The evolution of snow bedforms in the Colorado Front Range and the processes that shape them
When wind blows over dry snow, the snow surface self-organizes into bedforms such as dunes, ripples, snow waves, and sastrugi. These bedforms govern the interaction between wind, heat, and the snowpack, but thus far they have attracted few scientific studies. We present the first time-lapse document...
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Copernicus Publications
2019
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00002651 2023-05-15T18:32:33+02:00 The evolution of snow bedforms in the Colorado Front Range and the processes that shape them Kochanski, Kelly Anderson, Robert S. Tucker, Gregory E. 2019-04 electronic https://doi.org/10.5194/tc-13-1267-2019 https://noa.gwlb.de/receive/cop_mods_00002651 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002609/tc-13-1267-2019.pdf https://tc.copernicus.org/articles/13/1267/2019/tc-13-1267-2019.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-13-1267-2019 https://noa.gwlb.de/receive/cop_mods_00002651 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002609/tc-13-1267-2019.pdf https://tc.copernicus.org/articles/13/1267/2019/tc-13-1267-2019.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2019 ftnonlinearchiv https://doi.org/10.5194/tc-13-1267-2019 2022-02-08T23:00:59Z When wind blows over dry snow, the snow surface self-organizes into bedforms such as dunes, ripples, snow waves, and sastrugi. These bedforms govern the interaction between wind, heat, and the snowpack, but thus far they have attracted few scientific studies. We present the first time-lapse documentation of snow bedform movement and evolution, as part of a series of detailed observations of snow bedform movement in the Colorado Front Range. We show examples of the movement of snow ripples, snow waves, barchan dunes, snow steps, and sastrugi. We also introduce a previously undocumented bedform: the stealth dune. These observations show that (1) snow dunes accelerate minute-by-minute in response to gusts, (2) sastrugi and snow steps present steep edges to the wind and migrate downwind as those edges erode, (3) snow waves and dunes deposit layers of cohesive snow in their wake, and (4) bedforms evolve along complex cyclic trajectories. These observations provide the basis for new conceptual models of bedform evolution, based on the relative fluxes of snowfall, aeolian transport, erosion, and snow sintering across and into the surface. We find that many snow bedforms are generated by complex interactions between these processes. The prototypical example is the snow wave, in which deposition, sintering, and erosion occur in transverse stripes across the snowscape. Article in Journal/Newspaper The Cryosphere Niedersächsisches Online-Archiv NOA Sastrugi ENVELOPE(163.683,163.683,-74.617,-74.617) The Cryosphere 13 4 1267 1281 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Kochanski, Kelly Anderson, Robert S. Tucker, Gregory E. The evolution of snow bedforms in the Colorado Front Range and the processes that shape them |
topic_facet |
article Verlagsveröffentlichung |
description |
When wind blows over dry snow, the snow surface self-organizes into bedforms such as dunes, ripples, snow waves, and sastrugi. These bedforms govern the interaction between wind, heat, and the snowpack, but thus far they have attracted few scientific studies. We present the first time-lapse documentation of snow bedform movement and evolution, as part of a series of detailed observations of snow bedform movement in the Colorado Front Range. We show examples of the movement of snow ripples, snow waves, barchan dunes, snow steps, and sastrugi. We also introduce a previously undocumented bedform: the stealth dune. These observations show that (1) snow dunes accelerate minute-by-minute in response to gusts, (2) sastrugi and snow steps present steep edges to the wind and migrate downwind as those edges erode, (3) snow waves and dunes deposit layers of cohesive snow in their wake, and (4) bedforms evolve along complex cyclic trajectories. These observations provide the basis for new conceptual models of bedform evolution, based on the relative fluxes of snowfall, aeolian transport, erosion, and snow sintering across and into the surface. We find that many snow bedforms are generated by complex interactions between these processes. The prototypical example is the snow wave, in which deposition, sintering, and erosion occur in transverse stripes across the snowscape. |
format |
Article in Journal/Newspaper |
author |
Kochanski, Kelly Anderson, Robert S. Tucker, Gregory E. |
author_facet |
Kochanski, Kelly Anderson, Robert S. Tucker, Gregory E. |
author_sort |
Kochanski, Kelly |
title |
The evolution of snow bedforms in the Colorado Front Range and the processes that shape them |
title_short |
The evolution of snow bedforms in the Colorado Front Range and the processes that shape them |
title_full |
The evolution of snow bedforms in the Colorado Front Range and the processes that shape them |
title_fullStr |
The evolution of snow bedforms in the Colorado Front Range and the processes that shape them |
title_full_unstemmed |
The evolution of snow bedforms in the Colorado Front Range and the processes that shape them |
title_sort |
evolution of snow bedforms in the colorado front range and the processes that shape them |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-13-1267-2019 https://noa.gwlb.de/receive/cop_mods_00002651 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002609/tc-13-1267-2019.pdf https://tc.copernicus.org/articles/13/1267/2019/tc-13-1267-2019.pdf |
long_lat |
ENVELOPE(163.683,163.683,-74.617,-74.617) |
geographic |
Sastrugi |
geographic_facet |
Sastrugi |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-13-1267-2019 https://noa.gwlb.de/receive/cop_mods_00002651 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002609/tc-13-1267-2019.pdf https://tc.copernicus.org/articles/13/1267/2019/tc-13-1267-2019.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-13-1267-2019 |
container_title |
The Cryosphere |
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13 |
container_issue |
4 |
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1267 |
op_container_end_page |
1281 |
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