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Runoff plays an important role in the initiation and propagation of debris flows; therefore, the distance to drainage channels was investigated as being a potential indicator for the distribution of debris flows. The drainage network was delineated using standard stream delineation techniques (Topographic parametrization (TOPAZ) technique),and the distance to stream was computed as a continuous function quantifying the proximity of each pixel across the study area.Distance to drainage line ranges in the study area from 0m (yellow) to 254.9m (blue). |