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


Cossu, R and Heatherington, C and Grinham, A and Penesis, I and Hunter, S, A cost-efficient seabed survey for bottom-mounted OWC on King Island, Tasmania, Australia, AWTEC 2018 Proceedings, 09-13 September 2018, Taipei, Taiwan, pp. 411. (2018) [Refereed Conference Paper]


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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 Details

Item Type:Refereed Conference Paper
Keywords:wave energy converter, early-site assessment, seabed survey, sediment transport, geotechnical characteristics
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ocean engineering
Objective Division:Energy
Objective Group:Renewable energy
Objective Field:Wave energy
UTAS Author:Cossu, R (Dr Remo Cossu)
UTAS Author:Penesis, I (Professor Irene Penesis)
ID Code:128694
Year Published:2018
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2018-10-07
Last Modified:2019-03-21
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