Talks and Poster Presentations (without Proceedings-Entry):
J.T. Sausgruber, A. Preh:
"Sturzprozess Alpltal - Modellrechnung und Wirklichkeit";
Talk: Geokolloquium Sommersemester 2013,
Universität Innsbruck, Institut für Geologie & Paläontologie (invited);
2013-03-14.
English abstract:
On March 22nd, 2012, the Central Institute for Meteorology and Geodynamics Austria registered 7 minutes before midnight a seismic event with a magnitude of 1.4, which was caused by a rock slide in a mountainous region in Tyrol, Austria, some 33 km west of Innsbruck. Interestingly, this event had an extraordinary runout of 2.6 kilometers, representing a fahrböschung of only 17.8°. This is explained by rock mass sliding on old snow, which extremely promoted the mobility of the process. The rock-snow avalanche was analyzed by means of the continuum numerical models DAN and DAN3D. The purpose of the study was to verify, if the relative simple single-phase Voellmy- or Coulomb-type models used are capable to simulate the behavior of complex rock-snow avalanches, where two phases - rock (solid) and snow (fine particles) - are involved.
Keywords:
rock-snow avalanche, runout analysis, Tyrol, Dynamic ANalysis (DAN)
Created from the Publication Database of the Vienna University of Technology.