Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica
Polygonal patterned ground in polar regions of both Earth and Mars has received considerable attention. In comparison with the size, shape, and arrangement of the polygons, the diverse micro-relief and topography (termed here simply “relief”) of polygonal patterned ground have been understudied. And...
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Online Access: | https://oceanrep.geomar.de/id/eprint/42340/ https://oceanrep.geomar.de/id/eprint/42340/1/Hallet.pdf https://doi.org/10.1016/j.yqres.2010.12.009 |
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ftoceanrep:oai:oceanrep.geomar.de:42340 2023-05-15T13:49:49+02:00 Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica Hallet, Bernard Sletten, Ron Whilden, Kevin 2011 text https://oceanrep.geomar.de/id/eprint/42340/ https://oceanrep.geomar.de/id/eprint/42340/1/Hallet.pdf https://doi.org/10.1016/j.yqres.2010.12.009 en eng Elsevier https://oceanrep.geomar.de/id/eprint/42340/1/Hallet.pdf Hallet, B., Sletten, R. and Whilden, K. (2011) Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica. Quaternary Research, 75 (02). pp. 347-355. DOI 10.1016/j.yqres.2010.12.009 <https://doi.org/10.1016/j.yqres.2010.12.009>. doi:10.1016/j.yqres.2010.12.009 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2011 ftoceanrep https://doi.org/10.1016/j.yqres.2010.12.009 2023-04-07T15:39:01Z Polygonal patterned ground in polar regions of both Earth and Mars has received considerable attention. In comparison with the size, shape, and arrangement of the polygons, the diverse micro-relief and topography (termed here simply “relief”) of polygonal patterned ground have been understudied. And yet, the relief reflects important conditions and processes occurring directly below the ground surface, and it can be observed readily in the field and through remote sensing. Herein, we describe the relief characteristic of the simplest and relatively young form of patterned ground in the Dry Valleys of Antarctic. We also develop a numerical model to examine the generation of relief due to subsurface material being shouldered aside contraction cracks by incremental sand wedges growth, and to down-slope creep of loose granular material on the surface. We model the longterm subsurface deformation of ice-cemented permafrost as a non-linear viscous material. Our modeling is guided and validated using decades of field measurements of surface displacements of the permafrost and relief. This work has implications for assessing the activity of surfaces on Earth and Mars, and much larger scale potential manifestations of incremental wedging in icy material, namely the distinct paired ridges on Europa. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice permafrost wedge* OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Quaternary Research 75 2 347 355 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Polygonal patterned ground in polar regions of both Earth and Mars has received considerable attention. In comparison with the size, shape, and arrangement of the polygons, the diverse micro-relief and topography (termed here simply “relief”) of polygonal patterned ground have been understudied. And yet, the relief reflects important conditions and processes occurring directly below the ground surface, and it can be observed readily in the field and through remote sensing. Herein, we describe the relief characteristic of the simplest and relatively young form of patterned ground in the Dry Valleys of Antarctic. We also develop a numerical model to examine the generation of relief due to subsurface material being shouldered aside contraction cracks by incremental sand wedges growth, and to down-slope creep of loose granular material on the surface. We model the longterm subsurface deformation of ice-cemented permafrost as a non-linear viscous material. Our modeling is guided and validated using decades of field measurements of surface displacements of the permafrost and relief. This work has implications for assessing the activity of surfaces on Earth and Mars, and much larger scale potential manifestations of incremental wedging in icy material, namely the distinct paired ridges on Europa. |
format |
Article in Journal/Newspaper |
author |
Hallet, Bernard Sletten, Ron Whilden, Kevin |
spellingShingle |
Hallet, Bernard Sletten, Ron Whilden, Kevin Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica |
author_facet |
Hallet, Bernard Sletten, Ron Whilden, Kevin |
author_sort |
Hallet, Bernard |
title |
Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica |
title_short |
Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica |
title_full |
Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica |
title_fullStr |
Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica |
title_full_unstemmed |
Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica |
title_sort |
micro-relief development in polygonal patterned ground in the dry valleys of antarctica |
publisher |
Elsevier |
publishDate |
2011 |
url |
https://oceanrep.geomar.de/id/eprint/42340/ https://oceanrep.geomar.de/id/eprint/42340/1/Hallet.pdf https://doi.org/10.1016/j.yqres.2010.12.009 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Ice permafrost wedge* |
genre_facet |
Antarc* Antarctic Antarctica Ice permafrost wedge* |
op_relation |
https://oceanrep.geomar.de/id/eprint/42340/1/Hallet.pdf Hallet, B., Sletten, R. and Whilden, K. (2011) Micro-relief development in polygonal patterned ground in the Dry Valleys of Antarctica. Quaternary Research, 75 (02). pp. 347-355. DOI 10.1016/j.yqres.2010.12.009 <https://doi.org/10.1016/j.yqres.2010.12.009>. doi:10.1016/j.yqres.2010.12.009 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.yqres.2010.12.009 |
container_title |
Quaternary Research |
container_volume |
75 |
container_issue |
2 |
container_start_page |
347 |
op_container_end_page |
355 |
_version_ |
1766252339899924480 |