1. Research Assistant Professor, Centre for Offshore Foundation Systems, Univ. of Western Australia, 35 Stirling Hwy., Crawley, WA 6009, Australia (corresponding author).
2. Professor, School of Civil and Resource Engineering, Univ. of Western Australia, 35 Stirling Hwy., Crawley, WA 6009, Australia.
3. ARC Federation Fellow, Winthrop Professor, Centre for Offshore Foundation Systems, Univ. of Western Australia, 35 Stirling Hwy., Crawley, WA 6009, Australia.