Ice-flood history reconstructed with tree- rings from the southern boreal forest limit, western Québec
Historic ice-flood frequency and lake levels were reconstructed for the southern limit of the boreal forest in western Québec by dendrochronological analyses of ice-scarred white cedar (Thuja occidentalis L.) trees growing on the shore of Lake Duparquet. Results reveal a significant increase in majo...
Published in: | The Holocene |
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Language: | English |
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1997
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Online Access: | http://dx.doi.org/10.1177/095968369700700305 http://journals.sagepub.com/doi/pdf/10.1177/095968369700700305 |
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crsagepubl:10.1177/095968369700700305 2024-03-03T08:42:11+00:00 Ice-flood history reconstructed with tree- rings from the southern boreal forest limit, western Québec Tardif, Jacques Bergeron, Yves 1997 http://dx.doi.org/10.1177/095968369700700305 http://journals.sagepub.com/doi/pdf/10.1177/095968369700700305 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 7, issue 3, page 291-300 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 1997 crsagepubl https://doi.org/10.1177/095968369700700305 2024-02-05T10:38:18Z Historic ice-flood frequency and lake levels were reconstructed for the southern limit of the boreal forest in western Québec by dendrochronological analyses of ice-scarred white cedar (Thuja occidentalis L.) trees growing on the shore of Lake Duparquet. Results reveal a significant increase in major ice floods since the end of the 'Little Ice Age' and, in particular, since the beginning of this century. This rise was also not related to oversampling of younger scarred trees. In addition, time between white-cedar establishment and the first recorded scar has significantly decreased in the last 200 years, and this applies for trees occupying similar topographic conditions. White cedar's increased exposure, in the 150 years, to scarring strongly suggests that Lake Duparquet water levels at breakup are reaching higher elevations. This is supported by an approximate 100-cm rise in maximum ice-scar height since the end of the 'Little Ice Age'. Years leading to abundant ice scars are those with heavy winter and spring precipitation. Cold Novembers and rainy Aprils also favour major ice-flood episodes. Earlier spring melts could also favour pre-mature ice breakup; a situation that may cause higher-amplitude ice floods. Since the 'Little Ice Age', greater penetration of warm and humid air from the south resulting from a northward migration of the Arctic front may be responsible for the increasing major ice floods registered at Québec's southern boreal forest limit. Article in Journal/Newspaper Arctic SAGE Publications Arctic The Holocene 7 3 291 300 |
institution |
Open Polar |
collection |
SAGE Publications |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Tardif, Jacques Bergeron, Yves Ice-flood history reconstructed with tree- rings from the southern boreal forest limit, western Québec |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
Historic ice-flood frequency and lake levels were reconstructed for the southern limit of the boreal forest in western Québec by dendrochronological analyses of ice-scarred white cedar (Thuja occidentalis L.) trees growing on the shore of Lake Duparquet. Results reveal a significant increase in major ice floods since the end of the 'Little Ice Age' and, in particular, since the beginning of this century. This rise was also not related to oversampling of younger scarred trees. In addition, time between white-cedar establishment and the first recorded scar has significantly decreased in the last 200 years, and this applies for trees occupying similar topographic conditions. White cedar's increased exposure, in the 150 years, to scarring strongly suggests that Lake Duparquet water levels at breakup are reaching higher elevations. This is supported by an approximate 100-cm rise in maximum ice-scar height since the end of the 'Little Ice Age'. Years leading to abundant ice scars are those with heavy winter and spring precipitation. Cold Novembers and rainy Aprils also favour major ice-flood episodes. Earlier spring melts could also favour pre-mature ice breakup; a situation that may cause higher-amplitude ice floods. Since the 'Little Ice Age', greater penetration of warm and humid air from the south resulting from a northward migration of the Arctic front may be responsible for the increasing major ice floods registered at Québec's southern boreal forest limit. |
format |
Article in Journal/Newspaper |
author |
Tardif, Jacques Bergeron, Yves |
author_facet |
Tardif, Jacques Bergeron, Yves |
author_sort |
Tardif, Jacques |
title |
Ice-flood history reconstructed with tree- rings from the southern boreal forest limit, western Québec |
title_short |
Ice-flood history reconstructed with tree- rings from the southern boreal forest limit, western Québec |
title_full |
Ice-flood history reconstructed with tree- rings from the southern boreal forest limit, western Québec |
title_fullStr |
Ice-flood history reconstructed with tree- rings from the southern boreal forest limit, western Québec |
title_full_unstemmed |
Ice-flood history reconstructed with tree- rings from the southern boreal forest limit, western Québec |
title_sort |
ice-flood history reconstructed with tree- rings from the southern boreal forest limit, western québec |
publisher |
SAGE Publications |
publishDate |
1997 |
url |
http://dx.doi.org/10.1177/095968369700700305 http://journals.sagepub.com/doi/pdf/10.1177/095968369700700305 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
The Holocene volume 7, issue 3, page 291-300 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/095968369700700305 |
container_title |
The Holocene |
container_volume |
7 |
container_issue |
3 |
container_start_page |
291 |
op_container_end_page |
300 |
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1792497648963420160 |