Xuelin Ding¹, Giovanni Coco², Robert T Guza³, Roland Garnier⁴, Colin Whittaker⁵, Robert A Dalrymple⁶, Zhangping Wei⁷, Pedro Lomonaco⁸, Paolo Blondeaux⁹ and Giovanna Vittori⁹, (1)University of Auckland, School of Environment, Auckland, New Zealand, (2)University of Auckland, Auckland, New Zealand, (3)Scripps Institution of Oceanography, La Jolla, CA, United States, (4)Environmental Hydraulics Institute, Universidad de Cantabria, Santander, Spain, (5)University of Auckland, Civil and Environmental Engineering, Auckland, New Zealand, (6)Johns Hopkins University, Department of Civil Engineering, Baltimore, MD, United States, (7)Johns Hopkins University, Baltimore, MD, United States, (8)Oregon State University, Corvallis, OR, United States, (9)University of Genova, Genova, Italy