MacPherson et al 2012.pdf (1.83 MB)
Extreme water level exceedance probabilities around Australia
conference contribution
posted on 2023-05-23, 11:59 authored by MacPherson, LR, Haigh, ID, Mason, MS, Wijeratne, EMS, Pattiaratchi, CB, George, SThe potential impacts of extreme water level events on our coasts are increasing as populations grow and sea levels rise. To better prepare for the future, coastal engineers and managers need accurate estimates of average exceedance probabilities for extreme water levels. In this paper, we estimate present day probabilities of extreme water levels around the entire coastline of Australia. Tides and storm surges generated by extra-tropical storms were included by creating a 61-year (1949-2009) hindcast of water levels using a high resolution depth averaged hydrodynamic model driven with meteorological data from a global reanalysis. Tropical cyclone-induced surges were included through numerical modelling of a database of synthetic tropical cyclones equivalent to 10,000 years of cyclone activity around Australia. Predicted water level data was analysed using extreme value theory to construct return period curves for both the water level hindcast and synthetic tropical cyclone modelling. These return period curves were then combined by taking the highest water level at each return period.
History
Publication title
Coastal Engineering ProceedingsVolume
33Pagination
1-11ISSN
0161-3782Department/School
Institute for Marine and Antarctic StudiesPlace of publication
United StatesEvent title
Proceedings of the Coastal Engineering Conference 2012, 33rd International Conference on Coastal Engineering 2012Event Venue
SpainDate of Event (Start Date)
2012-07-01Date of Event (End Date)
2012-07-06Rights statement
Copyright unknownRepository Status
- Open