Identifying probable fault planes in the stable continental regions of Canada ...

• Main Author: Bent, Allison
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Arctic; Canada
• Online Access: https://dx.doi.org/10.57757/iugg23-2442; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018310

<!--!introduction!--> Seismic hazard assessment has advanced beyond relying solely on magnitude recurrence rates to incorporating additional parameters, such as faults and deformation rates. In the stable craton of Canada, active faults have been difficult to identify as there is only one earthquake with a known surface rupture (northern Quebec, 1989). Additional sources of information, such as GNSS and INSAR, have thus far been of limited value for hazard assessment in this region because of poor spatial coverage and the relatively modest sizes of recent earthquakes. Nevertheless, the region comprises several active seismic zones with well recorded earthquakes and large earthquakes have occurred historically. Building on an initial study of the Western Quebec Seismic Zone, statistical analyses of focal mechanisms focusing on modal values (e.g. Salvado-Gálvez et al. 2020) in all seismically active regions of southeastern Canada and the eastern Canadian Arctic are applied to determine probable fault ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...