Earth and Planetary Sciences
5 years ago

Estuarine beach erosion threatens coastal communities, urgent action needed.

Estuarine Coastal and Shelf Science
Multi-scale morphodynamics of an estuarine beach adjacent to a flood-tide delta: Assessing decadal scale erosion
Daniel Harris, Ana Vila‐Concejo, Timothy P. Austin, Javier Benavente

Paper Summary

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Earth and Planetary Sciences
5 years ago

Estuarine beach erosion threatens coastal communities, urgent action needed.

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Estuarine beaches in southeast Australia experience erosion due to sediment transport towards the inner estuary, leading to shoreline retreat since 1963. Winter storm swells cause cross-shore sediment transport, resulting in erosion in exposed areas and limited accretion in sheltered zones. Severe storm events lead to overall beach erosion, with sediment loss not recovered during the study period. Without increased sediment input or shoreline interventions, shoreline retreat is likely to continue.