Untitled - Teknik Kelautan / ITB
Untitled - Teknik Kelautan / ITB
Untitled - Teknik Kelautan / ITB
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Theoretical Wave Spectrum in Indonesia<br />
Setiyawan 1 , Hang Tuah Salim 2 , Safwan Hadi 3 & Iwan K Hadihardaja 4<br />
1,4 Department of Civil Engineering, Bandung Institute of Technology<br />
2 Department of Ocean Engineering, Bandung Institute of Technology<br />
3 Department of Oceanography Engineering, Bandung Institute of Technology<br />
Bandung, West Java, Indonesia<br />
Email: setiyawanvip@yahoo.co.id<br />
Abstract. Approach to selecting the design wave environment considers the wave<br />
spectrum. In this case Indonesian coastal area (Sabang, Meulaboh, Pacitan, Jepara,<br />
Jeneponto and Muarawahau) a suitable wave spectrum model is chosen representing<br />
an appropriate density distribution of the sea waves at the site under consideration.<br />
The most suitable spectrum is a measured design wave spectrum at the site, although<br />
such a spectrum is seldom available. As an alternative, one chooses one of the<br />
theoretical spectrum models available based on the fetch, wind and other<br />
meteorological conditions of the site. The chosen wave spectrum, of course describes<br />
a short term wave condition. A combination of theoritical wave spectrum, short term<br />
wave measurement, and wave forecasting developed by Joing North Sea Wave<br />
Project (JONSWAP) ware applied in order to determine the design wave height and<br />
period. Theoritical wave spectrum were calibrated with the observations wave<br />
spectrum using fast fourier transform developed by Cooley and Tukey.<br />
Keywords: Design wave environment, fast fourier transform, JONSWAP spectrum,<br />
theoritical wave spectrum, wave measurement.<br />
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