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Interannual Variability in Dominant Shoreline Behaviour at an Embayed Beach by Raimundo Ibaceta; Mitchell D. Harley; Ian L. Turner; Kristen D. Splinter is a Earth and Planetary Sciences article available to read on EtoBox.

What is Interannual Variability in Dominant Shoreline Behaviour at an Embayed Beach about?

Shoreline variability at embayed beaches can be characterized into modes where either longshore or cross-shore sediment transport processes dominate the overall shoreline response, or there is a mixed combination of the two. To-date it has been assumed that the relative dominance of these differing modes of longshore and/or cross-shore shoreline behaviour is stationary in time. This concept is tested using a unique 43-year dataset of shoreline positions at Narrabeen-Collaroy beach (southeast Australia) and a rolling five-year window Empirical Orthogonal Function analysis, revealing the new observation of a distinct interannual variability in the dominant cross-shore and longshore modes of shoreline behaviour at this site. The dominant mode of shoreline behaviour was found to range from time periods when the cross-shore mode (referred to as the cross-shore coherent mode) comprised as much as 74 % of the overall shoreline variability, contrasting to other time periods when the alongshore mode of shoreline behaviour (longshore coherent mode) was more dominant, accounting for up to 62 % of the observed shoreline variability. Wave forcing correlation analysis suggests that these modes a

Who reads Interannual Variability in Dominant Shoreline Behaviour at an Embayed Beach?

Author

Raimundo Ibaceta; Mitchell D. Harley; Ian L. Turner; Kristen D. Splinter

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)