Massive destabilization of an Arctic ice cap

Willis, Michael J.; Zheng, Whyjay; Durkin, William J.; Pritchard, Matthew E.; Ramage, Joan M.; Dowdeswell, Julian A.; Benham, Toby J.; Bassford, Robin P.; Stearns, Leigh A.; Glazovsky, Andrey F.; Macheret, Yuri Y.; Porter, Claire C.

doi:10.1016/j.epsl.2018.08.049

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Massive destabilization of an Arctic ice cap

2018
By Willis, Michael J. ; Zheng, Whyjay ; Durkin, William J. ; ...
Source: Earth and Planetary Science Letters, 502, 146-155

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Journal Title:

Earth and Planetary Science Letters
Personal Author:

Willis, Michael J. ; Zheng, Whyjay ; Durkin, William J. ; Pritchard, Matthew E. ; Ramage, Joan M. ; ... More +

Willis, Michael J. ; Zheng, Whyjay ; Durkin, William J. ; Pritchard, Matthew E. ; Ramage, Joan M. ; Dowdeswell, Julian A. ; Benham, Toby J. ; Bassford, Robin P. ; Stearns, Leigh A. ; Glazovsky, Andrey F. ; Macheret, Yuri Y. ; Porter, Claire C. Less -
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences)
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Ice caps that are mostly frozen at the bedrock-ice interface are thought to be stable and respond slowly to changes in climate. We use remote sensing to measure velocity and thickness changes that occur when the margin of the largely cold-based Vavilov Ice Cap in the Russian High Arctic advances over weak marine sediments. We show that cold-based to polythermal glacier systems with no previous history of surging may evolve with unexpected and unprecedented speed when their basal boundary conditions change, resulting in very large dynamic ice mass losses (an increase in annual mass loss by a factor of ∼100) over a few years. We question the future long-term stability of cold and polythermal polar ice caps, many of which terminate in marine waters as the climate becomes warmer and wetter in the polar regions.
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Earth and Planetary Science Letters, 502, 146-155
DOI:

https://doi.org/10.1016/j.epsl.2018.08.049
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0012-821X
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pdf
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Elsevier BV
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urn:sha-512:4dfca4c693c4a2e9784f47ed1ff6e38cbedf32cbeb5859e856ff7e321306e2a26a25769bdf8d060375f493ce6aca87657e6c01a6ecc478190475a61203318be7
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Massive destabilization of an Arctic ice cap

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