The impact of climate change on an emerging coastline affected by discontinuous permafrost: Manitounuk Strait, northern Quebec
A comparative analysis of air photos and a field survey show that permafrost-affected sectors of the coastline along Manitounuk Strait receded at an increasing rate between 1950 and 1995. These sectors are in bays where post-glacial Tyrrell Sea clays outcrop. During the same period, sand beaches at...
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Online Access: | http://dx.doi.org/10.1139/e03-056 http://www.nrcresearchpress.com/doi/pdf/10.1139/e03-056 |
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crcansciencepubl:10.1139/e03-056 2023-12-17T10:31:30+01:00 The impact of climate change on an emerging coastline affected by discontinuous permafrost: Manitounuk Strait, northern Quebec Beaulieu, Nancy Allard, Michel 2003 http://dx.doi.org/10.1139/e03-056 http://www.nrcresearchpress.com/doi/pdf/10.1139/e03-056 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 40, issue 10, page 1393-1404 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 2003 crcansciencepubl https://doi.org/10.1139/e03-056 2023-11-19T13:38:58Z A comparative analysis of air photos and a field survey show that permafrost-affected sectors of the coastline along Manitounuk Strait receded at an increasing rate between 1950 and 1995. These sectors are in bays where post-glacial Tyrrell Sea clays outcrop. During the same period, sand beaches at the mouths of streams and rock and till shorelines on headlands prograded at the pace of isostatic uplift. Permafrost that had aggraded and formed lithalsas and plateaus during the 19th century (i.e., during the Little Ice Age) had expanded over the tidal marsh and had locally provoked accelerated coastal emergence as frost heaving added to post-glacial isostatic uplift. Climate warming during the 20th century, particularly during the summer months, generated a chain of impacts involving forest growth, snow cover, ground warming, and permafrost degradation. Waves and tidal currents are mainly responsible for the evacuation and transport of thermokarst-produced silts and clays from the shore into the marine basin. Article in Journal/Newspaper Ice permafrost Thermokarst Canadian Science Publishing (via Crossref) Tyrrell ENVELOPE(-69.512,-69.512,-69.634,-69.634) Canadian Journal of Earth Sciences 40 10 1393 1404 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Beaulieu, Nancy Allard, Michel The impact of climate change on an emerging coastline affected by discontinuous permafrost: Manitounuk Strait, northern Quebec |
topic_facet |
General Earth and Planetary Sciences |
description |
A comparative analysis of air photos and a field survey show that permafrost-affected sectors of the coastline along Manitounuk Strait receded at an increasing rate between 1950 and 1995. These sectors are in bays where post-glacial Tyrrell Sea clays outcrop. During the same period, sand beaches at the mouths of streams and rock and till shorelines on headlands prograded at the pace of isostatic uplift. Permafrost that had aggraded and formed lithalsas and plateaus during the 19th century (i.e., during the Little Ice Age) had expanded over the tidal marsh and had locally provoked accelerated coastal emergence as frost heaving added to post-glacial isostatic uplift. Climate warming during the 20th century, particularly during the summer months, generated a chain of impacts involving forest growth, snow cover, ground warming, and permafrost degradation. Waves and tidal currents are mainly responsible for the evacuation and transport of thermokarst-produced silts and clays from the shore into the marine basin. |
format |
Article in Journal/Newspaper |
author |
Beaulieu, Nancy Allard, Michel |
author_facet |
Beaulieu, Nancy Allard, Michel |
author_sort |
Beaulieu, Nancy |
title |
The impact of climate change on an emerging coastline affected by discontinuous permafrost: Manitounuk Strait, northern Quebec |
title_short |
The impact of climate change on an emerging coastline affected by discontinuous permafrost: Manitounuk Strait, northern Quebec |
title_full |
The impact of climate change on an emerging coastline affected by discontinuous permafrost: Manitounuk Strait, northern Quebec |
title_fullStr |
The impact of climate change on an emerging coastline affected by discontinuous permafrost: Manitounuk Strait, northern Quebec |
title_full_unstemmed |
The impact of climate change on an emerging coastline affected by discontinuous permafrost: Manitounuk Strait, northern Quebec |
title_sort |
impact of climate change on an emerging coastline affected by discontinuous permafrost: manitounuk strait, northern quebec |
publisher |
Canadian Science Publishing |
publishDate |
2003 |
url |
http://dx.doi.org/10.1139/e03-056 http://www.nrcresearchpress.com/doi/pdf/10.1139/e03-056 |
long_lat |
ENVELOPE(-69.512,-69.512,-69.634,-69.634) |
geographic |
Tyrrell |
geographic_facet |
Tyrrell |
genre |
Ice permafrost Thermokarst |
genre_facet |
Ice permafrost Thermokarst |
op_source |
Canadian Journal of Earth Sciences volume 40, issue 10, page 1393-1404 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e03-056 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
40 |
container_issue |
10 |
container_start_page |
1393 |
op_container_end_page |
1404 |
_version_ |
1785584824467062784 |