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Cosmogenic exposure dating reveals limited long-term variability in erosion of a rocky coastline

Swirad, Z.M.; Rosser, N.J.; Brain, M.J.; Rood, D.H.; Hurst, M.D.; Wilcken, K.M.; Barlow, J.

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Authors

Z.M. Swirad

D.H. Rood

M.D. Hurst

K.M. Wilcken

J. Barlow



Contributors

Abstract

Predicted sea-level rise and increased storminess are anticipated to lead to increases in coastal erosion. However, assessing if and how rocky coasts will respond to changes in marine conditions is difficult due to current limitations of monitoring and modelling. Here,we measured cosmogenic 10Be concentrations across a sandstone shore platform in North Yorkshire, UK, to model the changes in coastal erosion within the last 7 kyr and for the first time quantify the relative long-term erosive contribution of landward cliff retreat, and down wearing and stripping of rock from the shore platform. The results suggest that the cliff has been retreating at a steady rate of 4.5 ± 0.63 cm yr-1, whilst maintaining a similar profile form. Our results imply a lack of a direct relationship between relative sea level over centennial to millennial timescales and the erosion response of the coast, highlighting a need to more fully characterise the spatial variability in, and controls on, rocky coast erosion under changing conditions.

Citation

Swirad, Z., Rosser, N., Brain, M., Rood, D., Hurst, M., Wilcken, K., & Barlow, J. (2020). Cosmogenic exposure dating reveals limited long-term variability in erosion of a rocky coastline. Nature Communications, 11, Article 3804. https://doi.org/10.1038/s41467-020-17611-9

Journal Article Type Article
Acceptance Date Jul 8, 2020
Online Publication Date Jul 30, 2020
Publication Date 2020
Deposit Date Jul 8, 2020
Publicly Available Date Aug 12, 2020
Journal Nature Communications
Publisher Nature Research
Peer Reviewed Peer Reviewed
Volume 11
Article Number 3804
DOI https://doi.org/10.1038/s41467-020-17611-9

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http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Advance online version This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.





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