short mapping is focused on seeing changes in the shape of the affected area and slope faces before the landslide and after the incident. The brief mapping uses the DJI Mavic Pro model UAV that flies at an altitude of 50 meters and 150 meters above the ground with an overlap of 80% and covers an area of 3 ha. Aerial photo processing will produce output in the form of orthophoto images and digital elevation models (DEM) of landslide affected areas. The result of geometric observation showed that the land surface was covered with an area of 3,789 m2. The measured flat length ranges from 120 meters and 32 meters wide. There is also a slope angle after and before the landslide of 2.8 degrees. Analysis of the causes of landslides in terms of geomorphological aspects shows the landslide affected areas that are right in the hilly valleys coupled with buildings that cover the surface water flow from high rainfall. In addition, the analysis of the causes of technical geological analysis shows that landslides can occur due to differences in soil types with different physical properties so that the two soils are not bound by cohesion forces between soils.
Co-Authors Ali Abdurrahman Faisal Helmi Muhammad Ariq Budipraja MUHAMMAD HERYOGA MATUZA Raden Irvan Sophian