Aerial Characterization of Karst for Wind Development

Wind energy developments encompass large tracts of land, and assessment and characterization of those areas is essential for proper planning and assessing feasibility of development. These sites are typically more than 1,000 hectares (many square miles). In areas where carbonate or evaporate geologies predominate, assessment of karst features is necessary to evaluate development risks associated with foundation and roadway construction and long-term subsidence/collapse risk for the proposed facilities. A simple measure of these risks can be assessed by identification of the presence and distribution of karst collapses and depressions within the wind energy site. This paper presents the use of aerial imagery and digital modeling to identify surface depressions. The paper presents the methodology and verification measures used to assess a proposed wind energy site of more than 8 square miles. Ground truth was established by visual reconnaissance on foot using global positioning system (GPS) location and showed the aerial mapping to be accurate to within fractions of a meter. The paper presents the findings and demonstrates that aerial and digital tools are an economical and highly accurate method for assessing the presence of karst features and is a useful tool for characterization of large areas.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 931-942
  • Monograph Title: Geo-Congress 2014 Technical Papers: Geo-Characterization and Modeling for Sustainability

Subject/Index Terms

Filing Info

  • Accession Number: 01522566
  • Record Type: Publication
  • ISBN: 9780784413272
  • Files: TRIS, ASCE
  • Created Date: Mar 25 2014 3:04PM