Prediction of wave events using wave-rider buoy data, Mackay

Chapman, Andrew (2001). Prediction of wave events using wave-rider buoy data, Mackay B.Sc Thesis, School of Engineering, The University of Queensland.

       
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Author Chapman, Andrew
Thesis Title Prediction of wave events using wave-rider buoy data, Mackay
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2001-01-01
Thesis type B.Sc Thesis
Supervisor Professor. P Neilson
Jim Waldron
Total pages 29
Language eng
Subjects 09 Engineering
Formatted abstract

The Pacific Ocean and its surface behaviour is a difficult thing to predict and even though models exist to create sea and swell conditions, knowing its behaviour is extremely useful. Wave rider-buoys are capable of being positioned anywhere within beaming distance and constantly record wave activity in a given area allowing a history to develop and a wave climate generated. This type of data is useful in predicting extreme wave events for a given region and also recording how external weather conditions can affect local swell.  

This information has uses in many areas such as coastal engineering where wave forces need to be considered. In order to do this both wave height and period are required. Also Coast Guard and Marine Services benefit from the data since real time updates give indications of off shore swell and severity.  

Signal corruption is the main reason behind the investigation of transferability of current records from the Outer site to the new Inner buoy site which has been placed closer to the receiver to ensure uninterrupted transmission. Currently, the outer buoy is on the edge of the receiver's range, and due to the increase in traffic on the surrounding frequencies in recent years, this has exacerbated the problem. This is evident in data analysis comparisons where the outer buoy, for the last 10 months there has been a loss of 18% of all possible records, well below acceptable levels for a full and complete data set.  

Through statistical and theoretical comparisons of the two data sets it became clear that we would be unable to predict the lost records at the outer site. It was very easy to convert Inner records to the Outer site for the data we had been given, it was simply a linear relationship with height and period. But due to lack of experience in this field and the complexity of factors affecting waves, we could not assume that the linear relationship would continue for the bigger waves. It is recommended that this study be furthered by someone at QGHL with greater experience or that data recording continues until a certain understanding of the wave climate surrounding the buoys is known.

Keyword Wave rider-buoys
Wave events prediction
Additional Notes * Civil Engineering undergraduate theses. 2001

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
 
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