DIGITAL PHOTOGRAMMETRIC CHANGE ANALYSIS AS APPLIED TO ACTIVE COASTAL DUNES IN MICHIGAN

A pilot study was conducted to investigate the applicability of digital photogrammetric methods to the study and management of dynamic dune systems. Two sets of panchromatic stereographic aerial photographs taken over Ludington State Park, Michigan, one pair each from 1965 (1:20,000-scale) and 1987 (1:15,000-scale), were obtained from historical archives. Stereo models were constructed for the stereo-pairs, using post-processed differential GPS ground control points, and digital elevation models (DEMs) were extracted from each at a resolution of 3 meters. The analysis involved computing differences between the two DEMs at each location, and computing a volume of sediment (sand) flux over the 22-year time period. Maps of elevation change were then constructed and interpreted to suggest patterns resulting from eolian processes. Processes of dune development, movement, and "blowout" were identifiable and measurable.

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  • Corporate Authors:

    American Society for Photogrammetry and Remote Sensing

    5410 Grosvenor Lane, Suite 210
    Bethesda, MD  United States  20814-2160
  • Authors:
    • Brown, D G
    • Arbogast, A F
  • Publication Date: 1999-4

Language

  • English

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Filing Info

  • Accession Number: 00762287
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 13 1999 12:00AM