Ketelitian Model Kinematik untuk Memprediksi Karakteristik Longsor (Studi Kasus : Zona Longsor di Ciloto-Puncak, Jawa Barat)

Vera Sadarviana, Hasanuddin Z. Abidin, Joenil Kahar, Djoko Santoso, Wedyanto K

Sari


Abstract. The geodetic approach based on extraterrestrial survey measurements can be used to study phenomenon, especially to monitoring of material movement characteristic. Landslide is one of prominent catastrophe that continuously affecting in Indonesia, especially in rainy season. In mountainous terrain and areas of steep slope of Indonesia, landslides are frequent, especially where land cover has been removed. Landslides destroy not only environment and property, but usually also cause deaths. Landslide mitigation is therefore very crucial and should be done properly. The velocity and acceleration of several monitored point covering the landslide zone area can be estimated using the geodetic approach. Knowing the relation among these three variables in spatial and temporal domain will be useful for identifying the characteristics of landslide. This information can then be used for better strategy of landslide hazard mitigation. Accuracy of the use of kinematic models for prediction of avalanche characteristics need to be validated so that mitigation will be done correctly. Validation is done by doing a comparison between model predictions and the size of the data and statistical tests for the feasibility of prediction of each point of the GPS monitor. Validation is known that the predicted results at some GPS monitor point is not suitable for use. With the vector of the movement of materials, we know the direction and scalar, velocity and acceleration of material displacement. The movement of landslide materials at Ciloto Zone dominated north-west to south-easterly direction and speed to slow very slow (creep).

 

Keywords: accuracy, characteristics, kinematic model, landslide.


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Referensi


Abidin, H.Z., H. Andreas, M. Gamal, M.A. Kusuma, D. Darmawan Surono, M. Hendrasto, O. K. Suganda, Studying Landslide Displacements in Ciloto Area (Indonesia) Using GPS Survey Method, Spatial Science, 2005.

Abidin, H.Z., H.Andreas, M.Gamal, Surono, M.Hendrasto, Studi Gerakan Tanah di Kawasan Rawan Longsor Ciloto (Jawa Barat) dengan Survei GPS, Journal JTM Vol. XI, No. 1. pp. 33-40, 2004.

Abidin, H.Z., H.Andreas, M.Gamal, Surono, M.Hendrasto, Studying Landslide Displacement in Megamendung (Indonesia) Using GPS Survey Method, Proc ITB Eng. Science. Vol 36B, No. 2. pp. 109-123, 2004.

Abramson, Lee W., Thomas S. Lee, Sunil Sharma, Glenn M. Boyce,

Slope Stability and Stabilization Methods, 1st ed., John Wiley & Sons Inc, pp. 629, 1996.

Bowles, J. E. & Johan K. Hainim, Sifat-Sifat Fisis dan Geoteknis Tanah (Mekanika Tanah), 2nd ed., Penerbit Erlangga, pp. 578, 1984.

Dikau, Richard, Denys Brunsden, Lothar Schrott, Maia-Laura Ibsen,

Landslide Recognition-Identification, Movement and Causes, Report No.1 of the European Comission Enviroment Programme, John Wiley and Sons, 1996.

Hartinger, H., F. K. Brunner, Development of a Monitoring System of Landslide Motion Using GPS, 9th FIC Symposium on Deformation Monitoring Glsztyn, pp. 29-38, 2003.

Philip, P., Large Landslides Monitored in Real Time on the World Wide Web, 1999.

Santoso, Djoko, Longsoran pada Jalur Lipatan Kuat Batuan Sedimen Turbidit Jawa Barat sebagai Kasus Khusus Gerakan Tanah dengan Longsoran di Desa Cikareo-Majalengka sebagai Model, Institut Teknologi Bandung, Bandung, 1990.

Schuster, Robert L. & Raymond, J. K., Landslides Analysis and Control, National Academy of Sciences, pp. 234, 1978.

Selby, M. J., Hillslope Materials and Processes, Oxford university press, 2nd ed., pp. 520, 2000.

Selby, M. J., Earth Earth’s Changing Surface - An Introduction to Geomorphology, Oxford University Press, 1st ed., pp. 607, 1985.

Sugalang, Landslide in Ciloto Area West Java Indonesia, theses, Department of Soil Mechanics, Luleå University of Technology, 1989.

Tzenkov, T. & Slaveiko, G., Geometric Analysis of Geodetic Data for Invegtigation of 3D Landslide Deformations, Natural Hazards Review 10.1061/(ASCE) 1527-6988 (2003) 4:2 (78), 2003.

Yalcinkaya, Mualla & Temel, Bayrak, Comparison of Static, Kinematic and Dynamic Geodetic Deformation Models for KutlugÜn Landslide in Northeastern Turkey, Natural Hazard 34. pp 91-95, 2004.

Zâruba, Q., & Vojtêch, Mencl., Landslides and Their Control, Czechoslovak Academy of Sciences, pp. 193, 1969.