The 17 May 2013 M 4.6 Ladysmith, Quebec, Earthquake

Research Article| January 28, 2015 The 17 May 2013 M 4.6 Ladysmith, Quebec, Earthquake Allison L. Bent; Allison L. Bent aCanadian Hazards Information Service, Geological Survey of Canada, Natural Resources Canada, 7 Observatory Crescent, Ottawa, Ontario, Canada K1A 0Y3abent@nrcan.gc.ca Search for other works by this author on: GSW Google Scholar Maurice Lamontagne; Maurice Lamontagne bPublic Safety Geoscience Program, Geological Survey of Canada, Natural Resources Canada, 615 Booth Street, Ottawa, Ontario, Canada K1A 0E9 Search for other works by this author on: GSW Google Scholar Veronika Peci; Veronika Peci aCanadian Hazards Information Service, Geological Survey of Canada, Natural Resources Canada, 7 Observatory Crescent, Ottawa, Ontario, Canada K1A 0Y3abent@nrcan.gc.ca Search for other works by this author on: GSW Google Scholar Stephen Halchuk; Stephen Halchuk aCanadian Hazards Information Service, Geological Survey of Canada, Natural Resources Canada, 7 Observatory Crescent, Ottawa, Ontario, Canada K1A 0Y3abent@nrcan.gc.ca Search for other works by this author on: GSW Google Scholar Gregory R. Brooks; Gregory R. Brooks bPublic Safety Geoscience Program, Geological Survey of Canada, Natural Resources Canada, 615 Booth Street, Ottawa, Ontario, Canada K1A 0E9 Search for other works by this author on: GSW Google Scholar Dariush Motazedian; Dariush Motazedian cDepartment of Earth Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada K1S 5B6 Search for other works by this author on: GSW Google Scholar James A. Hunter; James A. Hunter bPublic Safety Geoscience Program, Geological Survey of Canada, Natural Resources Canada, 615 Booth Street, Ottawa, Ontario, Canada K1A 0E9 Search for other works by this author on: GSW Google Scholar John Adams; John Adams aCanadian Hazards Information Service, Geological Survey of Canada, Natural Resources Canada, 7 Observatory Crescent, Ottawa, Ontario, Canada K1A 0Y3abent@nrcan.gc.ca Search for other works by this author on: GSW Google Scholar Catherine Woodgold; Catherine Woodgold aCanadian Hazards Information Service, Geological Survey of Canada, Natural Resources Canada, 7 Observatory Crescent, Ottawa, Ontario, Canada K1A 0Y3abent@nrcan.gc.ca Search for other works by this author on: GSW Google Scholar Janet Drysdale; Janet Drysdale aCanadian Hazards Information Service, Geological Survey of Canada, Natural Resources Canada, 7 Observatory Crescent, Ottawa, Ontario, Canada K1A 0Y3abent@nrcan.gc.ca Search for other works by this author on: GSW Google Scholar Sylvia Hayek; Sylvia Hayek aCanadian Hazards Information Service, Geological Survey of Canada, Natural Resources Canada, 7 Observatory Crescent, Ottawa, Ontario, Canada K1A 0Y3abent@nrcan.gc.ca Search for other works by this author on: GSW Google Scholar Wayne N. Edwards Wayne N. Edwards aCanadian Hazards Information Service, Geological Survey of Canada, Natural Resources Canada, 7 Observatory Crescent, Ottawa, Ontario, Canada K1A 0Y3abent@nrcan.gc.ca Search for other works by this author on: GSW Google Scholar Seismological Research Letters (2015) 86 (2A): 460–476. https://doi.org/10.1785/0220140138 Article history first online: 14 Jul 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Allison L. Bent, Maurice Lamontagne, Veronika Peci, Stephen Halchuk, Gregory R. Brooks, Dariush Motazedian, James A. Hunter, John Adams, Catherine Woodgold, Janet Drysdale, Sylvia Hayek, Wayne N. Edwards; The 17 May 2013 M 4.6 Ladysmith, Quebec, Earthquake. Seismological Research Letters 2015;; 86 (2A): 460–476. doi: https://doi.org/10.1785/0220140138 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySeismological Research Letters Search Advanced Search ABSTRACT Although moderate in size (MN 5.2, M 4.6), the earthquake that occurred near Ladysmith, Quebec, on 17 May 2013 was one of the best‐recorded earthquakes to have occurred in eastern Canada in recent years due to the fortuitous deployment of U.S. Transportable Array stations in a region that was already well covered by the Canadian National Seismograph Network. This data set allowed us to study the earthquake and its aftershocks in better detail than we could have done in the past. Moment tensor and first‐motion focal mechanisms suggest that it was a typical western Quebec earthquake resulting from thrust faulting on a northwest‐striking plane. Several methods were used to determine the depth, all indicating a depth of 12–15 km. The aftershock sequence, which included a magnitude 4.1 (MN) earthquake occurring 10 min after the mainshock, was relatively rich in MN>3.0 events and contrasts sharply with that of the 2010 Val‐des‐Bois earthquake (also in western Quebec). Strong‐motion data from the Ladysmith earthquake contributed to an ongoing study to model soft soil amplification and basin effects. The earthquake was felt to distances in excess of 500 km, and more than 4300 people filled out an online "Did You Feel It?" survey, providing a detailed picture of macroseismic effects. Visits to Ladysmith and nearby communities found evidence for minor damage confined to the epicentral area. It is difficult to correlate the Ladysmith sequence with any known faults in the region, but it is noted that some local‐scale lineaments in the epicentral area trend subparallel to the nodal planes of the focal mechanism. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.