Massive Ice Control on Permafrost Coast Erosion and Sensitivity
High overall rates of permafrost cliff retreat, coupled with spatial variability, have been accompanied by increased uncertainty over future landscape dynamics. We map long‐term (>80 years) retreat of the shoreline and photogrammetrically analyze historic aerial imagery to quantify the processes...
Published in: | Geophysical Research Letters |
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Language: | English |
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American Geophysical Union
2020
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/44213/ https://doi.org/10.1029/2020gl087917 https://nrl.northumbria.ac.uk/id/eprint/44213/1/2020GL087917.pdf |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:44213 2023-05-15T16:36:39+02:00 Massive Ice Control on Permafrost Coast Erosion and Sensitivity Lim, Michael Whalen, Dustin Martin, James Mann, Paul Hayes, Sam Fraser, Paul Berry, H. B. Ouellette, D. 2020-09-16 text https://nrl.northumbria.ac.uk/id/eprint/44213/ https://doi.org/10.1029/2020gl087917 https://nrl.northumbria.ac.uk/id/eprint/44213/1/2020GL087917.pdf en eng American Geophysical Union https://nrl.northumbria.ac.uk/id/eprint/44213/1/2020GL087917.pdf Lim, Michael, Whalen, Dustin, Martin, James, Mann, Paul, Hayes, Sam, Fraser, Paul, Berry, H. B. and Ouellette, D. (2020) Massive Ice Control on Permafrost Coast Erosion and Sensitivity. Geophysical Research Letters, 47 (17). e2020GL087917. ISSN 0094-8276 cc_by_4_0 CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2020 ftunivnorthumb https://doi.org/10.1029/2020gl087917 2022-09-25T06:12:38Z High overall rates of permafrost cliff retreat, coupled with spatial variability, have been accompanied by increased uncertainty over future landscape dynamics. We map long‐term (>80 years) retreat of the shoreline and photogrammetrically analyze historic aerial imagery to quantify the processes at a permafrost coast site with massive ground ice. Retreat rates have been relatively constant, but topographic changes show that subsidence is a potentially critical but often ignored component of coastal sensitivity, exceeding landward recession by over three times during the last 24 years. We calibrate novel passive seismic surveys along clear and variable exposures of massive ground ice and then spatially map key subsurface layers. Combining decadal patterns of volumetric change with new ground ice variation maps enables past trends to be interpreted, future volumetric geomorphic behavior to be better constrained, and improves the assessment of permafrost coast sensitivity and the release of carbon‐bearing material. Article in Journal/Newspaper Ice permafrost Northumbria University, Newcastle: Northumbria Research Link (NRL) New Ground ENVELOPE(-55.215,-55.215,49.567,49.567) Geophysical Research Letters 47 17 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Lim, Michael Whalen, Dustin Martin, James Mann, Paul Hayes, Sam Fraser, Paul Berry, H. B. Ouellette, D. Massive Ice Control on Permafrost Coast Erosion and Sensitivity |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
High overall rates of permafrost cliff retreat, coupled with spatial variability, have been accompanied by increased uncertainty over future landscape dynamics. We map long‐term (>80 years) retreat of the shoreline and photogrammetrically analyze historic aerial imagery to quantify the processes at a permafrost coast site with massive ground ice. Retreat rates have been relatively constant, but topographic changes show that subsidence is a potentially critical but often ignored component of coastal sensitivity, exceeding landward recession by over three times during the last 24 years. We calibrate novel passive seismic surveys along clear and variable exposures of massive ground ice and then spatially map key subsurface layers. Combining decadal patterns of volumetric change with new ground ice variation maps enables past trends to be interpreted, future volumetric geomorphic behavior to be better constrained, and improves the assessment of permafrost coast sensitivity and the release of carbon‐bearing material. |
format |
Article in Journal/Newspaper |
author |
Lim, Michael Whalen, Dustin Martin, James Mann, Paul Hayes, Sam Fraser, Paul Berry, H. B. Ouellette, D. |
author_facet |
Lim, Michael Whalen, Dustin Martin, James Mann, Paul Hayes, Sam Fraser, Paul Berry, H. B. Ouellette, D. |
author_sort |
Lim, Michael |
title |
Massive Ice Control on Permafrost Coast Erosion and Sensitivity |
title_short |
Massive Ice Control on Permafrost Coast Erosion and Sensitivity |
title_full |
Massive Ice Control on Permafrost Coast Erosion and Sensitivity |
title_fullStr |
Massive Ice Control on Permafrost Coast Erosion and Sensitivity |
title_full_unstemmed |
Massive Ice Control on Permafrost Coast Erosion and Sensitivity |
title_sort |
massive ice control on permafrost coast erosion and sensitivity |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
https://nrl.northumbria.ac.uk/id/eprint/44213/ https://doi.org/10.1029/2020gl087917 https://nrl.northumbria.ac.uk/id/eprint/44213/1/2020GL087917.pdf |
long_lat |
ENVELOPE(-55.215,-55.215,49.567,49.567) |
geographic |
New Ground |
geographic_facet |
New Ground |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/44213/1/2020GL087917.pdf Lim, Michael, Whalen, Dustin, Martin, James, Mann, Paul, Hayes, Sam, Fraser, Paul, Berry, H. B. and Ouellette, D. (2020) Massive Ice Control on Permafrost Coast Erosion and Sensitivity. Geophysical Research Letters, 47 (17). e2020GL087917. ISSN 0094-8276 |
op_rights |
cc_by_4_0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2020gl087917 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
17 |
_version_ |
1766026991711027200 |