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Journal : Jurnal Geologi dan Sumberdaya Mineral

KARAKTERISTIK, TIPE DAN BIDANG GELINCIR PADA ZONA LONGSOR CILOTO, JAWA BARAT BERDASARKAN ESTIMASI METODE GEODETIK Sadarviana, Vera; Abidin, Hasanuddin Z.; Kahar, Joenil; Santoso, Djoko
Jurnal Geologi dan Sumberdaya Mineral Vol 20, No 2 (2010): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

Slip surface is delaminates between sliding material and undisturbed slope material. In limit equilibrium method, slip surface is used as reference for safety factor calculation. Landslides phenomenon can be observed using of GPS satellite technology to mitigation and material displacement monitoring. For that purpose, this research is carried out to estimate characteristic, type and slip surface position at Ciloto landslide zone by GPS survey.First, estimation of slip surface is carried out by slope surface profile which referred to same direction of horizontal displacement of monitored points. The same direction of horizontal displacement at several monitored points indicate that the monitored points can be located at the same slip surface. Second, maximum-minimum function of geometric method and polynomial approach, including graphical method by velocity trend line plotting for each monitored point, were done to find out point position at slip surface. Ideal planar slip surface is determined by infinite slope analysis and circular slip surface is determined by circle arc analysis. Estimation of slip surface by geodetic method approach couldn't give result because geodetic data describe slope surface. By intersection of velocity trend line of monitored point, it can gave estimation of slip surface location. Geodetic approach could gave estimation of scarp position as well as crack which is indicate beginning of slip surface. Locations of scarp in vertical profile have suitability with result of geology research at same study area.Ciloto landslide zone is classified in very slow velocity landslide (5 x 10-5 - 5 x 10-7 mm/second). The characteristic of horizontal displacement has various direction for each monitored point. Vertical displacements of monitored point have subsidence and uplift or bulging. That characteristic formed hummocky terrain and the other side of zone have gradual slope. From the research, the landslide type at Ciloto zone is multiple compound (rotational and translational) debris slides.Keywords : geodetic method, GPS survey, landslide characteristic, landslide type, slip surface, multiple landslide, scarp
Co-Authors . Mansyurdin . Siswanto . Suharyanto . SYAFARUDDIN, . Aditia Wardana, Aditia Aditiawardana Aditiawardana, Aditiawardana Agung Dwi Indrawan Ahmad Fauzi AHMAD RIDUAN Aida Farida Alda, Rieza Rizqi Alsagaff, Mohammad Yusuf AMANAH, Dian Mutiara Amin, Mochammad Andre Noevi Rahmanto Anton Subarno ANTONIUS SUWANTO Aprih Santoso, Aprih Ardityo R Ardhany, Ardityo R Artaria Tjempakasari, Artaria Asmini Budiani Aswaldi Anwar ASWIDINNOO, Hajrial Baiti, Ahmad Awaluddin Bambang S Purwoko Bastin Fitriatus Hasanah Bekti Wulandari Bonita Destiana Budi Sulistijo Chandra Irwanadi Mohani, Chandra Irwanadi Chandra Irwanadi, Chandra Chibtiyah, Nur chieko Hamada, chieko D Ningsih, D Darda Efendi Darharta Dahrin DEDI SOLEH EFFENDI, DEDI SOLEH Empitu, Maulana Antiyan Endrizal ERIS, Deden Dewantara Fajar, Saiful Ferdiyono, J. Reza FITRANTI, Niyyah FITRANTY, Niyyah GHONI, M. A. GHONI HABIBULLAH, Hanning Susilo Haerani Rasyid, Haerani HAJRIAL ASWIDINNOOR Hakim, Zaky El Hamidah, Berliana HANDAYAN, Agustina A. HAPPY WIDIASTUTI Hasanatuludhhiyah, Nurina Hasanuddin Z. Abidin Hasanuddin Z. Abidin, Hasanuddin Hayati Minarsih Hendra Grandis I GEDE PUTU WIGENA I Haryoko, I Ichiyu Shou, Ichiyu Imron Riyadi Indarto Indarto Indhira Hari Kurnia Ismail, Mohd Erfy Isnu Irwantoro, Isnu JAYA, Abdul Mollah S. Joenil Kahar, Joenil Jumiyanto Widodo Kadariswantiningsih, Ika Nindya KRESNAWATY, Irma Kunimi Maeda, Kunimi Laesanpura, Agus Laesanpura, Agus M Thaha, M MARAHIMIN, B. MARAHIMIN Mayta Novaliza Isda Mitsumine Fukui, Mitsumine MOCHAMMAD THAHA Moh. Yogiantoro, Moh. MS, Freddy Muhammad Jusuf Muhammad Munir Munadi Munadi Munir, Muh Musliar Kasim Muslikhin Muslikhin Niken Ayu Larasati, Niken Ayu NIKOLAU, Basil J Nugroho, Cahyo Wibisono Nunuk Mardiana, Nunuk NURILMALA, F Nuryake Fajaryati PANJAITAN, K. PANJAITAN Pipit Utami Pradusuara, Franes pranawa pranawa, pranawa PRIYONO, . PURBA, A.R. PURBA Putra, Abdul Aziz Sidiq Tri PUTRANTO, Riza A PUTRANTO, Riza A. Putri, Eka Arum Cahyaning R.D.B LEFROY Raduan, Atiqah Ramlan Arief Fathony, Ramlan Arief Rita Hayati ROEDHY POERWANTO Rokib, Muhammad Nur SAMANHUDI, . Saptowo Jumali Pardal, Saptowo Jumali SARAGIH, A. H. SARAGIH SARI, Dini Astika Satoshi Horikoshi, Satoshi SINAGA, Jisman Slamet Slamet Soekarno Mismana Putra, Soekarno Mismana soewanto soewanto, soewanto Sri Hendrastuti Sri Wahyuni Sri Waluyanti Subagus Wahyuono Sudarsono SUDARSONO SUDARSONO Sugeng Riyanto Sugiyanto Sugiyanto Sukarti Moeljopawiro Suparman Suparman Suryansyah, Maulana Muhtadin SUSANTI, Paramitha Suzuki, Yusuke SYARIEF, Auzar Tetty Chaidamsari, Tetty Tri P Asmarawati, Tri P TRI-PANJI, . TRIASTANTO, Oktaviany Ferry UMAHATI, Binti Khurotul Umi Rochayati Umi Rokhayati, Umi Vera Sadarviana, Vera Wahyudi W. Parnadi Warsa Warsa Wawan Gunawan A. Kadir Wedyanto K, Wedyanto Widodo Widodo Widyastuti, SM WIRAMIHARDJA, Memed Y, Yatini Yasuhiko Tomino, Yasuhiko yatini, yatini Yusniwati Yusniwati