School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia

School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia

Australia-Pacific Tsunami Research Centre and Natural Hazards Research Laboratory, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia

School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia

Australia-Pacific Tsunami Research Centre and Natural Hazards Research Laboratory, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia

Institute of Sustainable Futures, University of Technology, Sydney, NSW 2007, Australia

Surf Life Saving Australia (SLS), Rosebery, Sydney, NSW 2018, Australia

Australia-Pacific Tsunami Research Centre and Natural Hazards Research Laboratory, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia

School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia