Variability in rates of coastal change along the Yukon Coast, 1951 to 2015
To better understand the reaction of Arctic coasts to increasing environmental pressure, coastal changes along a 210-km length of the Yukon Territory coast in north-west Canada were investigated. Shoreline positions were acquired from aerial and satellite images between 1951 and 2011. Shoreline chan...
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ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:53134 2023-12-03T10:17:19+01:00 Variability in rates of coastal change along the Yukon Coast, 1951 to 2015 Irrgang, Anna Maria (Dr.) Lantuit, Hugues (Prof. Dr.) Manson, Gavin K. Günther, Frank Grosse, Guido Overduin, Pier Paul 2018-04-06 https://publishup.uni-potsdam.de/frontdoor/index/index/docId/53134 https://doi.org/10.1002/2017JF004326 eng eng https://publishup.uni-potsdam.de/frontdoor/index/index/docId/53134 https://doi.org/10.1002/2017JF004326 info:eu-repo/semantics/closedAccess ddc:550 Institut für Geowissenschaften article doc-type:article 2018 ftubpotsdam https://doi.org/10.1002/2017JF004326 2023-11-05T23:35:04Z To better understand the reaction of Arctic coasts to increasing environmental pressure, coastal changes along a 210-km length of the Yukon Territory coast in north-west Canada were investigated. Shoreline positions were acquired from aerial and satellite images between 1951 and 2011. Shoreline change rates were calculated for multiple time periods along the entire coast and at six key sites. Additionally, Differential Global Positioning System (DGPS) measurements of shoreline positions from seven field sites were used to analyze coastal dynamics from 1991 to 2015 at higher spatial resolution. The whole coast has a consistent, spatially averaged mean rate of shoreline change of 0.7 +/- 0.2 m/a with a general trend of decreasing erosion from west to east. Additional data from six key sites shows that the mean shoreline change rate decreased from -1.3 +/- 0.8 (1950s-1970s) to -0.5 +/- 0.6 m/a (1970s-1990s). This was followed by a significant increase in shoreline change to -1.3 +/- 0.3 m/a in the 1990s to 2011. This increase is confirmed by DGPS measurements that indicate increased erosion rates at local rates up to -8.9 m/a since 2006. Ground surveys and observations with remote sensing data indicate that the current rate of shoreline retreat along some parts of the Yukon coast is higher than at any time before in the 64-year-long observation record. Enhanced availability of material in turn might favor the buildup of gravel features, which have been growing in extent throughout the last six decades. Plain Language Summary The Arctic is warming, but the impacts on its coasts are not well documented. To better understand the reaction of Arctic coasts to increasing environmental pressure, shoreline position changes along a 210-km length of the Yukon Territory coast in northwest Canada were investigated for the time period from 1951 to 2015. Shoreline positions were extracted from historical aerial images from the 1950s, 1970s, and 1990s and from satellite images from 2011. Additionally, measurements of shoreline ... Article in Journal/Newspaper Arctic Yukon University of Potsdam: publish.UP Arctic Yukon Canada Journal of Geophysical Research: Earth Surface 123 4 779 800 |
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University of Potsdam: publish.UP |
op_collection_id |
ftubpotsdam |
language |
English |
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ddc:550 Institut für Geowissenschaften |
spellingShingle |
ddc:550 Institut für Geowissenschaften Irrgang, Anna Maria (Dr.) Lantuit, Hugues (Prof. Dr.) Manson, Gavin K. Günther, Frank Grosse, Guido Overduin, Pier Paul Variability in rates of coastal change along the Yukon Coast, 1951 to 2015 |
topic_facet |
ddc:550 Institut für Geowissenschaften |
description |
To better understand the reaction of Arctic coasts to increasing environmental pressure, coastal changes along a 210-km length of the Yukon Territory coast in north-west Canada were investigated. Shoreline positions were acquired from aerial and satellite images between 1951 and 2011. Shoreline change rates were calculated for multiple time periods along the entire coast and at six key sites. Additionally, Differential Global Positioning System (DGPS) measurements of shoreline positions from seven field sites were used to analyze coastal dynamics from 1991 to 2015 at higher spatial resolution. The whole coast has a consistent, spatially averaged mean rate of shoreline change of 0.7 +/- 0.2 m/a with a general trend of decreasing erosion from west to east. Additional data from six key sites shows that the mean shoreline change rate decreased from -1.3 +/- 0.8 (1950s-1970s) to -0.5 +/- 0.6 m/a (1970s-1990s). This was followed by a significant increase in shoreline change to -1.3 +/- 0.3 m/a in the 1990s to 2011. This increase is confirmed by DGPS measurements that indicate increased erosion rates at local rates up to -8.9 m/a since 2006. Ground surveys and observations with remote sensing data indicate that the current rate of shoreline retreat along some parts of the Yukon coast is higher than at any time before in the 64-year-long observation record. Enhanced availability of material in turn might favor the buildup of gravel features, which have been growing in extent throughout the last six decades. Plain Language Summary The Arctic is warming, but the impacts on its coasts are not well documented. To better understand the reaction of Arctic coasts to increasing environmental pressure, shoreline position changes along a 210-km length of the Yukon Territory coast in northwest Canada were investigated for the time period from 1951 to 2015. Shoreline positions were extracted from historical aerial images from the 1950s, 1970s, and 1990s and from satellite images from 2011. Additionally, measurements of shoreline ... |
format |
Article in Journal/Newspaper |
author |
Irrgang, Anna Maria (Dr.) Lantuit, Hugues (Prof. Dr.) Manson, Gavin K. Günther, Frank Grosse, Guido Overduin, Pier Paul |
author_facet |
Irrgang, Anna Maria (Dr.) Lantuit, Hugues (Prof. Dr.) Manson, Gavin K. Günther, Frank Grosse, Guido Overduin, Pier Paul |
author_sort |
Irrgang, Anna Maria (Dr.) |
title |
Variability in rates of coastal change along the Yukon Coast, 1951 to 2015 |
title_short |
Variability in rates of coastal change along the Yukon Coast, 1951 to 2015 |
title_full |
Variability in rates of coastal change along the Yukon Coast, 1951 to 2015 |
title_fullStr |
Variability in rates of coastal change along the Yukon Coast, 1951 to 2015 |
title_full_unstemmed |
Variability in rates of coastal change along the Yukon Coast, 1951 to 2015 |
title_sort |
variability in rates of coastal change along the yukon coast, 1951 to 2015 |
publishDate |
2018 |
url |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/53134 https://doi.org/10.1002/2017JF004326 |
geographic |
Arctic Yukon Canada |
geographic_facet |
Arctic Yukon Canada |
genre |
Arctic Yukon |
genre_facet |
Arctic Yukon |
op_relation |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/53134 https://doi.org/10.1002/2017JF004326 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1002/2017JF004326 |
container_title |
Journal of Geophysical Research: Earth Surface |
container_volume |
123 |
container_issue |
4 |
container_start_page |
779 |
op_container_end_page |
800 |
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1784264270150631424 |