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Post-Little Ice Age development of a High Arctic paraglacial beach complex

Strzelecki, M.C.; Long, A.J.; Lloyd, J.M.

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M.C. Strzelecki


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.


Strzelecki, M., Long, A., & Lloyd, J. (2017). Post-Little Ice Age development of a High Arctic paraglacial beach complex. Permafrost and Periglacial Processes, 28(1), 4-17.

Journal Article Type Article
Acceptance Date Sep 23, 2015
Online Publication Date Dec 8, 2015
Publication Date Jan 18, 2017
Deposit Date Oct 9, 2015
Publicly Available Date Dec 8, 2016
Journal Permafrost and Periglacial Processes
Print ISSN 1045-6740
Electronic ISSN 1099-1530
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 28
Issue 1
Pages 4-17
Keywords Coastal evolution, Beach-ridge plain, Spit morphodynamics, Paraglacial, High Arctic, Svalbard.


Accepted Journal Article (1.9 Mb)

Copyright Statement
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 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

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