Understanding snow bedform formation by adding sintering to a cellular automata model
Cellular-automata-based modelling for simulating snow bedforms and snow deposition is introduced in this study. The well-known ReSCAL model, previously used for sand bedforms, is adapted for this purpose by implementing a simple sintering mechanism. The effect of sintering is first explored for soli...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2019
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-13-3239-2019 https://noa.gwlb.de/receive/cop_mods_00049722 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049341/tc-13-3239-2019.pdf https://tc.copernicus.org/articles/13/3239/2019/tc-13-3239-2019.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00049722 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00049722 2023-05-15T18:32:33+02:00 Understanding snow bedform formation by adding sintering to a cellular automata model Sharma, Varun Braud, Louise Lehning, Michael 2019-12 electronic https://doi.org/10.5194/tc-13-3239-2019 https://noa.gwlb.de/receive/cop_mods_00049722 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049341/tc-13-3239-2019.pdf https://tc.copernicus.org/articles/13/3239/2019/tc-13-3239-2019.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-13-3239-2019 https://noa.gwlb.de/receive/cop_mods_00049722 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049341/tc-13-3239-2019.pdf https://tc.copernicus.org/articles/13/3239/2019/tc-13-3239-2019.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-13-3239-2019 2022-02-08T22:37:10Z Cellular-automata-based modelling for simulating snow bedforms and snow deposition is introduced in this study. The well-known ReSCAL model, previously used for sand bedforms, is adapted for this purpose by implementing a simple sintering mechanism. The effect of sintering is first explored for solitary barchan dunes of different sizes and flow conditions. Three types of behaviour are observed: small barchans continue their motion without any perceptible difference while large barchans sinter immediately. Barchans of intermediate size split, leaving behind a sintered core and a smaller barchan is formed. It is found that sintering introduces an upper limit to the size of bedforms that can remain mobile. The concept of “maximum streamwise length” (MSL) is introduced and MSL is identified for different wind speeds using the solitary dune scenario. Simulations of the full evolution from an initially flat snow layer to a complex dune field are performed next. It is found that the largest bedforms lie below the MSL threshold. Additionally, it is found that shallow snow layers are most susceptible to mechanical destabilization by the wind. Article in Journal/Newspaper The Cryosphere Barchans Niedersächsisches Online-Archiv NOA Barchans ENVELOPE(-64.333,-64.333,-65.233,-65.233) The Cryosphere 13 12 3239 3260 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Sharma, Varun Braud, Louise Lehning, Michael Understanding snow bedform formation by adding sintering to a cellular automata model |
topic_facet |
article Verlagsveröffentlichung |
description |
Cellular-automata-based modelling for simulating snow bedforms and snow deposition is introduced in this study. The well-known ReSCAL model, previously used for sand bedforms, is adapted for this purpose by implementing a simple sintering mechanism. The effect of sintering is first explored for solitary barchan dunes of different sizes and flow conditions. Three types of behaviour are observed: small barchans continue their motion without any perceptible difference while large barchans sinter immediately. Barchans of intermediate size split, leaving behind a sintered core and a smaller barchan is formed. It is found that sintering introduces an upper limit to the size of bedforms that can remain mobile. The concept of “maximum streamwise length” (MSL) is introduced and MSL is identified for different wind speeds using the solitary dune scenario. Simulations of the full evolution from an initially flat snow layer to a complex dune field are performed next. It is found that the largest bedforms lie below the MSL threshold. Additionally, it is found that shallow snow layers are most susceptible to mechanical destabilization by the wind. |
format |
Article in Journal/Newspaper |
author |
Sharma, Varun Braud, Louise Lehning, Michael |
author_facet |
Sharma, Varun Braud, Louise Lehning, Michael |
author_sort |
Sharma, Varun |
title |
Understanding snow bedform formation by adding sintering to a cellular automata model |
title_short |
Understanding snow bedform formation by adding sintering to a cellular automata model |
title_full |
Understanding snow bedform formation by adding sintering to a cellular automata model |
title_fullStr |
Understanding snow bedform formation by adding sintering to a cellular automata model |
title_full_unstemmed |
Understanding snow bedform formation by adding sintering to a cellular automata model |
title_sort |
understanding snow bedform formation by adding sintering to a cellular automata model |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-13-3239-2019 https://noa.gwlb.de/receive/cop_mods_00049722 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049341/tc-13-3239-2019.pdf https://tc.copernicus.org/articles/13/3239/2019/tc-13-3239-2019.pdf |
long_lat |
ENVELOPE(-64.333,-64.333,-65.233,-65.233) |
geographic |
Barchans |
geographic_facet |
Barchans |
genre |
The Cryosphere Barchans |
genre_facet |
The Cryosphere Barchans |
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-13-3239-2019 https://noa.gwlb.de/receive/cop_mods_00049722 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049341/tc-13-3239-2019.pdf https://tc.copernicus.org/articles/13/3239/2019/tc-13-3239-2019.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-13-3239-2019 |
container_title |
The Cryosphere |
container_volume |
13 |
container_issue |
12 |
container_start_page |
3239 |
op_container_end_page |
3260 |
_version_ |
1766216749208829952 |