Title Using AVAL-1D to simulate avalanches in the eastern Pyrenees
Author Oller, P.; Janeras, M.; de Buen, H.; Arnó, G.; Christen, M.; García, C.; Martínez, P.
Author Affil Oller, P., Institut Geologic de Catalunya, Barcelona, Spain. Other: Geocat Gestio de Projectes, Spain; Institute for Snow and Avalanche Research, Switzerland
Source Cold Regions Science and Technology, 64(2), p.190-198, ; International snow science workshop 2009, Davos, Switzerland, Sept. 27-Oct. 2, 2009, edited by J. Schweizer. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0165-232X
Publication Date Nov. 2010
Notes In English. Based on Publisher- supplied data GeoRef Acc. No: 309819
Index Terms avalanches; computer programs; computer applications; computerized simulation; friction; mapping; mass movements (geology); simulation; environment simulation; Pyrenees; calibration; data processing; Europe; geologic hazards; mass movements; natural hazards; numerical models; snow avalanches
Abstract The two friction parameters used in the numerical avalanche dynamics program AVAL- 1D, were calibrated empirically with data from observed avalanches in the Swiss Alps. The implementation of the model with these friction parameters in other regions with different characteristics can lead to considerable uncertainty if a previous calibration is not performed. However, direct calibration for a specific avalanche path is often not possible since the data available are insufficient. Therefore, we back- calculated twelve well-documented avalanche events from the Catalan Pyrenees to calibrate the friction coefficients to be used in this mountain range. The result of the study reveals that there is a good fit between recorded and simulated avalanche events using the friction parameters originally calibrated for the Swiss Alps, despite the difference in snow climate between these two mountain ranges.
URL http://hdl.handle.net/10.1016/j.coldregions.2010.08.011
Publication Type conference paper or compendium article
Record ID 65006946