Little tools, big job: The periglacial conveyor system in cryoplanated uplands
Abstract The mechanisms of sediment removal associated with the nivation process suite are underinvestigated, a situation that hinders development of a unified, coherent theory of cryoplanation terrace formation. This study links sorted stripes—a type of periglacial patterned ground frequently encou...
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Online Access: | http://dx.doi.org/10.1002/ppp.2193 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2193 |
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crwiley:10.1002/ppp.2193 2024-06-02T08:13:09+00:00 Little tools, big job: The periglacial conveyor system in cryoplanated uplands Mitchell, Raven J. Nelson, Frederick E. Nyland, Kelsey E. 2023 http://dx.doi.org/10.1002/ppp.2193 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2193 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Permafrost and Periglacial Processes volume 34, issue 3, page 384-398 ISSN 1045-6740 1099-1530 journal-article 2023 crwiley https://doi.org/10.1002/ppp.2193 2024-05-03T11:03:28Z Abstract The mechanisms of sediment removal associated with the nivation process suite are underinvestigated, a situation that hinders development of a unified, coherent theory of cryoplanation terrace formation. This study links sorted stripes—a type of periglacial patterned ground frequently encountered on cryoplanation terrace treads—to active hydrologic networks capable of transporting large quantities of fine sediments on periglacial hillslopes. Traditional interpretations hold that the presence of sorted patterned ground indicates geomorphic quiescence, a view that has contributed to the dismissal of these features as a factor in the formation of erosional periglacial topography. We address the geomorphic role of sorted stripes as fluvial features by investigating their hydrologic potential for transporting weathered material across and off developing cryoplanation terraces. Flow modeling and watershed geomorphometric analyses were conducted using a high‐resolution digital elevation model of a large cryoplanation terrace in a geomorphically active periglacial upland near Atlin, British Columbia, Canada. Results demonstrate the landscape‐scale spatial organization and geomorphic effectiveness of sorted‐stripe networks—“little tools”—for transporting water and suspended sediment across large cryoplanated surfaces. We present a qualitative model of sediment production and transportation, “the periglacial conveyor system,” that outlines erosional processes responsible for cryoplanation terrace formation and defines the distinctive hydrologic–geomorphic imprint imparted by sorted stripes on periglacial hillslopes. Article in Journal/Newspaper Permafrost and Periglacial Processes Wiley Online Library Atlin ENVELOPE(-133.689,-133.689,59.578,59.578) British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Stripe ENVELOPE(9.914,9.914,63.019,63.019) Permafrost and Periglacial Processes 34 3 384 398 |
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Wiley Online Library |
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language |
English |
description |
Abstract The mechanisms of sediment removal associated with the nivation process suite are underinvestigated, a situation that hinders development of a unified, coherent theory of cryoplanation terrace formation. This study links sorted stripes—a type of periglacial patterned ground frequently encountered on cryoplanation terrace treads—to active hydrologic networks capable of transporting large quantities of fine sediments on periglacial hillslopes. Traditional interpretations hold that the presence of sorted patterned ground indicates geomorphic quiescence, a view that has contributed to the dismissal of these features as a factor in the formation of erosional periglacial topography. We address the geomorphic role of sorted stripes as fluvial features by investigating their hydrologic potential for transporting weathered material across and off developing cryoplanation terraces. Flow modeling and watershed geomorphometric analyses were conducted using a high‐resolution digital elevation model of a large cryoplanation terrace in a geomorphically active periglacial upland near Atlin, British Columbia, Canada. Results demonstrate the landscape‐scale spatial organization and geomorphic effectiveness of sorted‐stripe networks—“little tools”—for transporting water and suspended sediment across large cryoplanated surfaces. We present a qualitative model of sediment production and transportation, “the periglacial conveyor system,” that outlines erosional processes responsible for cryoplanation terrace formation and defines the distinctive hydrologic–geomorphic imprint imparted by sorted stripes on periglacial hillslopes. |
format |
Article in Journal/Newspaper |
author |
Mitchell, Raven J. Nelson, Frederick E. Nyland, Kelsey E. |
spellingShingle |
Mitchell, Raven J. Nelson, Frederick E. Nyland, Kelsey E. Little tools, big job: The periglacial conveyor system in cryoplanated uplands |
author_facet |
Mitchell, Raven J. Nelson, Frederick E. Nyland, Kelsey E. |
author_sort |
Mitchell, Raven J. |
title |
Little tools, big job: The periglacial conveyor system in cryoplanated uplands |
title_short |
Little tools, big job: The periglacial conveyor system in cryoplanated uplands |
title_full |
Little tools, big job: The periglacial conveyor system in cryoplanated uplands |
title_fullStr |
Little tools, big job: The periglacial conveyor system in cryoplanated uplands |
title_full_unstemmed |
Little tools, big job: The periglacial conveyor system in cryoplanated uplands |
title_sort |
little tools, big job: the periglacial conveyor system in cryoplanated uplands |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/ppp.2193 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2193 |
long_lat |
ENVELOPE(-133.689,-133.689,59.578,59.578) ENVELOPE(-125.003,-125.003,54.000,54.000) ENVELOPE(9.914,9.914,63.019,63.019) |
geographic |
Atlin British Columbia Canada Stripe |
geographic_facet |
Atlin British Columbia Canada Stripe |
genre |
Permafrost and Periglacial Processes |
genre_facet |
Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 34, issue 3, page 384-398 ISSN 1045-6740 1099-1530 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1002/ppp.2193 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
34 |
container_issue |
3 |
container_start_page |
384 |
op_container_end_page |
398 |
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1800759830872326144 |