Regional Prediction of Impending Debris Flow Based on Doppler Weather Radar

摘要

Debris flow prediction is one of the important means to re-duce the loss caused by debris flow. This paper built a regional predic-tion model of impending debris flow based on regional environmental background(including topography,geology,land use,and etc.) ,rainfall and debris flow data. A system of regional prediction of impending de-bris flow was set up on ArcGIS 9.0 platform according to the model. The system used forecast precipitation data of Doppler weather radar and observational precipitation data as its input data. It could provide a prediction about the possibility of debris flow one to three hours before it happened,and was put into use in Liangshan Meteorological Obser-vatory in Sichuan province in the monsoon of 2006.