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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Short summary
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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