Electronic Supplement to
Semiannual Earthquake Periodicity

by Patrick H. McClellan

Table S11. Solar Semiannual (Ssa) Phase of M ≥ 6.3 Earthquakes along the Queen Charlotte–Fairweather Fault System and Explorer Ridge from 1 January 1900 to 1 April 2014

Date Time, UTC (hh:mm:ss.sss) Latitude (°) Longitude (°) Magnitude* Phase
22 August 1949 04:01:19.000 53.69 −133.1 8 0.827
10 July 1958 06:15:58.000 58.48 −136.28 7.8 0.596
28 October 2012 03:04:08.820 52.79 −132.1 7.8 0.197
30 July 1972 21:45:13.000 56.7 −136.1 7.6 0.710
5 January 2013 08:58:19.330 55.39 −134.65 7.5 0.588
24 October 1927 15:59:56.000 57.44 −136.37 7.1 0.169
26 May 1929 22:40:02.000 51.24 −130.56 7 0.359
6 November 1910 20:29:00.000 53 −135 6.8 0.243
24 June 1970 13:09:12.000 51.78 −130.94 6.8 0.512
28 June 2004 09:49:47.000 54.8 −134.54 6.8 0.537
1 July 1973 13:33:32.000 57.8 −137.42 6.7 0.551
20 December 1976 20:33:11.000 48.79 −129.24 6.7 0.495
17 December 1980 16:22:00.000 49.44 −129.74 6.7 0.477
6 April 1992 13:54:43.000 50.5 −130.34 6.7 0.092
2 November 2004 10:02:11.000 49.17 −128.94 6.6 0.226
5 January 2008 11:01:06.110 51.25 −130.75 6.6 0.586
17 November 2009 15:30:47.440 52.12 −131.4 6.6 0.308
21 December 1956 08:58:59.000 51.39 −130.72 6.5 0.497
4 July 1960 04:28:37.000 51.81 −131.26 6.5 0.566
23 July 1972 19:13:06.000 50.11 −129.44 6.4 0.672
11 June 1978 14:55:28.000 49.22 −129.51 6.3 0.443

* Magnitude type as given in ANSS catalog.

† Phase is the fraction of the cycle elapsed between bounding equinoxes.

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