Palsas, lithalsas and remnants of these periglacial mounds. A progress report
There is no general agreement about the meaning of the word ‘palsa’. Usage and recent suggested definitions indicate that the word is chiefly used for cryogenic mounds covered by peat that were formed by an accumulation of segregation ice in the discontinuous permafrost zone. Lithalsas are similar m...
Published in: | Progress in Physical Geography: Earth and Environment |
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Online Access: | http://dx.doi.org/10.1191/0309133302pp354ra http://journals.sagepub.com/doi/pdf/10.1191/0309133302pp354ra |
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crsagepubl:10.1191/0309133302pp354ra 2024-09-09T19:44:31+00:00 Palsas, lithalsas and remnants of these periglacial mounds. A progress report Pissart, A. 2002 http://dx.doi.org/10.1191/0309133302pp354ra http://journals.sagepub.com/doi/pdf/10.1191/0309133302pp354ra en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license Progress in Physical Geography: Earth and Environment volume 26, issue 4, page 605-621 ISSN 0309-1333 1477-0296 journal-article 2002 crsagepubl https://doi.org/10.1191/0309133302pp354ra 2024-07-29T04:25:52Z There is no general agreement about the meaning of the word ‘palsa’. Usage and recent suggested definitions indicate that the word is chiefly used for cryogenic mounds covered by peat that were formed by an accumulation of segregation ice in the discontinuous permafrost zone. Lithalsas are similar mounds, but without any peat cover. The thickness of aggradation ice on the top of lithalsas can be considerable. Use of development and decay palsas as indicators of climatic change is difficult. The climatic conditions in which lithalsas form are much more restricted than those for palsas and, as a consequence, regions where lithalsas exist are rather rare. After melting, lithalsas leave ramparted depressions; the mass movements on the peaty slopes of palsas are less propitious to the formation of ramparts. Some of the pingo remnants described in western Europe are, more accurately, lithalsa traces. Article in Journal/Newspaper Ice palsa palsas permafrost SAGE Publications Progress in Physical Geography: Earth and Environment 26 4 605 621 |
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English |
description |
There is no general agreement about the meaning of the word ‘palsa’. Usage and recent suggested definitions indicate that the word is chiefly used for cryogenic mounds covered by peat that were formed by an accumulation of segregation ice in the discontinuous permafrost zone. Lithalsas are similar mounds, but without any peat cover. The thickness of aggradation ice on the top of lithalsas can be considerable. Use of development and decay palsas as indicators of climatic change is difficult. The climatic conditions in which lithalsas form are much more restricted than those for palsas and, as a consequence, regions where lithalsas exist are rather rare. After melting, lithalsas leave ramparted depressions; the mass movements on the peaty slopes of palsas are less propitious to the formation of ramparts. Some of the pingo remnants described in western Europe are, more accurately, lithalsa traces. |
format |
Article in Journal/Newspaper |
author |
Pissart, A. |
spellingShingle |
Pissart, A. Palsas, lithalsas and remnants of these periglacial mounds. A progress report |
author_facet |
Pissart, A. |
author_sort |
Pissart, A. |
title |
Palsas, lithalsas and remnants of these periglacial mounds. A progress report |
title_short |
Palsas, lithalsas and remnants of these periglacial mounds. A progress report |
title_full |
Palsas, lithalsas and remnants of these periglacial mounds. A progress report |
title_fullStr |
Palsas, lithalsas and remnants of these periglacial mounds. A progress report |
title_full_unstemmed |
Palsas, lithalsas and remnants of these periglacial mounds. A progress report |
title_sort |
palsas, lithalsas and remnants of these periglacial mounds. a progress report |
publisher |
SAGE Publications |
publishDate |
2002 |
url |
http://dx.doi.org/10.1191/0309133302pp354ra http://journals.sagepub.com/doi/pdf/10.1191/0309133302pp354ra |
genre |
Ice palsa palsas permafrost |
genre_facet |
Ice palsa palsas permafrost |
op_source |
Progress in Physical Geography: Earth and Environment volume 26, issue 4, page 605-621 ISSN 0309-1333 1477-0296 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1191/0309133302pp354ra |
container_title |
Progress in Physical Geography: Earth and Environment |
container_volume |
26 |
container_issue |
4 |
container_start_page |
605 |
op_container_end_page |
621 |
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1809914210002403328 |