Glacier response in the European Alps to Heinrich Event 1 cooling: the Gschnitz stadial
Abstract The Gschnitz stadial was a period of regionally extensive glacier advance in the European Alps that lies temporally between the breakdown of the Last Glacial Maximum piedmont lobes and the beginning of the Bølling warm interval. Moraines of the Gschnitz stadial are found in medium to small...
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crwiley:10.1002/jqs.955 2024-09-30T14:39:48+00:00 Glacier response in the European Alps to Heinrich Event 1 cooling: the Gschnitz stadial Ivy‐Ochs, Susan Kerschner, Hanns Kubik, Peter W. Schlüchter, Christian 2006 http://dx.doi.org/10.1002/jqs.955 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.955 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.955 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 21, issue 2, page 115-130 ISSN 0267-8179 1099-1417 journal-article 2006 crwiley https://doi.org/10.1002/jqs.955 2024-09-17T04:49:16Z Abstract The Gschnitz stadial was a period of regionally extensive glacier advance in the European Alps that lies temporally between the breakdown of the Last Glacial Maximum piedmont lobes and the beginning of the Bølling warm interval. Moraines of the Gschnitz stadial are found in medium to small catchments, are steep‐walled and blocky, and reflect a snowline lowering of 650–700 m in comparison to the Little Ice Age reference snowline. 10 Be surface exposure dating of boulders from the moraine at the type locality at Trins (Gschnitz valley, Tyrol, Austria) shows that it stabilised no later than 15 400 ± 1400 yr ago. The overall morphological situation and the long reaction time of the glacier suggest that the climatic downturn lasted about 500 ± 300 yr, indicating that the Gschnitz cold period began approximately 15 900 ± 1400 yr ago, if not somewhat earlier. This is consistent with published radiocarbon dates that imply that the stadial occurred sometime between 15 400 14 C yr BP (18 020–19 100 cal. yr) and 13 250 14 C yr BP (15 360–16 015 cal. yr). A palaeoclimatic interpretation of the Gschnitz glacier based on a simple glacier flow model and statistical glacier‐climate models shows that precipitation was about one‐third of modern‐day precipitation and summer temperatures were about 10 K lower than today. In comparison, during the Younger Dryas, precipitation in this area was only about 10% less and T s (summer temperature) was only 3.5–4 K lower than modern values. Based on the age of the moraine and the cold and dry climate at that time, we suggest that the Gschnitz stadial was the response of Alpine glaciers to cooling of the North Atlantic Ocean associated with Heinrich Event 1. Copyright © 2005 John Wiley & Sons, Ltd. Article in Journal/Newspaper North Atlantic Wiley Online Library Journal of Quaternary Science 21 2 115 130 |
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Wiley Online Library |
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English |
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Abstract The Gschnitz stadial was a period of regionally extensive glacier advance in the European Alps that lies temporally between the breakdown of the Last Glacial Maximum piedmont lobes and the beginning of the Bølling warm interval. Moraines of the Gschnitz stadial are found in medium to small catchments, are steep‐walled and blocky, and reflect a snowline lowering of 650–700 m in comparison to the Little Ice Age reference snowline. 10 Be surface exposure dating of boulders from the moraine at the type locality at Trins (Gschnitz valley, Tyrol, Austria) shows that it stabilised no later than 15 400 ± 1400 yr ago. The overall morphological situation and the long reaction time of the glacier suggest that the climatic downturn lasted about 500 ± 300 yr, indicating that the Gschnitz cold period began approximately 15 900 ± 1400 yr ago, if not somewhat earlier. This is consistent with published radiocarbon dates that imply that the stadial occurred sometime between 15 400 14 C yr BP (18 020–19 100 cal. yr) and 13 250 14 C yr BP (15 360–16 015 cal. yr). A palaeoclimatic interpretation of the Gschnitz glacier based on a simple glacier flow model and statistical glacier‐climate models shows that precipitation was about one‐third of modern‐day precipitation and summer temperatures were about 10 K lower than today. In comparison, during the Younger Dryas, precipitation in this area was only about 10% less and T s (summer temperature) was only 3.5–4 K lower than modern values. Based on the age of the moraine and the cold and dry climate at that time, we suggest that the Gschnitz stadial was the response of Alpine glaciers to cooling of the North Atlantic Ocean associated with Heinrich Event 1. Copyright © 2005 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Ivy‐Ochs, Susan Kerschner, Hanns Kubik, Peter W. Schlüchter, Christian |
spellingShingle |
Ivy‐Ochs, Susan Kerschner, Hanns Kubik, Peter W. Schlüchter, Christian Glacier response in the European Alps to Heinrich Event 1 cooling: the Gschnitz stadial |
author_facet |
Ivy‐Ochs, Susan Kerschner, Hanns Kubik, Peter W. Schlüchter, Christian |
author_sort |
Ivy‐Ochs, Susan |
title |
Glacier response in the European Alps to Heinrich Event 1 cooling: the Gschnitz stadial |
title_short |
Glacier response in the European Alps to Heinrich Event 1 cooling: the Gschnitz stadial |
title_full |
Glacier response in the European Alps to Heinrich Event 1 cooling: the Gschnitz stadial |
title_fullStr |
Glacier response in the European Alps to Heinrich Event 1 cooling: the Gschnitz stadial |
title_full_unstemmed |
Glacier response in the European Alps to Heinrich Event 1 cooling: the Gschnitz stadial |
title_sort |
glacier response in the european alps to heinrich event 1 cooling: the gschnitz stadial |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1002/jqs.955 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.955 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.955 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Journal of Quaternary Science volume 21, issue 2, page 115-130 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.955 |
container_title |
Journal of Quaternary Science |
container_volume |
21 |
container_issue |
2 |
container_start_page |
115 |
op_container_end_page |
130 |
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1811642395628929024 |