A spatial and temporal comparison of storm wave climates on the south central English coast

Shackleton, Edward (2007) A spatial and temporal comparison of storm wave climates on the south central English coast. BSc dissertation, University of Portsmouth.

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    Abstract

    This study analysed buoy data on the south central English coast, identifying the spatial and temporal variations at different buoy locations for a three-year period. The study used two different methods to analyse spatial and temporal variations in storminess across buoy sites, using significant wave height to identify storms. The variation in direction and peak period of waves measured within a storm were also studied spatially and temporally. The meteorological conditions that generated a select sample of the most extreme events were then investigated.
    It was found that the wave climate at each of the four buoys studied in detail varies both spatially and temporally to differing degrees, depending on the spatial and temporal scales examined. The Rustington and Sandown buoys show most spatial variation in significant wave heights experienced during the study period, however the variation does not remain constant between different storms. The blocking of waves was found to be an important factor, reducing wave heights and restricting directions at both Boscombe and Hayling. The peak period, as well as the significant wave height, showed greater spatial than temporal variation between different storms. The analysis clearly shows that Hayling recorded the largest amount of peak period events above 1m. It is also apparent from this study that Hayling records the most events above 10 seconds peak period in the sixteen hours after a storm. In comparison, Boscombe and Sandown recorded no swell events in the sixteen hours following a storm peak. Analysis of storm events to a 1m cut-off threshold indicated that all buoys had experienced swell events following a storm peak with the exception of Sandown. Due to the limited number of events analysed, meteorological conditions that generated periods of storminess proved difficult to relate to conditions experienced at the buoys. However, the two peak storms and the two events that caused swell at three of the four buoys were related to low pressure systems that tracked to the north of 58 degrees latitude.

    Item Type: Dissertation
    Additional Information: Apologies all efforts were made to include the A3 diagrams in the document however, this was not possible. In the main text a blank page with a figure number refers to the appropriate A3 plot.
    Departments/Research Groups: Faculty of Science > Department of Geography
    Depositing User: Jane Polwin
    Date Deposited: 26 Mar 2013 15:23
    Last Modified: 28 Jan 2015 12:18
    URI: http://eprints.port.ac.uk/id/eprint/11134

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