The University of Southampton
University of Southampton Institutional Repository

Inter-annual variability and longer-term changes in the wave climate of Western Australia between 1970 and 2009

Bosserelle, Cyprien, Pattiaratchi, Charitha and Haigh, Ivan (2012) Inter-annual variability and longer-term changes in the wave climate of Western Australia between 1970 and 2009 Ocean Dynamics, 62, (1), pp. 63-76. (doi:10.1007/s10236-011-0487-3).

Record type: Article

Abstract

Quantifying the long-term variability in wave conditions incident on a coastline is critical for predicting its resilience to future changes in the wave climate. In this study, a 40-year wave hindcast of the southern Indian Ocean has been created to assess the inter-annual variability and longer-term changes in the wave climate around Western Australia (WA) between 1970 and 2009. The model was validated against measurements from five wave buoys located along the WA coast. Changes in the mean annual significant wave height, 90th percentile wave height, peak period and mean wave direction were assessed, and the tracks of all wave events generating wave heights above 7 m were digitised and analysed for significant changes. Results show strong annual and inter-annual variability in the mean significant wave height, the 90th percentile wave height and the number of large events (wave height?>?7 m) that impact the WA coastline. A significant positive trend in annual mean wave height was found in the southwest region of WA over the 40-year simulation. This appears to be due to an increase in intensity of the storm belt in the Southern Ocean which is associated with an increasing positive polarity in the Southern Annular Mode. However, no significant trends were found in the 90th percentile wave height or the number of large wave events impacting Western Australia. Although the number of large wave events in the southern Indian Ocean have increased, their potential to impact the coastal regions of Western Australia are reduced due to storm tracks being located further south, therefore balancing the number of large wave events reaching the WA coast.

Full text not available from this repository.

More information

Published date: 2012
Keywords: Wave climate, Western Australia, Southern Indian Ocean
Organisations: Physical Oceanography, Coastal & Shelf Research

Identifiers

Local EPrints ID: 338393
URI: http://eprints.soton.ac.uk/id/eprint/338393
ISSN: 1616-7341
PURE UUID: 79699f20-afb9-41a7-8edd-05c9a0fe1882

Catalogue record

Date deposited: 14 May 2012 16:14
Last modified: 18 Jul 2017 05:57

Export record

Altmetrics

Contributors

Author: Cyprien Bosserelle
Author: Charitha Pattiaratchi
Author: Ivan Haigh

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×