A coupled hydrology/slope kinematics model for developing early warning criteria in the Kalitlaga Landslide, Banjarnegara, Indonesia

• Main Authors: Faris, Fikri, Fathani, Teuku Faisal
• Format: Book Section PeerReviewed
• Language: English
• Published: Springer 2013
• Subjects: Civil Geotechnical Engineering; Civil Engineering
• Online Access: https://repository.ugm.ac.id/274559/1/2_2013_Progress%20of%20geo%20disaster_a%20coupled_FF_TFF.pdf; https://repository.ugm.ac.id/274559/
• Institution: Universitas Gadjah Mada

The tropical climatic condition of Indonesia brings consequences of high activity of landslide in the area. Although, studies of landslide activity and rainfall as triggering factor have been introduced in many research papers, the implementation of the research on the regional area which has particular geological and climate condition is significant. This study has potential meaning to develop early warning systems that may avoid damage and loss of human lives in the area. In this research, field monitoring data have been assessed in Kalitlaga Village, Banjarnegara Regency, Central Java Province to develop coupled hydrology/slope kinematics model of landslide. To simulate the groundwaterlevels in the landslide, a hydrological model with two series of tank represented the geological setting of the area is applied. Groundwater output from the model was used in visco-plastic kinematics model to simulate the velocity of landslide movement. Calibration and verification of the model on the recorded data of groundwater and displacement data showed good results. The peak velocity from the combined model is then classified based on rainfall record of the previous landslide which happened near the area. Velocity that considered being critical condition is used as additional precursor of early warning system of Kalitlaga landslide.