Some observations on the formation of an active pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica
Abstract Summer observations of the morphology and the debris accumulation processes at an actively forming pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica demonstrate that rockfall debris accumulation is causing downslope (outward) rampart extension even though the dist...
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crwiley:10.1002/ppp.698 2024-09-15T17:43:39+00:00 Some observations on the formation of an active pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica Hedding, D. W. Meiklejohn, K. I. Le Roux, J. J. Loubser, M. Davis, J. K. 2010 http://dx.doi.org/10.1002/ppp.698 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.698 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.698 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 21, issue 4, page 355-361 ISSN 1045-6740 1099-1530 journal-article 2010 crwiley https://doi.org/10.1002/ppp.698 2024-07-25T04:23:19Z Abstract Summer observations of the morphology and the debris accumulation processes at an actively forming pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica demonstrate that rockfall debris accumulation is causing downslope (outward) rampart extension even though the distal slope is not at the angle of repose. Field experiments show that the vast majority of rocks can traverse a stable firn surface to reach the proximal slope of the rampart and more than half end up on the distal slope or beyond. The formation processes indicate that the morphological characteristics and environmental conditions under which such features develop may be more varied than conceived in current models. Consequently, caution must be employed when fossil ramparts are used to infer palaeo‐environmental conditions. Copyright © 2010 John Wiley & Sons, Ltd. Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 21 4 355 361 |
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Wiley Online Library |
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English |
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Abstract Summer observations of the morphology and the debris accumulation processes at an actively forming pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica demonstrate that rockfall debris accumulation is causing downslope (outward) rampart extension even though the distal slope is not at the angle of repose. Field experiments show that the vast majority of rocks can traverse a stable firn surface to reach the proximal slope of the rampart and more than half end up on the distal slope or beyond. The formation processes indicate that the morphological characteristics and environmental conditions under which such features develop may be more varied than conceived in current models. Consequently, caution must be employed when fossil ramparts are used to infer palaeo‐environmental conditions. Copyright © 2010 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Hedding, D. W. Meiklejohn, K. I. Le Roux, J. J. Loubser, M. Davis, J. K. |
spellingShingle |
Hedding, D. W. Meiklejohn, K. I. Le Roux, J. J. Loubser, M. Davis, J. K. Some observations on the formation of an active pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica |
author_facet |
Hedding, D. W. Meiklejohn, K. I. Le Roux, J. J. Loubser, M. Davis, J. K. |
author_sort |
Hedding, D. W. |
title |
Some observations on the formation of an active pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica |
title_short |
Some observations on the formation of an active pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica |
title_full |
Some observations on the formation of an active pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica |
title_fullStr |
Some observations on the formation of an active pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica |
title_full_unstemmed |
Some observations on the formation of an active pronival rampart at Grunehogna Peaks, Western Dronning Maud Land, Antarctica |
title_sort |
some observations on the formation of an active pronival rampart at grunehogna peaks, western dronning maud land, antarctica |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.1002/ppp.698 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.698 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.698 |
genre |
Antarc* Antarctica Dronning Maud Land Permafrost and Periglacial Processes |
genre_facet |
Antarc* Antarctica Dronning Maud Land Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 21, issue 4, page 355-361 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.698 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
21 |
container_issue |
4 |
container_start_page |
355 |
op_container_end_page |
361 |
_version_ |
1810490734364590080 |