Articles | Volume 21, issue 2
https://doi.org/10.5194/nhess-21-533-2021
https://doi.org/10.5194/nhess-21-533-2021
Research article
 | 
05 Feb 2021
Research article |  | 05 Feb 2021

A regional spatiotemporal analysis of large magnitude snow avalanches using tree rings

Erich Peitzsch, Jordy Hendrikx, Daniel Stahle, Gregory Pederson, Karl Birkeland, and Daniel Fagre

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Cited articles

Armstrong, B. R.: A quantitative analysis of avalanche hazard on U.S. Highway 550, southwestern Colorado, in: Proceedings of the Western Snow Conference, 14–16 April 2017, St. George, Utah, 95–104, 1981. 
Ballesteros-Canovas, J. A., Trappmann, D., Madrigal-Gonzalez, J., Eckert, N., and Stoffel, M.: Climate warming enhances snow avalanche risk in the Western Himalayas, Proc. Natl. Acad. Sci. USA, 115, 3410–3415, https://doi.org/10.1073/pnas.1716913115, 2018. 
Bebi, P., Kulakowski, D., and Rixen, C.: Snow avalanche disturbances in forest ecosystems-State of research and implications for management, Forest Ecol. Manage., 257, 1883–1892, https://doi.org/10.1016/j.foreco.2009.01.050, 2009. 
Birkeland, K. W.: Spatial patterns of snow stability throughout a small mountain range, J. Glaciol., 47, 176–186, https://doi.org/10.3189/172756501781832250, 2001. 
Blöschl, G.: Scaling issues in snow hydrology, Hydrol. Process., 13, 2149–2175, https://doi.org/10.1002/(SICI)1099-1085(199910)13:14/15<2149::AID-HYP847>3.0.CO;2-8, 1999. 
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We sampled 647 trees from 12 avalanche paths to investigate large snow avalanches over the past 400 years in the northern Rocky Mountains, USA. Sizable avalanches occur approximately every 3 years across the region. Our results emphasize the importance of sample size, scale, and spatial extent when reconstructing avalanche occurrence across a region. This work can be used for infrastructure planning and avalanche forecasting operations.
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