Marcello Vichi¹, Clare Eayrs², Alberto Alberello³, Anriette Bekker⁴, Luke Bennetts⁵, David Holland⁶, Ehlke de Jong⁷, Warren Joubert⁸, Keith MacHutchon⁹, Gabriele Messori¹⁰, Jhon Mojica², Miguel Onorato¹¹, Sebastian Skatulla⁹ and Alessandro Toffoli³, (1)University of Cape Town, Department of Oceanography and Marine Research Institute, Cape Town, South Africa, (2)New York University Abu Dhabi, Centre for Global Sea Level Change, Abu Dhabi, United Arab Emirates, (3)University of Melbourne, Department of Infrastructure Engineering, Parkville, Australia, (4)Stellenbosch University, Sound and Vibration Research Group, Department of Mechanical and Mechatronic Engineering, Stellenbosch, South Africa, (5)School of Mathematical Sciences, Adelaide, SA, Australia, (6)New York University, Courant Institute of Mathematical Sciences, New York, NY, United States, (7)University of Cape Town, Department of Oceanography, Cape Town, South Africa, (8)South African Weather Service, Cape Town, South Africa, (9)University of Cape Town, Department of Civil Engineering and Marine Research Institute, Cape Town, South Africa, (10)Stockholm University, Stockholm, Sweden, (11)University of Turin, Department of Physics, Turin, Italy