Observations and numerical simulations of the braking effect of forests on large-scale avalanches
作者： Yukari Takeuchi , Koichi Nishimura , Abani Patra
DOI: 10.1017/AOG.2018.22
关键词:
摘要: Although the disaster reduction effects of forest braking have long been known empirically, they not in detail down to recent. In this study, we ascertained effect by numerical simulations using avalanche dynamics program, TITAN2D, model large-scale avalanches. One these avalanches occurred Makunosawa valley, Myoko, and damaged a cedar forest; others on Mt. Iwate subalpine forest. All many trees terminated within forests. our simulations, resistance forests is simulated larger bed friction angle. Fitting observations from trial error, angle 13–14° non-forested area 25° forested obtained. We conducted same method as for valley avalanche, obtained good agreement between simulations. Simulations reveal that without forest, would traveled at least 200 m farther than forest's actual end possibly up 600 Iwate. This study therefore clearly shows provide
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sci-hub.se 参考文章(31)
B. Salm, Flow, flow transition and runout distances of flowing avalanches Annals of Glaciology. ,vol. 18, pp. 221- 226 ,(1993) , 10.1017/S0260305500011551
H. Gubler, J. Rychetnik, Effects of Forests Near Timberline on Avalanche Formation 1990 International Snow Science Workshop, Bigfork, Montana USA, October 9-13. pp. 73- 92 ,(1990)
Perry Bartelt, Peter Bebi, Marc Christen, Michaela Teich, Thomas Feistl, Yves Bühler, Stopping behavior of snow avalanches in forests Proceedings, 2012 International Snow Science Workshop, Anchorage, Alaska. ,vol. 2012, pp. 420- 426 ,(2012)
G. Anderson, D. McClung, Snow avalanche penetration into mature forest from timber-harvested terrain Canadian Geotechnical Journal. ,vol. 49, pp. 477- 484 ,(2012) , 10.1139/T2012-018
P. Bartelt, V. Stöckli, The influence of tree and branch fracture, overturning and debris entrainment on snow avalanche flow Annals of Glaciology. ,vol. 32, pp. 209- 216 ,(2001) , 10.3189/172756401781819544
M. Christen, J. Kowalski, P. Bartelt, RAMMS: numerical simulation of dense snow avalanches in three-dimensional terrain Cold Regions Science and Technology. ,vol. 63, pp. 1- 14 ,(2010) , 10.1016/J.COLDREGIONS.2010.04.005
Arthur I. Mears, Dynamics of dense-snow avalanches interpreted from broken trees Geology. ,vol. 3, pp. 521- 523 ,(1975) , 10.1130/0091-7613(1975)3<521:DODAIF>2.0.CO;2
Y. Takeuchi, K. Yamanoi, Y. Endo, S. Murakami, K. Izumi, Velocities for the dry and wet snow avalanches at Makunosawa valley in Myoko, Japan Cold Regions Science and Technology. ,vol. 37, pp. 483- 486 ,(2003) , 10.1016/S0165-232X(03)00086-7
Roger P. Denlinger, Richard M. Iverson, Granular avalanches across irregular three-dimensional terrain: 1. Theory and computation Journal of Geophysical Research. ,vol. 109, ,(2004) , 10.1029/2003JF000085
E. Bruce Pitman, C. Camil Nichita, Abani Patra, Andy Bauer, Michael Sheridan, Marcus Bursik, Computing granular avalanches and landslides Physics of Fluids. ,vol. 15, pp. 3638- 3646 ,(2003) , 10.1063/1.1614253