Post-Little Ice Age development of a High Arctic paraglacial beach complex.
We reconstruct the behaviour of a High Arctic gravel-dominated beach complex that has developed in central Spitsbergen, Svalbard, since the end of the Little Ice Age (LIA). The studied coastal environment in northern Billefjorden (Petuniabukta) is characterised by limited wave action and ephemeral s...
Published in: | Permafrost and Periglacial Processes |
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John Wiley
2017
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Online Access: | http://dro.dur.ac.uk/16571/ http://dro.dur.ac.uk/16571/1/16571.pdf https://doi.org/10.1002/ppp.1879 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:16571 2023-05-15T14:51:57+02:00 Post-Little Ice Age development of a High Arctic paraglacial beach complex. Strzelecki, M.C. Long, A.J. Lloyd, J.M. 2017-01-18 application/pdf http://dro.dur.ac.uk/16571/ http://dro.dur.ac.uk/16571/1/16571.pdf https://doi.org/10.1002/ppp.1879 unknown John Wiley dro:16571 issn:1045-6740 issn: 1099-1530 doi:10.1002/ppp.1879 http://dro.dur.ac.uk/16571/ https://doi.org/10.1002/ppp.1879 http://dro.dur.ac.uk/16571/1/16571.pdf This is the accepted version of the following article: Strzelecki, M. C., Long, A. J., and Lloyd, J. M. (2017) Post-Little Ice Age Development of a High Arctic Paraglacial Beach Complex. Permafrost and Periglacial Processes, 28(1): 4-17, which has been published in final form at https://doi.org/10.1002/ppp.1879. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving. Permafrost and periglacial processes, 2017, Vol.28(1), pp.4-17 [Peer Reviewed Journal] Coastal evolution Beach-ridge plain Spit morphodynamics Paraglacial High Arctic Svalbard Article PeerReviewed 2017 ftunivdurham https://doi.org/10.1002/ppp.1879 2020-06-11T22:23:13Z We reconstruct the behaviour of a High Arctic gravel-dominated beach complex that has developed in central Spitsbergen, Svalbard, since the end of the Little Ice Age (LIA). The studied coastal environment in northern Billefjorden (Petuniabukta) is characterised by limited wave action and ephemeral sediment delivery from non-glaciated, mainly snow-fed fans and talus slopes. Aerial photographic evidence and morpho-sedimentological observations of a beach-ridge plain and spit complex in northern Billefjorden reveal a dynamic coastal system. During the post-LIA period, a prominent coastal barrier at the mouth of the Ebbaelva migrated seawards several tens of metres and prograded northwards to form new spit systems, each > 150 m in length. The post-LIA coastal evolution occurred in two main phases. In the first half of the 20th century, increased paraglacial sediment released by retreating land-based glaciers led to the development of a subaqueous spit platform and the progradation of an ebb-tide delta into the mouth of the Ebbaelva, diverting its mouth to the northwest. In the second half of the 20th century, the barrier prograded onto this platform, promoting the development of three massive spits. Sedimentological data suggest that changes in beach-ridge composition that occurred during the 20th century are linked to episodic sediment delivery from an adjacent permafrost and snow-fed alluvial fan and delta system. Our work provides a basis for a new model of paraglacial barrier development that recognises the fundamental role of climate and sediment supply as two intimately connected processes that control coastal development in the High Arctic over decadal to centennial timescales. Article in Journal/Newspaper Arctic Billefjorden Ice permafrost Permafrost and Periglacial Processes Svalbard Spitsbergen Durham University: Durham Research Online Arctic Billefjorden ENVELOPE(16.417,16.417,78.563,78.563) Ebbaelva ENVELOPE(16.633,16.633,78.700,78.700) Petuniabukta ENVELOPE(16.532,16.532,78.687,78.687) Svalbard Permafrost and Periglacial Processes 28 1 4 17 |
institution |
Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
topic |
Coastal evolution Beach-ridge plain Spit morphodynamics Paraglacial High Arctic Svalbard |
spellingShingle |
Coastal evolution Beach-ridge plain Spit morphodynamics Paraglacial High Arctic Svalbard Strzelecki, M.C. Long, A.J. Lloyd, J.M. Post-Little Ice Age development of a High Arctic paraglacial beach complex. |
topic_facet |
Coastal evolution Beach-ridge plain Spit morphodynamics Paraglacial High Arctic Svalbard |
description |
We reconstruct the behaviour of a High Arctic gravel-dominated beach complex that has developed in central Spitsbergen, Svalbard, since the end of the Little Ice Age (LIA). The studied coastal environment in northern Billefjorden (Petuniabukta) is characterised by limited wave action and ephemeral sediment delivery from non-glaciated, mainly snow-fed fans and talus slopes. Aerial photographic evidence and morpho-sedimentological observations of a beach-ridge plain and spit complex in northern Billefjorden reveal a dynamic coastal system. During the post-LIA period, a prominent coastal barrier at the mouth of the Ebbaelva migrated seawards several tens of metres and prograded northwards to form new spit systems, each > 150 m in length. The post-LIA coastal evolution occurred in two main phases. In the first half of the 20th century, increased paraglacial sediment released by retreating land-based glaciers led to the development of a subaqueous spit platform and the progradation of an ebb-tide delta into the mouth of the Ebbaelva, diverting its mouth to the northwest. In the second half of the 20th century, the barrier prograded onto this platform, promoting the development of three massive spits. Sedimentological data suggest that changes in beach-ridge composition that occurred during the 20th century are linked to episodic sediment delivery from an adjacent permafrost and snow-fed alluvial fan and delta system. Our work provides a basis for a new model of paraglacial barrier development that recognises the fundamental role of climate and sediment supply as two intimately connected processes that control coastal development in the High Arctic over decadal to centennial timescales. |
format |
Article in Journal/Newspaper |
author |
Strzelecki, M.C. Long, A.J. Lloyd, J.M. |
author_facet |
Strzelecki, M.C. Long, A.J. Lloyd, J.M. |
author_sort |
Strzelecki, M.C. |
title |
Post-Little Ice Age development of a High Arctic paraglacial beach complex. |
title_short |
Post-Little Ice Age development of a High Arctic paraglacial beach complex. |
title_full |
Post-Little Ice Age development of a High Arctic paraglacial beach complex. |
title_fullStr |
Post-Little Ice Age development of a High Arctic paraglacial beach complex. |
title_full_unstemmed |
Post-Little Ice Age development of a High Arctic paraglacial beach complex. |
title_sort |
post-little ice age development of a high arctic paraglacial beach complex. |
publisher |
John Wiley |
publishDate |
2017 |
url |
http://dro.dur.ac.uk/16571/ http://dro.dur.ac.uk/16571/1/16571.pdf https://doi.org/10.1002/ppp.1879 |
long_lat |
ENVELOPE(16.417,16.417,78.563,78.563) ENVELOPE(16.633,16.633,78.700,78.700) ENVELOPE(16.532,16.532,78.687,78.687) |
geographic |
Arctic Billefjorden Ebbaelva Petuniabukta Svalbard |
geographic_facet |
Arctic Billefjorden Ebbaelva Petuniabukta Svalbard |
genre |
Arctic Billefjorden Ice permafrost Permafrost and Periglacial Processes Svalbard Spitsbergen |
genre_facet |
Arctic Billefjorden Ice permafrost Permafrost and Periglacial Processes Svalbard Spitsbergen |
op_source |
Permafrost and periglacial processes, 2017, Vol.28(1), pp.4-17 [Peer Reviewed Journal] |
op_relation |
dro:16571 issn:1045-6740 issn: 1099-1530 doi:10.1002/ppp.1879 http://dro.dur.ac.uk/16571/ https://doi.org/10.1002/ppp.1879 http://dro.dur.ac.uk/16571/1/16571.pdf |
op_rights |
This is the accepted version of the following article: Strzelecki, M. C., Long, A. J., and Lloyd, J. M. (2017) Post-Little Ice Age Development of a High Arctic Paraglacial Beach Complex. Permafrost and Periglacial Processes, 28(1): 4-17, which has been published in final form at https://doi.org/10.1002/ppp.1879. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving. |
op_doi |
https://doi.org/10.1002/ppp.1879 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
28 |
container_issue |
1 |
container_start_page |
4 |
op_container_end_page |
17 |
_version_ |
1766323084638289920 |