western quebec and southern ontario - Department of Geology

(partially updated SOSN stations). POLARIS is a Canadian geophysical researchconsortium focused on investigation of structure and dynamics of the Earth’s lithosphereand the prediction of earthquake ground motion. The seismic instrumentation of the densePOLARIS Ontario array in Southern Ontario is complimented by a broadly spaced arraycovering the rest of the province, funded by the Federal Economic Development Initiativefor Northern Ontario (FedNor) (Eaton et al., 2005).In this thesis the data from the Canadian National Seismic Network (CNSN) andfrom a few seismic networks in the Unites States are added to the data fromSOSN/POLARIS stations. Figure 3.1 shows the distribution of the POLARIS stations, theFedNor stations, the CNSN stations, and the US seismic stations in the study area.Seismometers broad-band and short-period have been used at all stations. The CNSNstations are equipped with both types with corresponding sample rates of 40 samples persecond (sps) and 100 sps. POLARIS and FedNor have broad-band stations with samplerate of 100 sps. The older SOSN stations have short-period instruments with sample rateof 100 sps. The US stations contain mixed broad-band and short-period stations withsample rates of 50 sps and 100 sps.For the period between 1992 and 2010, 145 different stations recorded 53earthquakes with magnitude (m N ) larger than 3.5 (Appendix C).25