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A cost-efficient seabed survey for bottom-mounted OWC on King Island, Tasmania, Australia


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Cossu, R, Heatherington, C, Grinham, A, Penesis, I ORCID: 0000-0003-4570-6034 and Hunter, S 2018 , 'A cost-efficient seabed survey for bottom-mounted OWC on King Island, Tasmania, Australia', paper presented at the The 4th Asian Wave and Tidal Energy Conference (AWTEC 2018), 09-13 September 2018, Taipei, Taiwan.

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This paper presents results from a site assessment for a gravity foundation Oscillating Water Column (OWC) Wave Energy Converter (WEC) designed by Wave Swell Energy (WSE), an Australian wave energy developer. A potential candidate site for this device is the west coast of King Island, Tasmania in relatively shallow water (∼ 10 m LAT). The survey included geotechnical data obtained by sub-bottom profiles, seabed imagery, benthic samples and cores with the aid of SCUBA diving as well as short-term deployment of hydromechanics instruments. Our results show that the device can be placed in an area with enough sand coverage and sufficient bearing capacity. However, the location exhibits evidence of scour and an active sediment regime, which requires a more detailed analysis of the long-term sediment transport processes and associated environmental impacts on a gravity foundation structure.

Item Type: Conference or Workshop Item (Paper)
Authors/Creators:Cossu, R and Heatherington, C and Grinham, A and Penesis, I and Hunter, S
Keywords: wave energy converter, early-site assessment, seabed survey, sediment transport, geotechnical characteristics
Journal or Publication Title: AWTEC 2018 Proceedings
Publisher: National Taiwan Ocean University
Copyright Information:

Copyright 2018 the authors

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