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MAJOR OREGON EARTHQUAKES: 1930 - 2004
Moon - Sun Finance
Appendix for the paper 9/56
year Cycles: Earthquakes & Volcanoes.
The Pacific Northwest
Seismograph Network (PNSN) listed 54 major earthquakes
(mag =>4.0) for Oregon since 1930, of which 41 occurred in 11 months beginning
March 25 of those years in Table A this appendix (highly
significant at p < .001). However, this is heavily biased in favour of only
two years - 1968 and 1993 - which accounted for a combined 32 events. Thus the
finding finding could be spurious and all events with a magnitude =>4.50
were considered (see below).
DATE-(UTC)-TIME
LAT(N) LON(W) DEP MAG QUAL COMMENTS
yy/mm/dd hh:mm:ss deg. deg.
km Ml
1873/11/23 05:05:00 42.79N 124.50W 0.0 6.3 67.2
km SSW of Coos Bay, OR
1877/10/12 17:00:00 45.50N 122.50W 0.0 5.4 10.2
km ESE of Portland, OR
1930/07/19 02:38:00 45.00N 123.19W
0.0 5.0 14.5 km WNW of Salem, OR
1941/12/29 18:37:00 45.53N 122.62W 0.0
5.0 0.0 km S of Portland, OR
1953/12/16 04:32:12 45.50N 122.69W 0.0 5.0
7.4 km WSW of Portland, OR
1957/11/17 06:00:29 45.29N 123.80W 0.0 5.0 17.7 km S of Tillamook, OR
1960/11/08 11:36:23 45.04N 125.38W 0.0 5.0 114.9 km WNW
of Newport, OR
1961/08/19 04:56:24 44.70N 122.50W 33.0 4.1 50.2 km ESE
of Salem, OR
1961/11/07 01:29:08 45.70N 122.86W 0.0 4.7 26.5
km NW of Portland, OR
1962/11/06 03:36:43 45.60N 122.59W 18.0 5.5 8.3
km NNE of Portland, OR
1963/03/07 23:53:27 44.84N 123.41W 47.0 4.6 32.6 km WSW
of Salem, OR
1964/10/01 12:31:24 45.70N 122.80W 0.0 4.1 23.1
km NW of Portland, OR
1965/08/19 21:02:15 44.59N 118.40W 33.0 4.4 48.4 km ENE
of John Day, OR
1965/10/30 19:15:57 42.09N 121.80W 25.0 4.0 14.0
km S of Klamath Falls, OR
1965/11/07 16:41:47 44.90N 117.00W 5.0 4.3 67.3
km ENE of Baker, OR
1966/12/30 03:51:40 44.90N 117.00W 10.0 4.2 67.3 km ENE of Baker, OR
1968/05/28 00:08:48 42.25N 119.66W 21.0
4.4 19.4 km ENE of Adel, OR
1968/05/28 00:51:03 42.25N 119.76W 33.0 4.1 12.5
km NE of Adel, OR
1968/05/28 12:55:42 42.25N 119.80W 34.0 4.4 9.3
km NE of Adel, OR
1968/05/30 00:35:58 42.33N 119.84W 22.0 5.1 15.7 km NNE
of Adel, OR
1968/05/31 03:06:38 42.09N 119.77W 33.0 4.1 14.6
km SE of Adel, OR
1968/06/03 13:27:39 42.25N 119.80W 20.0 5.0 9.9
km NE of Adel, OR
1968/06/04 02:34:14 42.24N 119.87W 25.0 4.6 5.6 km
NNE of Adel, OR
1968/06/04 02:38:29 42.31N 119.78W 25.0 4.0 16.2 km NNE
of Adel, OR
1968/06/04 03:35:49 42.31N 119.75W 33.0 4.1 18.0
km NE of Adel, OR
1968/06/04 05:52:32 42.28N 119.81W 34.0 4.0 12.2 km NNE
of Adel, OR
1968/06/04 06:22:17 42.20N 119.83W 26.0 4.4 5.2
km E of Adel, OR
1968/06/04 10:58:22 42.25N 119.76W 25.0 4.2 12.6
km NE of Adel, OR
1968/06/05 04:51:56 42.22N 119.98W 25.0 4.6 9.1 km
WNW of Adel, OR
1968/06/05 05:12:35 42.29N 119.76W 33.0 4.4 15.6
km NE of Adel, OR
1968/06/05 07:37:45 42.25N 119.91W 33.0 4.0 6.7 km
NNW of Adel, OR
1968/06/05 08:20:38 42.29N 119.83W 33.0 4.0 12.0 km NNE
of Adel, OR
1968/06/12 01:46:21 42.13N 119.79W 8.0 4.3 10.9
km SE of Adel, OR
1968/06/21 20:33:27 42.20N 119.65W 23.0 4.3 20.1
km E of Adel, OR
1968/06/22 09:39:52 42.18N 119.72W 0.0 4.3 14.3
km E of Adel, OR
1968/06/24 11:03:17 42.29N 119.83W 33.0 4.2 11.7 km NNE
of Adel, OR
1976/04/13 00:47:14 45.07N 120.85W 15.0 4.6 DD
FELT 20.6 km ESE of Maupin, OR
1976/04/17 02:11:44 45.15N 120.84W 15.0 4.0 DD
18.4 km E of Maupin, OR
1993/03/25 13:34:35 45.03N 122.60W 20.6 5.6 CB FELT 23.0 km ESE of Woodburn, OR
1993/09/21 03:28:55 42.31N 122.02W 10.3 5.9 AD
FELT 22.7 km WNW of Klamath Falls, OR
1993/09/21 05:45:35 42.35N 122.05W 10.3 6.0 AD
FELT 23.6 km ESE of Mt McLoughlin, OR
1993/09/21 06:14:43 42.38N 122.05W 0.0 4.3
AD 22.7 km ESE of Mt McLoughlin, OR
1993/09/23 06:21:10 42.30N 122.05W 7.2 4.1
BB 23.9 km WNW of Klamath Falls, OR
1993/12/04 22:15:19 42.29N 122.00W 6.5 5.1 AB
FELT 20.2 km WNW of Klamath Falls, OR
1993/12/25 12:33:29 42.28N 121.94W 0.1 4.0 BC
FELT 15.2 km WNW of Klamath Falls, OR
1993/12/31 18:08:44 42.28N 121.93W 0.0 4.1 BC
FELT 14.4 km WNW of Klamath Falls, OR
1994/01/07 09:39:37 42.27N 121.92W
1.6 4.0 BC 12.6 km WNW of Klamath Falls, OR
1994/01/09 19:03:13 42.26N 121.92W 2.8 4.3
AC 12.3 km WNW of Klamath Falls, OR
1994/01/19 22:27:31 42.28N 121.94W 1.0 4.3
AC 15.4 km WNW of Klamath Falls, OR
2000/01/30 19:10:23 45.19N 120.12W 0.0 4.1 CC FELT 6.5 km SE of Condon, OR
2002/05/15 17:54:48 42.23N 121.90W 8.1 4.3 BB
FELT 10.0 km W of Klamath Falls, OR
2002/06/29 14:36:04 45.33N 121.68W 6.2 4.5 BB
FELT 4.5 km S of Mt Hood, OR
2004/06/30 12:21:45 42.07N 120.23W 10.9
4.4 BB FELT 15.4 km SE of Lakeview, OR
2004/07/12 16:45:00 44.33N 124.48W 29.2 4.9 BD
FELT 48.4 km SW of Newport, OR
2004/07/22 20:26:26 42.09N 120.24W 1.1 4.3 AC
FELT 14.3 km SE of Lakeview, OR
2004/08/19 06:06:03 44.66N 124.30W 27.9 4.7 BD
FELT 19.9 km W of Newport, OR
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Table A 9/56
YEAR GRID & MAJOR OREGON QUAKES: 1930-2004 (mag 4.0)
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1937 |
1946 |
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1930 |
1939 |
1948 |
1957 |
1966 |
1975 |
1984 |
1993
*11 |
2002
*** |
1968
*21 |
1977 |
1986 |
1995 |
2004
**** |
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The 56 year sequences in
the table are each separated by an interval of 9 years.
Years in bold contained the
biggest Oregon earthquakes in the
in 11 months beginning
March 25 of those years in the table.
Source of Raw Data: PNSN
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