California

[cbassn]

 

[thirtyhz]

Not that I plug other sites, especially GLP....

But there are a few posters who are REALLY playing up a major SoCal quake within the next two weeks.  Dreams, premonitions, and eq postings are up in at least 3 different threads.

The depopulation thing has popped up again.

Isn't this something we hinted at with the Haiti EQ, Mizar?

Should go visit EQ Mary and see what she has to say....

[sparrow]

you hit the nail on the head 30.  I've been keeping an eye on GLP...I know they are crazy, but there are a few interesting threads.

[shy]

USGS:
Magnitude 4.1
Date-Time Monday, February 15, 2010 at 00:07:09 UTC
Sunday, February 14, 2010 at 04:07:09 PM at epicenter
 
Location 36.076°N, 117.862°W
Depth 2.5 km (1.6 miles)
Region CENTRAL CALIFORNIA
Distances 8 km (5 miles) ENE (66°) from Coso Junction, CA
24 km (15 miles) SSE (149°) from Olancha, CA
31 km (19 miles) SSE (152°) from Cartago, CA
53 km (33 miles) NNW (342°) from Ridgecrest, CA
227 km (141 miles) N (9°) from Los Angeles Civic Center, CA
Location Uncertainty horizontal +/- 0.5 km (0.3 miles); depth +/- 0.8 km (0.5 miles)

The following 3+ magnitudes all w/i last 24 hr:
 
MAP 3.0  2010/02/14 21:40:41 32.267 -116.587 1.3   34 km ( 21 mi) S of Tecate, Mexico
MAP 4.5  2010/02/14 21:35:47 32.275 -116.588 0.9   33 km ( 21 mi) S of Tecate, Mexico
MAP 3.3  2010/02/14 18:43:37 43.016 -126.517 10.0  167 km (104 mi) W of Port Orford, OR
MAP 3.3  2010/02/14 16:26:10 58.525 -156.631 195.9   18 km ( 11 mi) S of King Salmon, AK
MAP 3.0  2010/02/14 06:58:26 33.232 -115.698 4.0   9 km ( 6 mi) NW of Obsidian Butte, CA
MAP 3.1  2010/02/14 03:33:30 51.971 -166.432 27.2  197 km (122 mi) ESE of Nikolski, AK
MAP 3.0  2010/02/14 00:37:57 36.114 -117.721 3.1   21 km ( 13 mi) SW of Darwin, CA
MAP 3.1  2010/02/14 00:01:13 32.697 -116.016 7.4   5 km ( 3 mi) SSW of Ocotillo, CA

--------------------------------------------------------------------------------

From Frank Condon of Sygyzy:
http://camel.he.net/~syzygyq/new_site//index.php?option=com_smf&Itemid=35&topic=257133.new#new
MAP 4.1  2010/02/13 21:39:06 34.004 -117.180 8.9   6 km ( 4 mi) S of Redlands, CA

An earlier reported shear stress increase lead up to the step over of stress coming from the San Jacinto fault. Near Tecate,. there was a preliminary magnitude 4.5 earthquake epicentered within the California / Mexico border region southeast of San Diego, CA. There was also a separate M4.1 earthquake epicentered near Cactus Peak within the Coso Volcanic Center located in Eastern Central California  immediately north of the Garlock Fault Zone. Two new magnitude 4 or greater earthquakes have now occurred during this latest  Solar-Lunar-Tidal Stress Advisory, which began just prior to the latest New Moon's arrival less than 24 hours ago.

[shy]

These are USGS 2.5+ magnitude quakes w/i 3.5 hr of latest 4.1 quake above. (Oklahoma included just for interest.) 
 
MAP 2.8 2010/02/15 03:32:25    35.570 -97.275  5.0   OKLAHOMA
MAP 3.3 2010/02/15 03:07:54    36.705 -121.335  3.1   CENTRAL CALIFORNIA
MAP 2.5 2010/02/15 03:04:59    38.374 -122.588  5.7   NORTHERN CALIFORNIA
MAP 2.6 2010/02/15 00:10:55    36.062 -117.870  2.1   CENTRAL CALIFORNIA  (aftershock)

[shy]

The following are 3+ magnitudes in < 2hr of Chilie's 3.3 magnitude:

MAP 3.6  2010/02/27 08:08:50 62.755 -148.809 0.1   71 km ( 44 mi) S of Cantwell, AK
MAP 3.4  2010/02/27 07:47:33 33.489 -116.822 15.6   15 km ( 10 mi) NNE of Palomar Observatory, CA
MAP 3.4  2010/02/27 07:21:54 36.072 -117.885 2.9   6 km ( 4 mi) ENE of Coso Junction, CA
MAP 3.8  2010/02/27 07:10:43 36.360 -117.943 7.8   9 km ( 5 mi) ENE of Cartago, CA
MAP 4.1  2010/02/27 06:56:03 36.060 -117.886 2.1   6 km ( 4 mi) ENE of Coso Junction, CA

edited to add:  USGS also lists 20 quakes of 1+ magnitude on their Calif/Nev map w/i this same time period

[shy]

Frank Condon of Syzygy:

"The massive earthquake in Chile has also caused increased crustal instability in both Central and Southern California."
http://camel.he.net/~syzygyq/new_site//index.php?option=com_smf&Itemid=35&topic=257213.new#new

[cobalt]

San Bernadino County is considered to be at risk for major damage from a large earthquake.  There are a lot of old buildings there.

http://www.sbsun.com/realestatenews/ci_14295613

[slim2none]

I would agree with San Bernardino, and other southern areas come to mind - 


http://www.johnmartin.com/earthquakes/eqsafs/safs_621.htm
JULY 21, 1952 (M=7.7)
[c6, p163]


The Kern County or Arvin-Tehachapi earthquake of July 21, 1952, ruptured the White Wolf fault in the largest event to strike California since 1906. The earthquake led to 12 fatalities, and 2 more occurred during a large aftershock on August 22. Field studies of the earthquake (Oakeshott, 1955) describe the geologic, seismologic, and engineering aspects of the earthquake. From a tectonic standpoint, this event is notable for its conjugate relation to the San Andreas fault. Left-lateral slip with a significant reverse-slip component occurred on the northeast-striking, south-dipping fault plane.

*************
Our family lived this quake - mom at home with three kids, me as a mere babe. 



 

[cbassn]

http://san-clemente.org/cameras/hqcamera.aspx


Live Cam of Beach at San Clemete, CA

[cbassn]

Fox News Ticker is saying "Landslide in CA"     

[shy]

From Frank Condon of Syzygy @  http://camel.he.net/~syzygyq/new_site//index.php?option=com_smf&Itemid=35&topic=257218.new#new

"The Coso Volcanic Center is the location that has become increasingly seismically active since the M8.8 earthquake in South America. This is where geothermal energy related to a magma chamber is currently being tapped for power generation"

. . . . . . . . . .

From http://en.wikipedia.org/wiki/Coso_Volcanic_Field#Geothermal

The Coso Volcanic Field is located in southeastern California, at the western edge of the Basin and Range geologic province. Initiation of volcanism at Coso preceded the onset of Basin and Range crustal extension there, as expressed by normal faulting. The earlier of the two principal periods of volcanism began with the emplacement of basalt flows over a surface of little relief. Then, during the ensuing period of approximately 1.5 million years, eruptive activity included chemically more evolved rocks erupted upon a faulted terrain of substantial relief. Following a 1.5-million-year hiatus with few eruptions, a bimodal volcanic field of basalt lava flows and rhyolite lava domes and flows developed on Basin and Range terrain of essentially the same form as today's landscape. Many of the young basalt flows are intercanyon, occupying parts of the present-day drainage system. . . .

The Coso Volcanic Field is also well known as a geothermal area. Fumaroles are present along faults bounding the rhyolite-capped horst and locally within the rhyolite field. A multi-disciplinary program of geothermal assessment carried out in the 1970s defined a potential resource of 650 megawatts electric with a nominal life span of 30 years. Judged by the youthfulness of the rhyolite lavas and by a zone of low seismic velocity crust roughly beneath the rhyolite, a magma body may be the source of thermal energy for the geothermal system. . . .

The Coso Volcanic Field is one of the most seismically active regions in the United States, producing dozens of tremors in the M1 and M2 range each week. Tremors in the M3 range occur at a rate of 2-6 per month and M4 quakes occur two-three times each year. Recent activity in the M5 range happened in 1996 and 1998 when tremors of M5.3, M5.1, M5.2, and M5.0 occurred with a day of each other. These tremors were actually recorded along the eastern side of the Coso Volcanic Field, 15 miles (24 km). September 30, 2009 to October 6, 2009 there have been 429 earthquakes ranging from 0.1 up to a 5.2. Some days have activity just about one every minute. On October 2, 2009 there were three earthquakes (5.2, 4.7, and a 4.9) all with in one hour of each other

Earthquake swarms are common in the Coso area, often producing hundreds of tremors over periods of time as short as a few days. This kind of brisk and robust seismic activity is common in volcanic areas, such as Long Valley Caldera located near Mammoth Lakes, and Yellowstone Caldera at Yellowstone. The Coso Volcanic Field shows stunning examples of volcanic activity, probably last active 30-40,000 years ago, but ash emission and small cone building episodes may be Holocene (>10,000 years) in age.

[thirtyhz]

Can't find any news on the Cali slides, c....
If you find it again, please give us a link.

shy, thanks for the Frank Condon post!

The Chilean quake (and aftershocks) is shaking the bejeeziz out of the Pac Rim and adjacent plates.  The image below was just updated on the usgs site.  Looks like a Christmas Tree. Check out Japan...the US West Coast...even the Mid Atlantic Ridge.

I'm surprized at the geothermal activity in California though.....this is not good news.

[shy]

 
MAP 4.0  2010/03/09 04:18:21 32.989 -116.365 6.0 23 km ( 14 mi) ESE of Julian, CA

[shy]

MAP 4.0  2010/03/09 04:18:21 32.989 -116.365 6.0 23 km ( 14 mi) ESE of Julian, CA

Frank Concon of Syzygy staes:

"Based upon the analysis, this earthquake appears to have been associated with a step-over of stress coming from the SanJacinto Fault Zone. There is also an increase in Normal, or compressional stress which preceded the earthquake by a few hours beginning during the time of a M2.5 micro-quake epicentered along the Glen Helen Fault.near Devore, CA."

http://camel.he.net/~syzygyq/new_site//index.php?option=com_smf&Itemid=35&topic=257295.new#new