Rossouw, MTerblanche, LMoes, J2014-07-182014-07-182013-09Rossouw, M, Terblanche, L and Moes, J. 2013. General characteristics of long waves around the South African Coast. In: Coasts & Ports 2013 Conference : 21st Australasian Coastal and Ocean Engineering Conference and the 14th Australasian Port and Harbour Conference, Sydney, Australia, 11-13 September 2013http://hdl.handle.net/10204/7511Coasts & Ports 2013 Conference : 21st Australasian Coastal and Ocean Engineering Conference and the 14th Australasian Port and Harbour Conference, Sydney, Australia, 11-13 September 2013. "This paper was first published by Engineers Australia and reprinted here with permission. "Long-period waves are almost invisible waves due to the long wave-lengths of several hundreds of metres and heights of only decimetres. The effect of these long waves can, however, be devastating in the form of harbour basin oscillations and their effect on moored ships. Measurements indicate that the South African coast and ports are exposed to relatively high levels of long wave energy. This exposure can lead to significant mooring problems in some of the ports. Data on long waves have been collected in a number of ports where moored ships experienced excessive motions. This information formed the basis of an assessment of the long wave conditions around the South African coast. Since the long waves could be correlated with offshore swell conditions, it was also possible to derive a predictive algorithm to forecast the long waves a number of days in advance.enLong-period wavesSouth African coastPortsMoored shipsHarbour basin oscillationsOffshore swell conditionsConference PresentationRossouw, M., Terblanche, L., & Moes, J. (2013). General characteristics of long waves around the South African Coast. http://hdl.handle.net/10204/7511Rossouw, M, L Terblanche, and J Moes. "General characteristics of long waves around the South African Coast." (2013): http://hdl.handle.net/10204/7511Rossouw M, Terblanche L, Moes J, General characteristics of long waves around the South African Coast; 2013. http://hdl.handle.net/10204/7511 .TY - Conference Presentation AU - Rossouw, M AU - Terblanche, L AU - Moes, J AB - Long-period waves are almost invisible waves due to the long wave-lengths of several hundreds of metres and heights of only decimetres. The effect of these long waves can, however, be devastating in the form of harbour basin oscillations and their effect on moored ships. Measurements indicate that the South African coast and ports are exposed to relatively high levels of long wave energy. This exposure can lead to significant mooring problems in some of the ports. Data on long waves have been collected in a number of ports where moored ships experienced excessive motions. This information formed the basis of an assessment of the long wave conditions around the South African coast. Since the long waves could be correlated with offshore swell conditions, it was also possible to derive a predictive algorithm to forecast the long waves a number of days in advance. DA - 2013-09 DB - ResearchSpace DP - CSIR KW - Long-period waves KW - South African coast KW - Ports KW - Moored ships KW - Harbour basin oscillations KW - Offshore swell conditions LK - https://researchspace.csir.co.za PY - 2013 T1 - General characteristics of long waves around the South African Coast TI - General characteristics of long waves around the South African Coast UR - http://hdl.handle.net/10204/7511 ER -