Applications of Synthetic Aperture Radar Interferometry in the study of the Nahanni earthquake region
Ristau, Johannes P.
In this thesis, Synthetic Aperture Radar (SAR) Interferometry (InSAR) is used to monitor ground displacement in the North Nahanni River region and create digital elevation models (DEM's). InSAR has been shown to be a valuable tool for monitoring relative surface displacement due to various crustal movements and for creating accurate DEM's using pairs of SAR images. In this thesis SAR data from Canada's RADARSAT and European Space Agency's ERS-1 satellites were used to create differential interferograms and DEM's. The main objectives of this study included measurement of fault slips caused by a large earthquake(s) with magnitude(s) larger than 6.0. However, there were no large earthquakes during the acquisition of the InSAR data pairs and therefore them was no detectable crustal movements caused by earthquakes. Consequently this study was more focused on the creation of accurate DEM's of the study area from the interferograms. DEM's created from the RADARSAT and ERS-1 images were compared with a DEM providedby Geomatics Canada Centre for Topographic Information and 1:50 000 topographic maps of the Nahanni region. Both two-pass and three-pass differential interferometry was attempted using ERS-1 and RADARSAT imagery. (Abstract shortened by UMI.)