Terrestrial processes affecting unlithified coastal erosion disparities in central fjords of Svalbard
Terrestrial influences of coastal cliff morphology and hydrological impact on coastal erosion in unlithified cliff sediments in the inner fjords of Svalbard are assessed. Differential global positioning system measurements have been taken annually over the past two to four years at four field sites...
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Norwegian Polar Institute
2015
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ftjpolarres:oai:journals.openacademia.net:article/3222 2024-06-23T07:56:19+00:00 Terrestrial processes affecting unlithified coastal erosion disparities in central fjords of Svalbard Sessford, Evangeline G. Bæverfjord, Maj Gøril Hormes, Anne 2015-09-28 application/pdf text/html application/epub+zip application/xml https://polarresearch.net/index.php/polar/article/view/3222 https://doi.org/10.3402/polar.v34.24122 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3222/pdf_45 https://polarresearch.net/index.php/polar/article/view/3222/html_36 https://polarresearch.net/index.php/polar/article/view/3222/_37 https://polarresearch.net/index.php/polar/article/view/3222/xml_35 https://polarresearch.net/index.php/polar/article/view/3222/8261 https://polarresearch.net/index.php/polar/article/view/3222 doi:10.3402/polar.v34.24122 Polar Research; Vol 34 (2015) 1751-8369 Terrestrial-sourced hazards coastal erosion coastal geomorphology Digital Shoreline Analysis System Svalbard info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftjpolarres https://doi.org/10.3402/polar.v34.24122 2024-06-13T23:33:00Z Terrestrial influences of coastal cliff morphology and hydrological impact on coastal erosion in unlithified cliff sediments in the inner fjords of Svalbard are assessed. Differential global positioning system measurements have been taken annually over the past two to four years at four field sites in central Svalbard. Measurements were combined with aerial imagery using ArcGIS and the Digital Shoreline Analysis System to calculate rates of erosion in varying geomorphological cliff types. A total of 750 m of coast was divided into two main cliff types: ice-poor and ice-rich tundra cliffs and further divided based on their sediment depositional character and processes currently acting upon sediments. The results show that the most consistent erosion rates occur in the ice-poor cliffs (0.34 m/yr), whereas the most irregular and highest rates occur in ice-rich cliffs (0.47 m/yr). Throughout the study, no waves were observed to reach cliff toes, and therefore erosion rates are considered to reflect an effect of terrestrial processes, rather than wave action. Terrestrial hydrological processes are the driving factors for cliff erosion through winter precipitation for ice-poor cliffs and summer precipitation for ice-rich cliffs. Sediment removal from the base of the cliffs appears to be mainly conducted by sea ice and the ice foot during break up as waves did not reach the base of the studied cliffs during the observed period.Keywords: Terrestrial-sourced hazards; coastal erosion; coastal geomorphology; Digital Shoreline Analysis System; Svalbard(Published: 28 September 2015)To access the supplementary material for this article, please see supplementary files in the column to the right (under Article Tools).Citation: Polar Research 2015, 34, 24122, http://dx.doi.org/10.3402/polar.v34.24122 Article in Journal/Newspaper Polar Research Sea ice Svalbard Tundra Polar Research Svalbard Polar Research 34 1 24122 |
institution |
Open Polar |
collection |
Polar Research |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Terrestrial-sourced hazards coastal erosion coastal geomorphology Digital Shoreline Analysis System Svalbard |
spellingShingle |
Terrestrial-sourced hazards coastal erosion coastal geomorphology Digital Shoreline Analysis System Svalbard Sessford, Evangeline G. Bæverfjord, Maj Gøril Hormes, Anne Terrestrial processes affecting unlithified coastal erosion disparities in central fjords of Svalbard |
topic_facet |
Terrestrial-sourced hazards coastal erosion coastal geomorphology Digital Shoreline Analysis System Svalbard |
description |
Terrestrial influences of coastal cliff morphology and hydrological impact on coastal erosion in unlithified cliff sediments in the inner fjords of Svalbard are assessed. Differential global positioning system measurements have been taken annually over the past two to four years at four field sites in central Svalbard. Measurements were combined with aerial imagery using ArcGIS and the Digital Shoreline Analysis System to calculate rates of erosion in varying geomorphological cliff types. A total of 750 m of coast was divided into two main cliff types: ice-poor and ice-rich tundra cliffs and further divided based on their sediment depositional character and processes currently acting upon sediments. The results show that the most consistent erosion rates occur in the ice-poor cliffs (0.34 m/yr), whereas the most irregular and highest rates occur in ice-rich cliffs (0.47 m/yr). Throughout the study, no waves were observed to reach cliff toes, and therefore erosion rates are considered to reflect an effect of terrestrial processes, rather than wave action. Terrestrial hydrological processes are the driving factors for cliff erosion through winter precipitation for ice-poor cliffs and summer precipitation for ice-rich cliffs. Sediment removal from the base of the cliffs appears to be mainly conducted by sea ice and the ice foot during break up as waves did not reach the base of the studied cliffs during the observed period.Keywords: Terrestrial-sourced hazards; coastal erosion; coastal geomorphology; Digital Shoreline Analysis System; Svalbard(Published: 28 September 2015)To access the supplementary material for this article, please see supplementary files in the column to the right (under Article Tools).Citation: Polar Research 2015, 34, 24122, http://dx.doi.org/10.3402/polar.v34.24122 |
format |
Article in Journal/Newspaper |
author |
Sessford, Evangeline G. Bæverfjord, Maj Gøril Hormes, Anne |
author_facet |
Sessford, Evangeline G. Bæverfjord, Maj Gøril Hormes, Anne |
author_sort |
Sessford, Evangeline G. |
title |
Terrestrial processes affecting unlithified coastal erosion disparities in central fjords of Svalbard |
title_short |
Terrestrial processes affecting unlithified coastal erosion disparities in central fjords of Svalbard |
title_full |
Terrestrial processes affecting unlithified coastal erosion disparities in central fjords of Svalbard |
title_fullStr |
Terrestrial processes affecting unlithified coastal erosion disparities in central fjords of Svalbard |
title_full_unstemmed |
Terrestrial processes affecting unlithified coastal erosion disparities in central fjords of Svalbard |
title_sort |
terrestrial processes affecting unlithified coastal erosion disparities in central fjords of svalbard |
publisher |
Norwegian Polar Institute |
publishDate |
2015 |
url |
https://polarresearch.net/index.php/polar/article/view/3222 https://doi.org/10.3402/polar.v34.24122 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Polar Research Sea ice Svalbard Tundra |
genre_facet |
Polar Research Sea ice Svalbard Tundra |
op_source |
Polar Research; Vol 34 (2015) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3222/pdf_45 https://polarresearch.net/index.php/polar/article/view/3222/html_36 https://polarresearch.net/index.php/polar/article/view/3222/_37 https://polarresearch.net/index.php/polar/article/view/3222/xml_35 https://polarresearch.net/index.php/polar/article/view/3222/8261 https://polarresearch.net/index.php/polar/article/view/3222 doi:10.3402/polar.v34.24122 |
op_doi |
https://doi.org/10.3402/polar.v34.24122 |
container_title |
Polar Research |
container_volume |
34 |
container_issue |
1 |
container_start_page |
24122 |
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1802649345073348608 |