Distribution and characteristics of Pleistocene ground thermal contraction polygons in Europe from satellite images
International audience The study of Pleistocene polygons in Europe carried out using the collection of satellite images available in Google Earth™ provides new data on the distribution of ground cracking by thermal contraction during glacial periods and sheds light on some factors controlling their...
Published in: | Permafrost and Periglacial Processes |
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ftinstitutnrap:oai:HAL:hal-03691439v1 2024-02-11T10:03:47+01:00 Distribution and characteristics of Pleistocene ground thermal contraction polygons in Europe from satellite images Bertran, Pascal Institut national de recherches archéologiques préventives (Inrap) De la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie (PACEA) Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS) 2022 https://hal.science/hal-03691439 https://hal.science/hal-03691439/document https://hal.science/hal-03691439/file/2022%20PPP%20Polygons%20Europe_manuscript%283%29.pdf https://doi.org/10.1002/ppp.2137 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1002/ppp.2137 hal-03691439 https://hal.science/hal-03691439 https://hal.science/hal-03691439/document https://hal.science/hal-03691439/file/2022%20PPP%20Polygons%20Europe_manuscript%283%29.pdf doi:10.1002/ppp.2137 info:eu-repo/semantics/OpenAccess ISSN: 1045-6740 EISSN: 1099-1530 Permafrost and Periglacial Processes https://hal.science/hal-03691439 Permafrost and Periglacial Processes, 2022, 33 (2), pp.99-113. ⟨10.1002/ppp.2137⟩ Ground thermal contraction polygons Pleistocene permafrost Europe [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2022 ftinstitutnrap https://doi.org/10.1002/ppp.2137 2024-01-24T17:24:36Z International audience The study of Pleistocene polygons in Europe carried out using the collection of satellite images available in Google Earth™ provides new data on the distribution of ground cracking by thermal contraction during glacial periods and sheds light on some factors controlling their formation. The distribution map shows that thermal contraction cracking affected terrain between latitude 43.5°N and the southern limit of the Fennoscandian Ice Sheet at 15 ka, with a concentration of polygons north of latitude 51°N. A clear asymmetry exists in relation to longitude, with a greater southward extension of polygons in France (43.5°N) than in central Europe (47°N). Analysis of the characteristics of polygons at the European scale reveals an association with lithology, latitude, and the age of the sediments in which they formed. The morphological evolution over time reconstructed from observations of polygons of contrasting ages indicates that a stable mature phase, characterized by small (mean size 15 m), regular polygons with numerous Y-junctions, is reached after ca. 4 ka of thermal contraction cracking activity. Article in Journal/Newspaper Fennoscandian Ice Ice Sheet permafrost Permafrost and Periglacial Processes INRAP: HAL (Institut national de recherches archéologiques préventives) Permafrost and Periglacial Processes 33 2 99 113 |
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Open Polar |
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INRAP: HAL (Institut national de recherches archéologiques préventives) |
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ftinstitutnrap |
language |
English |
topic |
Ground thermal contraction polygons Pleistocene permafrost Europe [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Ground thermal contraction polygons Pleistocene permafrost Europe [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDE.MCG]Environmental Sciences/Global Changes Bertran, Pascal Distribution and characteristics of Pleistocene ground thermal contraction polygons in Europe from satellite images |
topic_facet |
Ground thermal contraction polygons Pleistocene permafrost Europe [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience The study of Pleistocene polygons in Europe carried out using the collection of satellite images available in Google Earth™ provides new data on the distribution of ground cracking by thermal contraction during glacial periods and sheds light on some factors controlling their formation. The distribution map shows that thermal contraction cracking affected terrain between latitude 43.5°N and the southern limit of the Fennoscandian Ice Sheet at 15 ka, with a concentration of polygons north of latitude 51°N. A clear asymmetry exists in relation to longitude, with a greater southward extension of polygons in France (43.5°N) than in central Europe (47°N). Analysis of the characteristics of polygons at the European scale reveals an association with lithology, latitude, and the age of the sediments in which they formed. The morphological evolution over time reconstructed from observations of polygons of contrasting ages indicates that a stable mature phase, characterized by small (mean size 15 m), regular polygons with numerous Y-junctions, is reached after ca. 4 ka of thermal contraction cracking activity. |
author2 |
Institut national de recherches archéologiques préventives (Inrap) De la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie (PACEA) Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Bertran, Pascal |
author_facet |
Bertran, Pascal |
author_sort |
Bertran, Pascal |
title |
Distribution and characteristics of Pleistocene ground thermal contraction polygons in Europe from satellite images |
title_short |
Distribution and characteristics of Pleistocene ground thermal contraction polygons in Europe from satellite images |
title_full |
Distribution and characteristics of Pleistocene ground thermal contraction polygons in Europe from satellite images |
title_fullStr |
Distribution and characteristics of Pleistocene ground thermal contraction polygons in Europe from satellite images |
title_full_unstemmed |
Distribution and characteristics of Pleistocene ground thermal contraction polygons in Europe from satellite images |
title_sort |
distribution and characteristics of pleistocene ground thermal contraction polygons in europe from satellite images |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03691439 https://hal.science/hal-03691439/document https://hal.science/hal-03691439/file/2022%20PPP%20Polygons%20Europe_manuscript%283%29.pdf https://doi.org/10.1002/ppp.2137 |
genre |
Fennoscandian Ice Ice Sheet permafrost Permafrost and Periglacial Processes |
genre_facet |
Fennoscandian Ice Ice Sheet permafrost Permafrost and Periglacial Processes |
op_source |
ISSN: 1045-6740 EISSN: 1099-1530 Permafrost and Periglacial Processes https://hal.science/hal-03691439 Permafrost and Periglacial Processes, 2022, 33 (2), pp.99-113. ⟨10.1002/ppp.2137⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/ppp.2137 hal-03691439 https://hal.science/hal-03691439 https://hal.science/hal-03691439/document https://hal.science/hal-03691439/file/2022%20PPP%20Polygons%20Europe_manuscript%283%29.pdf doi:10.1002/ppp.2137 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/ppp.2137 |
container_title |
Permafrost and Periglacial Processes |
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33 |
container_issue |
2 |
container_start_page |
99 |
op_container_end_page |
113 |
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1790600111905046528 |