R&D Activities Geologic Hazards Research Korea Institute of Geoscience and Mineral Resources
Development of ICT-Based Landslide Early Warning System and Disaster Prevention Technology

DEVELOPMENT OF ICT-BASED LANDSLIDE EARLY WARNING SYSTEM AND DISASTER PREVENTION TECHNOLOGY

Rapidly moving landslides are extremely hazardous phenomena capable of causing severe damage to ecosystems in the Republic of Korea. Effective and sustainable landslide risk reduction measures have been realized with the development of a reliable early warning system based on rainfall forecast. Three systems were developed to assess future landslide risks: (a) Field Monitoring System (FMS), (b) Rainfall Information Analysis System (RIAS), and (c) Landslide Early Warning System (LEWS). The KIGAM landslide monitoring system is operated at eleven different locations in national park areas in Korea. Each monitoring site has an identical landslide detection system, and these work by acquiring local rainfall information and in-situ geotechnical and hydrological measurement values (e.g., the volumetric water content, suction stress, temperature, pH, and displacement). Laboratory geotechnical tests are also conducted to provide the input parameters (e.g., cohesion and internal friction angle) required in a landslide prediction model. The landslide detection system (S/W) was designed to operate on a cloud server (the Korea Telecom – KT G-Cloud server) to save and manage the monitoring data and to provide landslide prediction maps and landslide inventory sheets. KIGAM has recently developed robust early warning technology to predict rainfall-induced landslides on unsaturated slopes and to characterize hazardous areas prone to slides and debris flows; it has also developed an interworking technology to provide rainfall data based on weather forecasting (at three-hour intervals) using live weather radar information. The rainfall data is updated every three hours, one day in advance. In order to provide alarms for landslides one hour before their occurrence, the accuracy and performance of the developed system were verified for Jirisan National Park. The developed landslide early warning system will be applied in urban areas, such as big cities.  

Contact: Young-Suk Song (yssong@kigam.re.kr)



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