This electronic supplement contains Table S1 that summarizes the origin parameters of all earthquakes in the McAdam swarms. These parameters include origin time, epicenter, depth, magnitude, and magnitude type. This supplement also contains Figures S1–S3 that show examples of seismograms recorded by the temporary stations deployed in McAdam in 2016, as discussed in the main article for three earthquakes covering a range of magnitudes.
Table S1. Summary of McAdam earthquakes.
Figure S1. Seismograms recorded by the temporary stations in McAdam for a magnitude (MN) 1.4 earthquake that occurred on 16 February 2016 at 00:31 UTC. This was one of the largest earthquakes recorded by the temporary array. Data are unfiltered. For each station, the three components are plotted at the correct relative scale. The vertical line and 0 indicate the origin time of the earthquake. Note that data from strong-motion instruments are not used to determine the location; (a) MCA1, (b) MCA2, (c) MCA3, (d) MCA5, and (e) MCA5 strong motion.
Figure S2. Seismograms recorded by the temporary stations in McAdam for a magnitude (ML) 0.6 earthquake that occurred on 16 February 2016 at 22:32 UTC. The figure format is the same as Figure S1. (a) MCA1, (b) MCA2, (c) MCA3, (d) MCA5, and (e) MCA5 strong motion.
Figure S3. Seismograms recorded by the temporary stations in McAdam for a magnitude (ML) −0.2 earthquake that occurred on 17 February 2016 at 22:25 UTC. The figure format is the same as Figure S1. Note that data from station MCA3 were not used to determine the source parameters of this earthquake. (a) MCA1, (b) MCA2, (c) MCA3, (d) MCA5, and (e) MCA5 strong motion.
All parameters in Table S1 are from the Canadian National Earthquake Database available at http://www.earthquakescanada.nrcan.gc.ca/stndon/NEDB-BNDS/index-en.php (last accessed February 2017).
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