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This article attempts to give a very detailed perspective to the challenge and advances associated to rainfall-triggered landslides, which are characteristic and very common in tropical environments, such as Colombia. Landslides are one of the most common hazards around the world. Economic losses caused by landslides are huge, and are often exaggerated due to urban sprawl. Recent findings in this topic around the world have been applied for determining critical thresholds by physical or statistical models, combined with rainfall forecasting and near real time monitoring as fundamental component of an early warning system. Landslides are caused by several phenomena, including geological, geomorphologic and anthropogenic dynamics; however, one variable - precipitation - has a uniquely strong capability to cause rapid, intense slope failure. A review of several studies of rainfall-triggered landslides is presented some of who have used statistical tools that define critical thresholds based on intensity and duration rainfall. Other authors have focused upon physical based models combining hydrological and geotechnical aspects of rainfall, water pore pressure and slope stability.
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References
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