000111471 001__ 111471
000111471 005__ 20180317092908.0
000111471 0247_ $$2doi$$a10.1029/2006JF000489
000111471 02470 $$2ISI$$a000244204200001
000111471 02470 $$2DAR$$a10213
000111471 037__ $$aARTICLE
000111471 245__ $$aThe Kulikovskiy-Sveshnikova-Beghin Model of Powder Snow Avalanches: Development and Application
000111471 269__ $$a2007
000111471 260__ $$c2007
000111471 336__ $$aJournal Articles
000111471 520__ $$aA simple theoretical model, the Kulikovskiy–Sveshnikova–Beghin (KSB) model, is outlined, describing the motion of a particle cloud moving down an incline. This model includes both the entrainment of surrounding ambient fluid and the entrainment of particles from the slope and is equally valid for Boussinesq and non-Boussinesq flows. However, this model can predict physically impossible densities when there is significant particle entrainment. Modifications to the model are proposed which eliminate this problem by including the entrained snow volume. With the modified model, physically realistic mean densities are predicted which have a significant impact on the Richardson number–dependent ambient entrainment. The improvements are illustrated by comparing analytical solutions to the original and the modified KSB equations for the case of a particle cloud traveling on a slope of constant angle, with constant ambient fluid and particle entrainment. Solving the modified model numerically, predictions are compared with data from several large powder snow avalanches at the Swiss Vallée de la Sionne avalanche test site. The modified KSB model appears to capture the dynamics of the avalanche front well; however, problems remain with relating the theoretical geometry to a real avalanche geometry. The success of this model in capturing the front dynamics shows that with careful assumptions that reflect the physics, it is possible to describe aspects of complex flows such as powder snow avalanches with simple models.
000111471 6531_ $$asnow avalanches
000111471 6531_ $$anon-Boussinesq
000111471 6531_ $$atheoretical models
000111471 6531_ $$aNCCR-MICS
000111471 6531_ $$aNCCR-MICS/CL2
000111471 700__ $$aTurnbull, B.
000111471 700__ $$aMcElwaine, J. N.
000111471 700__ $$0240366$$aAncey, Christophe$$g148669
000111471 773__ $$j112$$kF01004$$q13$$tJournal of Geophysical Research
000111471 8564_ $$s439111$$uhttps://infoscience.epfl.ch/record/111471/files/Kulikovskiy-...%2C%20JGR%2C%20112%2C%202007%2C%20ancey.pdf$$zn/a
000111471 909CO $$ooai:infoscience.tind.io:111471$$pENAC$$particle
000111471 909C0 $$0252029$$pLHE$$xU10257
000111471 917Z8 $$x106556
000111471 937__ $$aLHE-ARTICLE-2007-002
000111471 970__ $$a2/LHE
000111471 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000111471 980__ $$aARTICLE