Analysis of changes in landforms on the Black Ven mudslide, Dorset, between 1969 and 1999

McFarlane, Karen (2007) Analysis of changes in landforms on the Black Ven mudslide, Dorset, between 1969 and 1999. BSc dissertation, University of Portsmouth.

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    Abstract

    The inconsistent nature of the rock structure on the Dorset coast and the combination of a number of external factors, have contributed to make Black Ven the largest mudslide complex in Europe. This dissertation uses digital photogrammetric techniques to create photo-maps and digital elevation models, on which the geomorphological features of the mudslide can be mapped and tracked over a 30-year period. The production of comparison graphs of the main features and the profiling of the site meant that erosion rates and areas of changing stability could be identified; with rotational slumping and mass sliding being the most identifiable causes of material movement. There was a large variation in activity across the site, with western side becoming increasingly active, the highly active central area continuing to expel material and the eastern side stabilizing. Both the upper slopes and the toes showed periods of activity and stability with this being a result of conflicting methods of erosion, geologic and hydraulic complexity and the interaction with marine processes.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Science > Department of Geography
    Depositing User: Jane Polwin
    Date Deposited: 20 Jan 2011 12:47
    Last Modified: 28 Jan 2015 11:13
    URI: http://eprints.port.ac.uk/id/eprint/346

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