Positive SOI, negative PDO and spring tides as simple indicators of the potential for extreme coastal erosion in northern NSW

Article

Proudfoot, M. and Singh Peterson, L.. 2011. "Positive SOI, negative PDO and spring tides as simple indicators of the potential for extreme coastal erosion in northern NSW." Australasian Journal of Environmental Management. 18 (3), pp. 170-181. https://doi.org/10.1080/14486563.2011.598257
Article Title

Positive SOI, negative PDO and spring tides as simple indicators of the potential for extreme coastal erosion in northern NSW

ERA Journal ID5805
Article CategoryArticle
AuthorsProudfoot, M. (Author) and Singh Peterson, L. (Author)
Journal TitleAustralasian Journal of Environmental Management
Journal Citation18 (3), pp. 170-181
Number of Pages12
Year2011
PublisherTaylor & Francis
Place of PublicationUnited Kingdom
ISSN1448-6563
2159-5356
Digital Object Identifier (DOI)https://doi.org/10.1080/14486563.2011.598257
Web Address (URL)https://www.tandfonline.com/doi/abs/10.1080/14486563.2011.598257
Abstract

The coastal Township of Kingscliff in northern NSW experienced severe erosion during 2010, resulting in the loss of 2 hectares of vegetated dune along a 200 metre length of foreshore. The catalyst for this erosion was a unique pattern of large waves from an easterly direction in early 2009 that resulted in the gradual lowering of the beach profile and led to severe erosion on spring tides in 2010. This erosion has coincided with the onset of a La Nina event and the beginning of a negative phase for the Pacific Decadal Oscillation. Analysis of past and current erosion events at Kingscliff shows a strong relationship between positive SOI, negative PDO, spring tides and severe erosion at Kingscliff. These indicators could act as simple indicators of the potential for extreme coastal erosion along the east coast of NSW allowing early implementation of mitigation strategies.

KeywordsCoastal erosion; Coastal management; Coastal policy; PDO; SOI; Spring tide
ANZSRC Field of Research 2020410199. Climate change impacts and adaptation not elsewhere classified
410402. Environmental assessment and monitoring
370903. Natural hazards
Byline AffiliationsSouthern Cross University
Institution of OriginUniversity of Southern Queensland
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