Minimisation of the uncertainty in estimation of extreme coastal wave heights

You, Zai-Jin, Yin, Baoshu, Ji, Zezhou and Hu, Cong (2016) Minimisation of the uncertainty in estimation of extreme coastal wave heights. Journal of Coastal Research, 1 SI 75: 1277-1281. doi:10.2112/SI75-256.1


Author You, Zai-Jin
Yin, Baoshu
Ji, Zezhou
Hu, Cong
Title Minimisation of the uncertainty in estimation of extreme coastal wave heights
Journal name Journal of Coastal Research   Check publisher's open access policy
ISSN 0749-0208
1551-5036
Publication date 2016-03
Sub-type Article (original research)
DOI 10.2112/SI75-256.1
Open Access Status Not yet assessed
Volume 1
Issue SI 75
Start page 1277
End page 1281
Total pages 5
Place of publication Coconut Creek, FL, United States
Publisher Coastal Education & Research Foundation
Collection year 2017
Language eng
Abstract Accurate information on extreme wave conditions is often required for inshore and offshore structure designs, coastal inundation and erosion hazard studies, coastal construction planning, and coastal port operations. Estimates of extreme wave heights are commonly extrapolated from historical wave records based on extreme-value theory. Although a large number of studies have been undertaken to develop and improve methodologies in extreme wave analysis, there still exists much uncertainty in estimates of extreme waves. This study is to investigate main causes of this uncertainty based on historical wave buoy data collected off the NSW coast of Australia. It is found that the uncertainty is caused mainly by short wave record, missing storm wave data, different methods for generation of return wave height data, too low/high POT thresholds, subjective plotting positions, unsuitable distribution functions, different distribution parameter estimators, and ad-hoc criteria on selection of the best-fit function. The likelihood errors of the uncertainty are evaluated and the detail on how to minimise the uncertainty is also proposed.
Keyword Extreme waves
Return wave height
Extreme-value theory
POT
GEV
GPD
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
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