Patterns of spatio-temporal paraglacial response in the Antarctic Peninsula region and associated ecological implications
The Antarctic Peninsula (AP) constitutes the warmest region of Antarctica, although 98% of the surface is still covered by glaciers. The region shows contrasting geographic and climatic properties, which have conditioned past and present glacial activity. This paper constitutes a review of the spati...
Published in: | Earth-Science Reviews |
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Language: | English |
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2019
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Online Access: | http://hdl.handle.net/11383/2078938 https://doi.org/10.1016/j.earscirev.2019.03.014 http://www.sciencedirect.com/science/journal/00128252 |
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ftuninsubriairis:oai:irinsubria.uninsubria.it:11383/2078938 2024-04-14T08:03:33+00:00 Patterns of spatio-temporal paraglacial response in the Antarctic Peninsula region and associated ecological implications Ruiz-Fernández, Jesús Oliva, Marc Nývlt, Daniel Cannone, Nicoletta García-Hernández, Cristina Guglielmin, Mauro Hrbáček, Filip Roman, Matěj Fernández, Susana López-Martínez, Jerónimo Antoniades, Dermot Ruiz-Fernández, Jesú Oliva, Marc Nývlt, Daniel Cannone, Nicoletta García-Hernández, Cristina Guglielmin, Mauro Hrbáček, Filip Roman, Matěj Fernández, Susana López-Martínez, Jerónimo Antoniades, Dermot 2019 http://hdl.handle.net/11383/2078938 https://doi.org/10.1016/j.earscirev.2019.03.014 http://www.sciencedirect.com/science/journal/00128252 eng eng Elsevier B.V. info:eu-repo/semantics/altIdentifier/wos/WOS:000474499500015 volume:192 issue:- firstpage:379 lastpage:402 numberofpages:24 journal:EARTH-SCIENCE REVIEWS http://hdl.handle.net/11383/2078938 doi:10.1016/j.earscirev.2019.03.014 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85063504417 http://www.sciencedirect.com/science/journal/00128252 Antarctic Peninsula Deglaciation Ecology Geomorphology Paraglacial processe Permafrost info:eu-repo/semantics/article 2019 ftuninsubriairis https://doi.org/10.1016/j.earscirev.2019.03.014 2024-03-21T19:05:14Z The Antarctic Peninsula (AP) constitutes the warmest region of Antarctica, although 98% of the surface is still covered by glaciers. The region shows contrasting geographic and climatic properties, which have conditioned past and present glacial activity. This paper constitutes a review of the spatial and temporal patterns of paraglacial activity across the AP bridging the geomorphological and ecological perspectives. The number and extent of ice-free environments has increased since the Last Glacial Maximum, particularly during the Early Holocene and the 20th century. Following deglaciation, the redefinition of coastlines and the uplift of landmasses proceeded differently in the three sectors of AP, with maximum uplift in the western sector (40 m a.s.l.), the minimum on the north (20.4 m a.s.l.), and intermediate in the eastern sector (30 m). There are also differences in the levels of raised beaches, with the highest complexity in the northern AP (5–7 levels) and the lowest in the eastern AP (3 levels). The transition from glacial to periglacial conditions (paraglacial stage) also differed greatly between the three sectors, with the absence of rock glaciers in the western sector, the development almost exclusively of glacier-derived rock glaciers in the eastern AP, and the majority of talus-derived rock glaciers in the northern AP. The development of protalus lobes, block streams and other periglacial features was highly dependent on the cold/warm based character of individual glaciers; this characteristic determines the existence or absence of permafrost following deglaciation which, in turn, conditions the type and intensity of geomorphic processes in newly exposed ice-free areas. More recently, following the post-1950s regional warming, there have still been important differences between the three sectors in the development of paraglacial environments. Permafrost degradation has occurred in newly exposed areas, accelerating mass wasting and sediment redistribution and changing hydrological processes, ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice permafrost IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) Antarctic The Antarctic Antarctic Peninsula Earth-Science Reviews 192 379 402 |
institution |
Open Polar |
collection |
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) |
op_collection_id |
ftuninsubriairis |
language |
English |
topic |
Antarctic Peninsula Deglaciation Ecology Geomorphology Paraglacial processe Permafrost |
spellingShingle |
Antarctic Peninsula Deglaciation Ecology Geomorphology Paraglacial processe Permafrost Ruiz-Fernández, Jesús Oliva, Marc Nývlt, Daniel Cannone, Nicoletta García-Hernández, Cristina Guglielmin, Mauro Hrbáček, Filip Roman, Matěj Fernández, Susana López-Martínez, Jerónimo Antoniades, Dermot Patterns of spatio-temporal paraglacial response in the Antarctic Peninsula region and associated ecological implications |
topic_facet |
Antarctic Peninsula Deglaciation Ecology Geomorphology Paraglacial processe Permafrost |
description |
The Antarctic Peninsula (AP) constitutes the warmest region of Antarctica, although 98% of the surface is still covered by glaciers. The region shows contrasting geographic and climatic properties, which have conditioned past and present glacial activity. This paper constitutes a review of the spatial and temporal patterns of paraglacial activity across the AP bridging the geomorphological and ecological perspectives. The number and extent of ice-free environments has increased since the Last Glacial Maximum, particularly during the Early Holocene and the 20th century. Following deglaciation, the redefinition of coastlines and the uplift of landmasses proceeded differently in the three sectors of AP, with maximum uplift in the western sector (40 m a.s.l.), the minimum on the north (20.4 m a.s.l.), and intermediate in the eastern sector (30 m). There are also differences in the levels of raised beaches, with the highest complexity in the northern AP (5–7 levels) and the lowest in the eastern AP (3 levels). The transition from glacial to periglacial conditions (paraglacial stage) also differed greatly between the three sectors, with the absence of rock glaciers in the western sector, the development almost exclusively of glacier-derived rock glaciers in the eastern AP, and the majority of talus-derived rock glaciers in the northern AP. The development of protalus lobes, block streams and other periglacial features was highly dependent on the cold/warm based character of individual glaciers; this characteristic determines the existence or absence of permafrost following deglaciation which, in turn, conditions the type and intensity of geomorphic processes in newly exposed ice-free areas. More recently, following the post-1950s regional warming, there have still been important differences between the three sectors in the development of paraglacial environments. Permafrost degradation has occurred in newly exposed areas, accelerating mass wasting and sediment redistribution and changing hydrological processes, ... |
author2 |
Ruiz-Fernández, Jesú Oliva, Marc Nývlt, Daniel Cannone, Nicoletta García-Hernández, Cristina Guglielmin, Mauro Hrbáček, Filip Roman, Matěj Fernández, Susana López-Martínez, Jerónimo Antoniades, Dermot |
format |
Article in Journal/Newspaper |
author |
Ruiz-Fernández, Jesús Oliva, Marc Nývlt, Daniel Cannone, Nicoletta García-Hernández, Cristina Guglielmin, Mauro Hrbáček, Filip Roman, Matěj Fernández, Susana López-Martínez, Jerónimo Antoniades, Dermot |
author_facet |
Ruiz-Fernández, Jesús Oliva, Marc Nývlt, Daniel Cannone, Nicoletta García-Hernández, Cristina Guglielmin, Mauro Hrbáček, Filip Roman, Matěj Fernández, Susana López-Martínez, Jerónimo Antoniades, Dermot |
author_sort |
Ruiz-Fernández, Jesús |
title |
Patterns of spatio-temporal paraglacial response in the Antarctic Peninsula region and associated ecological implications |
title_short |
Patterns of spatio-temporal paraglacial response in the Antarctic Peninsula region and associated ecological implications |
title_full |
Patterns of spatio-temporal paraglacial response in the Antarctic Peninsula region and associated ecological implications |
title_fullStr |
Patterns of spatio-temporal paraglacial response in the Antarctic Peninsula region and associated ecological implications |
title_full_unstemmed |
Patterns of spatio-temporal paraglacial response in the Antarctic Peninsula region and associated ecological implications |
title_sort |
patterns of spatio-temporal paraglacial response in the antarctic peninsula region and associated ecological implications |
publisher |
Elsevier B.V. |
publishDate |
2019 |
url |
http://hdl.handle.net/11383/2078938 https://doi.org/10.1016/j.earscirev.2019.03.014 http://www.sciencedirect.com/science/journal/00128252 |
geographic |
Antarctic The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice permafrost |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice permafrost |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000474499500015 volume:192 issue:- firstpage:379 lastpage:402 numberofpages:24 journal:EARTH-SCIENCE REVIEWS http://hdl.handle.net/11383/2078938 doi:10.1016/j.earscirev.2019.03.014 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85063504417 http://www.sciencedirect.com/science/journal/00128252 |
op_doi |
https://doi.org/10.1016/j.earscirev.2019.03.014 |
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Earth-Science Reviews |
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192 |
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379 |
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