Utilizing InSAR for Landslide Asset Management in Colorado

Interferometric Synthetic Aperture Radar (InSAR) is a satellite-based remote sensing technique that has the ability to observe ground deformation at a centimeter-scale. Currently, AMEC Environment & Infrastructure, Inc is performing a Landslide Asset Management Pilot Project for the Colorado Department of Transportation (CDOT) to assess the applicability of incorporating InSAR technology into a risk based Geotechnical Asset Management (GAM) plan. The goal of this project is to evaluate InSAR as a method for monitoring ground displacement. A primary objective is to determine if InSAR can be used as an indicator of slope or other geological hazard-related movement that could affect the conditions of highways or indicate a potential for a geotechnical asset condition change. For the pilot study, CDOT select three existing landslides to evaluate: 1) Slide Creek Slide (I-70 MP 212), 2) Vail Golf Course Slide (I-70 MP 177), and 3) Jackson Mountain Slide (US 160 MP 151). The ground deformation interpreted by InSAR in this preliminary analysis has been shown to closely match existing data for the three pilot areas and is able to delineate areas experiencing known and potentially unrecognized ground deformation. InSAR is also able to quantify a rate of movement as defined by line of site from the satellite that should prove to be useful in geotechnical asset management. Preliminary results including interferograms and deformation maps for the three pilot study locations are discussed.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 149-162
  • Monograph Title: Proceedings of the 65th Highway Geology Symposium (HGS 2014)

Subject/Index Terms

Filing Info

  • Accession Number: 01639998
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 24 2017 12:11PM