Shoreline Change and Coastal Vulnerability Characterization with Landsat Imagery: A Case Study in the Outer Hebrides, Scotland.

Observation of cause–effect patterns of change in coastal environments provides insights into vulnerable areas and supports prediction and adaptation to flooding and erosion. Historic and periodic (6–8 year intervals) imagery from the Landsat archive is used to investigate transformations in the Atl...

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Publicado en:Scottish Geographical Journal Vol. 130; no. 4; pp. 279 - 300
Autores principales: Gómez, Cristina, Wulder, Michael A., Dawson, Alastair G., Ritchie, William, Green, David R.
Formato: Artículo
Publicado: Taylor & Francis Ltd Dec2014
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Acceso en línea:Ver este registro en EBSCOhost
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        atl: Shoreline Change and Coastal Vulnerability Characterization with Landsat Imagery: A Case Study in the Outer Hebrides, Scotland.
      aug:
        au:
          Gómez, Cristina
          Wulder, Michael A.
          Dawson, Alastair G.
          Ritchie, William
          Green, David R.
        affil:
          Aberdeen Institute for Coastal Science and Management (AICSM), Department of Geography and Environment, School of Geoscience, University of Aberdeen, AberdeenAB24 3UE, Scotland, UK
          Sustainable Forest Management Research Institute, Universidad de Valladolid & INIA, Palencia, 34004, Spain
          Canadian Forest Service (Pacific Forestry Centre), Natural Resources Canada, 506 West Burnside Road, Victoria, British ColumbiaV8Z 1M5, Canada
      su:
        Shoreline monitoring
        Landsat satellites
        Floods
        Erosion
        Western Isles (Scotland)
      sug:
        subj:
          Western Isles (Scotland)
          Shoreline monitoring
          Landsat satellites
          Floods
          Erosion
      keyword:
        Digital Shoreline Analysis System
        Landsat
        Scottish Outer Hebrides
        shoreline change
        spatial analysis
        vulnerability
      ab: Observation of cause–effect patterns of change in coastal environments provides insights into vulnerable areas and supports prediction and adaptation to flooding and erosion. Historic and periodic (6–8 year intervals) imagery from the Landsat archive is used to investigate transformations in the Atlantic coast of two Scottish islands over the period 1989–2011. Supervised classification of spectrally normalized images followed by change detection and spatial analysis reveals the patterns of change and the location of the most dynamic coastal areas. Quantitative measures of recent shifts and movement rates of relevant coastal lines, such as the lower limit of land-based vegetation, are assessed with the Digital Shoreline Analysis System. While very low rates are indicated for horizontal changes in the position of the lower limit of land-based vegetation (0.3 m y−1), specific areas have been subjected to high rates of coastal progradation as well as erosion (e.g. 2.5 m y−1at Stilligarry). Information derived from satellite data supports the characterization of geomorphologically dynamic coasts at regional scales. With a rich and open access archive of imagery, a commitment to continuity, and compatibility with the Earth observation missions of other space programs, the Landsat mission offers useful and otherwise unavailable data for monitoring of coastal areas.
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    language: English
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