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- January 19, 1995
-
- Weekly Earthquake Report for Southern California
- ------------------------------------------------
- January 12 - 18, 1995
-
- Prepared by: Kate Hutton, Seismological Laboratory
- (kate@bombay.gps.caltech.edu)
- Lucy Jones, U.S. Geological Survey
- California Institute of Technology
-
- For further information, please contact the authors or the Caltech
- Public Relations Office at 818-395-6326. For daily updates, call
- our Earthquake Information Hotline: 818-395-6977.
- --------------------------------
- This week's Report covers the time period from midnight Thursday
- morning, January 12, Pacific Standard Time, to midnight
- Wednesday night, January 18, 1995, Pacific Standard Time. We
- recorded 239 earthquakes of M1.0 or larger during the 7-day period
- covered.
- It was a relatively quiet week, with the seismicity
- running about twice what it was before the Landers and Northridge
- sequences. There was a M3.1 Landers aftershock last Thursday
- afternoon north of Yucca Valley, which was felt, followed later in
- the afternoon by a M2.9 in the Carpinteria area, which was also felt.
- Then, on Sunday afternoon, there was another Landers aftershock,
- M3.2, near Barstow. On Sunday evening, there was a M3.1 offshore
- of the Pt. Arguello area. Early next morning, there was a M3.0
- near San Fernando, which the local residents apparently managed to
- sleep though. The Barstow M3.2 was the largest.
- The largest quake (in our area, that is!) on the first
- anniversary of the Northridge quake was M2.5, and it was a Landers
- aftershock. For those who are curious, there were 11,101 Northridge
- events recorded during the first year of the sequence.
- The table lists the quakes this week that were M2.0 or
- larger in the central part of the coverage area. Times are local
- times; if you want Greenwich Mean Time, add 7 hrs to the Pacific
- Daylight Time or 8 hrs to the Pacific Standard Time listed.
-
- Table 1
- -------
- Date Time N Lat. W Long. Mag
- -------------------------------------------------------------
- 1/12 8:47 am 34 16.9 118 32.8 2.1 3 mi. NNW of Northridge
- 1/12 11:17 am 33 20.1 116 14.5 2.1 9 mi. NE of Borrego Springs
- 1/12 2:06 pm 34 46.6 116 34.9 2.0 26 mi. ESE of Barstow
- 1/12 2:50 pm 34 0.5 116 19.3 3.1 10 mi. SE of Yucca Valley
- FELT
- 1/12 5:16 pm 34 15.4 119 30.8 2.9 9 mi. S of Carpinteria
- FELT
- 1/12 6:01 pm 34 20.2 116 55.5 2.4 6 mi. N of town of Big Bear
- 1/12 7:00 pm 35 59.6 117 55.1 2.3 3 mi. SSE of Coso Junction
- 1/13 3:49 am 33 59.2 118 27.2 2.2 1 mi. NNW of Marina del Rey
- 1/13 7:09 am 34 23.6 119 18.2 2.0 4 mi. SW of Ojai
- 1/13 8:32 am 33 29.4 116 30.5 2.2 10 mi. ESE of Anza
- 1/13 2:25 pm 35 3.0 117 23.5 2.3 23 mi. WNW of Barstow
- 1/13 5:41 pm 34 9.9 118 41.2 2.3 5 mi. WSW of Canoga Park
- 1/14 12:17 am 34 47.4 116 17.6 2.0 35 mi. SSW of Baker
- 1/14 12:53 am 35 51.4 117 44.0 2.2 16 mi. NNW of Ridgecrest
- 1/14 2:47 am 34 1.5 116 19.6 2.4 9 mi. SE of Yucca Valley
- 1/14 9:38 am 33 52.4 118 11.8 2.0 Lakewood/Compton area, near
- the I710/91 interchange
- 1/14 10:42 am 33 52.2 118 10.0 2.5 "
- 1/14 4:47 pm 33 20.4 117 16.8 2.7 11 mi. NNE of Oceanside
- 1/14 6:02 pm 36 3.7 120 49.6 2.6 24 mi. WNW of Parkfield
- 1/15 4:08 am 34 22.4 118 42.0 2.0 6 mi. N of Simi Valley
- 1/15 8:15 am 33 52.5 118 10.3 2.4 Near the I710/91 interchange
- 1/15 9:50 am 34 57.6 116 56.6 2.0 7 mi. NE of Barstow
- 1/15 9:59 am 34 58.7 116 56.6 2.0 "
- 1/15 1:56 pm 34 59.2 116 56.6 3.2 "
- 1/15 2:06 pm 34 59.0 116 56.6 2.3 "
- 1/15 4:18 pm 33 49.5 116 24.5 2.3 7 mi. N of Palm Desert
- 1/15 8:54 pm 34 36.0 120 53.2 3.1 13 mi. W of Pt. Arguello
- 1/16 2:52 am 35 16.8 118 34.7 2.2 12 mi. NW of Tehachapi
- 1/16 4:15 am 34 18.2 118 27.1 3.0 1 mi. NW of San Fernando
- 1/16 4:55 am 34 17.7 118 27.3 2.1 "
- 1/16 1:47 pm 34 47.4 118 55.3 2.0 2 mi. SSE of Frazier Park
- 1/16 4:15 pm 36 6.7 117 50.8 2.2 5 mi. ESE of Haiwee Reservoir
- 1/16 7:56 pm 34 22.1 116 28.0 2.3 17 mi. N of Yucca Valley
- 1/16 8:34 pm 34 1.1 116 56.4 2.3 6 mi. NNE of Beaumont
- 1/16 9:47 pm 34 22.3 116 27.9 2.2 17 mi. N of Yucca Valley
- 1/16 11:39 pm 34 22.2 116 27.6 2.2 "
- 1/17 7:25 am 34 0.8 116 19.3 2.1 10 mi. SE of Yucca Valley
- 1/17 7:36 pm 34 18.3 116 27.0 2.1 12 mi. N of Yucca Valley
- 1/17 11:13 pm 34 22.4 116 28.0 2.5 17 mi. N of Yucca Valley
- 1/18 3:34 am 34 0.6 116 19.2 2.3 10 mi. SE of Yucca Valley
- 1/18 4:49 am 34 34.3 116 34.2 2.0 23 mi. ENE of Lucerne Valley
- 1/18 8:57 am 34 24.5 116 28.2 2.7 20 mi. N of Yucca Valley
- 1/18 3:07 pm 34 34.1 120 58.0 2.5 18 mi. W of Pt. Arguello
- 1/18 10:10 pm 34 14.6 117 32.2 2.1 7 mi. ESE of Mt. Baldy
- 1/18 10:42 pm 34 0.5 116 19.3 2.4 10 mi. SE of Yucca Valley
- -------------------------------------------------------------
-
- Figure 1. A map of southern California showing the earthquakes
- recorded during the past week by the Caltech/USGS Seismic
- Network. Major faults are marked, as well as the metropolitan
- areas of Los Angeles (L.A.), Palm Springs (P.S.), San Diego
- (S.D.), and Santa Barbara (S.B.). The circles denote the
- earthquakes, the size of the circle indicating the magnitude.
-
-