Resumo

RAMOS-CANON, Alfonso Mariano; TRUJILLO-VELA, Mario Germán  e  PRADA-SARMIENTO, Luis Felipe. RAINFALL THRESHOLDS FOR THE INITIATION OF LANDSLIDES. A CRITICAL REVIEW. Cienc. Ing. Neogranad. [online]. 2015, vol.25, n.2, pp.61-80. ISSN 0124-8170.  https://doi.org/10.15665/re.v13i1.348.

Multiple rainfall-landslides relationships have been proposed for early warning systems in the world. This work presents a data base that synthesizes the state of the art of rainfall thresholds that generates mass movements in the entire world. The more common rainfall-landslides relationships are processed in order to analyze data in function of the Köppen climatic classification and the area for which it was proposed. The results show a wide range of parameters derived from rainfall that triggers landslides together with considerable differences between threshold values. Data analysis shows the necessity to obtain parameters and thresholds derived from the rainfall that generate landslides for each specific geographical and climatic zone. For that reason, it is possible to generate a rational background that allows us to establish early warning systems of landslides caused by rainfall with low variability. This work provides insights into the catalog of possible parameters derived from rainfall records that allow us to generate thresholds to predict the landslides occurrence. Researchers will have the possibility to search for rainfall-landslide relationships based on statistical analysis, with a wide spectrum of parameters, beyond the traditional variables of antecedent rainfall and the intensity occurred the day of the landslide.

Palavras-chave : Rainfall-Landslide Relationship; Climatic zones -Worldwide; Rainfall Threshold.

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