Simulation of debris flows in the Central Andes based on Open Source GIS: possibilities,limitations, and parameter sensitivity |
| |
| Authors: | Martin Mergili Wolfgang Fellin Stella M Moreiras Johann Stötter |
| |
| Institution: | 1.Institute of Applied Geology,BOKU University Vienna,Vienna,Austria;2.Division of Geotechnical and Tunnel Engineering, Department of Infrastructure,University of Innsbruck,Innsbruck,Austria;3.Instituto Argentino de Nivología,Glaciología y Ciencias Ambientales (IANIGLA),Mendoza,Argentina;4.Institute of Geography,University of Innsbruck,Innsbruck,Austria |
| |
| Abstract: | A GIS-based model framework, designed as a raster module for the Open Source software GRASS, was developed for simulating
the mobilization and motion of debris flows triggered by rainfall. Designed for study areas up to few square kilometres, the
tool combines deterministic and empirical model components for infiltration and surface runoff, detachment and sediment transport,
slope stability, debris flow mobilization, and travel distance and deposition. The model framework was applied to selected
study areas along the international road from Mendoza (Argentina) to Central Chile. The input parameters were investigated
at the local scale. The model was run for a number of rainfall scenarios and evaluated using field observations and historical
archives in combination with meteorological data. The sensitivity of the model to a set of key parameters was tested. The
major scope of the paper is to highlight the capabilities of the model—and of this type of models in general—as well as its
limitations and possible solutions. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
