Articles | Volume 10, issue 3
The Cryosphere, 10, 977–993, 2016
https://doi.org/10.5194/tc-10-977-2016

Special issue: The evolution of permafrost in mountain regions

The Cryosphere, 10, 977–993, 2016
https://doi.org/10.5194/tc-10-977-2016

Research article 12 May 2016

Research article | 12 May 2016

Frozen debris lobe morphology and movement: an overview of eight dynamic features, southern Brooks Range, Alaska

Margaret M. Darrow et al.

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Short summary
Frozen debris lobes (FDLs) are slow-moving landslides in permafrost. Several FDLs are located adjacent to the Dalton Highway in Alaska's Brooks Range, and may pose a risk to adjacent infrastructure as their rates of movement increase. Through a comprehensive overview of eight FDLs, we found that FDL movement is asynchronous, surface features suggest that increased movement rates correlate to general instability, and the closest FDL will reach the current Dalton Highway alignment by 2023.