A cautionary note for rock avalanche field investigation: recent sequential and overlapping landslides in British Columbia-Reference-Cited by-同舟云学术

A cautionary note for rock avalanche field investigation: recent sequential and overlapping landslides in British Columbia

Published:2021-05 Issue:5 Volume:58 Page:737-740
ISSN:0008-3674
Container-title:Canadian Geotechnical Journal
language:en
Short-container-title:Can. Geotech. J.

Author:

Geertsema Marten¹²,Bevington Alexandre¹²

Affiliation:

1. British Columbia Ministry of Forests, Lands, Natural Resource Operations and Rural Development, Prince George, BC V2L 1R5, Canada.

2. University of Northern British Columbia, Prince George, BC V2N 4Z9, Canada.

Abstract

Large rock avalanches on glaciers are an annual occurrence in the mountains of western North America. Following an event, landslide investigators may strive to quickly arrive on site to assess the deposit. Satellite remote sensing imagery demonstrates that caution is warranted for on-site field assessments. We combine Landsat, Sentinel-1 (radar), Sentinel-2, and Planet imagery to reconstruct the events of four recent overlapping rock avalanche deposits in British Columbia. In our examples, substantial rock avalanches are closely followed (days–months) and buried by much larger landslides. We suggest that landslide investigators exercise caution when assessing fresh rock avalanche deposits in the field.

Publisher

Canadian Science Publishing

Subject

Civil and Structural Engineering,Geotechnical Engineering and Engineering Geology

Link

https://cdnsciencepub.com/doi/pdf/10.1139/cgj-2019-0751

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