Felt at my location in Northern CA, details follow
5.7 11km WNW of Greenville, California 2013-05-23 20:47:07-07:00
About 40 miles away from me.
Map: http://earthquake.usgs.gov/earthquakes/eventpage/nc71996911#summary
Whole cluster of quakes near Lake Almanor, odd.
12 quakes in that area last hour ranging from 2.5 to 5.7. 44 total if including lower than 2.5 magnitude Wonder if this is related to Mt. Lassen magma pool? Mt. Lassen is just 30mi to NW.
49 quakes now, note distance from cluster to Mt. Lassen. http://earthquake.usgs.gov/earthquakes/map/
- 3.0 8km WNW of Greenville, California 2013-05-23 22:46:56-07:00 0.0 km deep
- 2.0 7km NW of Greenville, California 2013-05-23 22:43:37-07:00 3.1 km deep
- 2.9 8km WNW of Greenville, California 2013-05-23 22:39:43-07:00 0.0 km deep
- 1.9 10km NW of Greenville, California 2013-05-23 22:37:21-07:00 9.7 km deep
- 2.0 8km WNW of Greenville, California 2013-05-23 22:28:26-07:00 8.8 km deep
- 1.9 11km WNW of Greenville, California 2013-05-23 22:27:16-07:00 2.5 km deep
- 3.1 13km SSW of Westwood, California 2013-05-23 22:24:42-07:00 0.0 km deep
- 2.3 10km WNW of Greenville, California 2013-05-23 22:23:26-07:00 1.3 km deep
- 2.4 8km WNW of Greenville, California 2013-05-23 22:19:34-07:00 0.9 km deep
- 2.9 9km NW of Greenville, California 2013-05-23 22:18:23-07:00 0.0 km deep
- 2.7 7km WNW of Greenville, California 2013-05-23 22:13:46-07:00 2.5 km deep
- 1.9 8km WNW of Greenville, California 2013-05-23 22:12:31-07:00 2.5 km deep
- 2.9 9km WNW of Greenville, California 2013-05-23 22:09:13-07:00 0.1 km deep
- 1.8 9km WNW of Greenville, California 2013-05-23 22:08:26-07:00 0.0 km deep
- 2.7 11km WNW of Greenville, California 2013-05-23 22:06:15-07:00 0.2 km deep
- 3.6 8km WNW of Greenville, California 2013-05-23 22:01:55-07:00 0.0 km deep
- 3.5 9km WNW of Greenville, California 2013-05-23 21:58:57-07:00 0.1 km deep
- 3.4 10km WNW of Greenville, California 2013-05-23 21:58:08-07:00 0.0 km deep
- 2.1 9km WNW of Greenville, California 2013-05-23 21:56:30-07:00 10.5 km deep
- 0.0 12km WNW of Greenville, California 2013-05-23 21:53:13-07:00 12.0 km deep
- 2.0 10km NW of Greenville, California 2013-05-23 21:52:24-07:00 7.2 km deep
- 2.2 10km WNW of Greenville, California 2013-05-23 21:49:49-07:00 0.2 km deep
- 0.0 13km WNW of Greenville, California 2013-05-23 21:45:52-07:00 4.1 km deep
- 2.8 10km NW of Greenville, California 2013-05-23 21:44:42-07:00 0.1 km deep
- 2.7 10km WNW of Greenville, California 2013-05-23 21:40:30-07:00 0.0 km deep
- 1.8 10km NW of Greenville, California 2013-05-23 21:35:03-07:00 7.0 km deep
- 2.1 9km WNW of Greenville, California 2013-05-23 21:34:22-07:00 2.5 km deep
- 2.2 11km WNW of Greenville, California 2013-05-23 21:34:00-07:00 6.2 km deep
- 2.4 11km WNW of Greenville, California 2013-05-23 21:32:56-07:00 1.3 km deep
- 1.7 9km SW of Westwood, California 2013-05-23 21:32:24-07:00 5.0 km deep
- 2.0 9km WNW of Greenville, California 2013-05-23 21:31:04-07:00 0.8 km deep
- 2.7 10km WNW of Greenville, California 2013-05-23 21:29:42-07:00 0.0 km deep
- 2.5 9km WNW of Greenville, California 2013-05-23 21:28:31-07:00 1.3 km deep
- 1.8 9km NW of Greenville, California 2013-05-23 21:27:38-07:00 0.0 km deep
- 2.6 10km WNW of Greenville, California 2013-05-23 21:25:19-07:00 0.0 km deep
- 2.0 12km SSW of Westwood, California 2013-05-23 21:24:43-07:00 1.7 km deep
- 2.3 10km NW of Greenville, California 2013-05-23 21:24:01-07:00 1.3 km deep
- 2.6 10km NW of Greenville, California 2013-05-23 21:23:40-07:00 5.1 km deep
- 0.0 11km WNW of Greenville, California 2013-05-23 21:23:06-07:00 6.9 km deep
- 2.0 10km NW of Greenville, California 2013-05-23 21:21:52-07:00 0.1 km deep
- 2.0 12km SSW of Westwood, California 2013-05-23 21:21:11-07:00 0.5 km deep
- 2.2 9km NW of Greenville, California 2013-05-23 21:18:31-07:00 1.3 km deep
- 2.2 10km NW of Greenville, California 2013-05-23 21:18:10-07:00 4.0 km deep
- 1.8 10km NW of Greenville, California 2013-05-23 21:16:32-07:00 17.6 km deep
- 2.3 10km WNW of Greenville, California 2013-05-23 21:15:15-07:00 0.2 km deep
- 2.4 13km WNW of Greenville, California 2013-05-23 21:10:24-07:00 0.7 km deep
- 2.8 10km NW of Greenville, California 2013-05-23 21:09:15-07:00 1.3 km deep
- 3.4 15km SE of Chester, California 2013-05-23 21:08:21-07:00 0.0 km deep
- 2.6 12km SSW of Westwood, California 2013-05-23 21:07:44-07:00 1.6 km deep
- 2.0 11km WNW of Greenville, California 2013-05-23 21:07:22-07:00 2.5 km deep
- 2.6 10km WNW of Greenville, California 2013-05-23 21:04:09-07:00 1.6 km deep
- 2.1 9km WNW of Greenville, California 2013-05-23 21:01:41-07:00 0.7 km deep
- 3.5 10km NW of Greenville, California 2013-05-23 20:55:30-07:00 0.0 km deep
- 2.2 9km NW of Greenville, California 2013-05-23 20:55:11-07:00 3.4 km deep
- 5.7 11km WNW of Greenville, California 2013-05-23 20:47:08-07:00 11.0 km deep
- 1.9 12km ENE of East Quincy, California 2013-05-23 04:17:24-07:00 1.5 km deep
Any wind farms nearby???
Wind turbines are large and vibrating cylindrical towers strongly coupled to the ground through a massive concrete foundation, with rotating turbine blades generating low-frequency acoustic signals noise.
The Vibrations depict show a complex spectrum, which includes both time-varying frequency peaks directly related to the blade-passing frequency, and stationary peaks associated with the pendulum modes of the heavy rotor head and tower, and to flexural as in flexing modes of the tower.
These disturbances noise/vibrations propagate via complex paths including directly through the ground or though principally through the air and then coupling diving locally into the ground.
Though weak, such vibrations may be relevant once compared to the local levels of seismic noise. Schofield (2001) found that the intense low frequency seismic disturbances from the Stateline Wind Project (Washington-Oregon, USA) were well above the local seismic background till up to distances of 18 km from the turbines. Similar distance ranges were found by Styles et al. (2005), who analysed the possible influence of a project wind park at Eskdalemuir (Scotland) in the vicinity of the UK Seismic Array. Fiori et al. (2009) studied the seismic noise generated by a wind park in proximity of to the GEO-600 interferometric antenna (Germany), and observed the signal from the turbines till at distances of about 2000m (2km = 1.24 mi).
http://www.windturbinesyndrome.com/2011/seismologists-say-wind-turbines-produce-airborne-infrasound-plus-ground-borne-vibration-up-to-6-8-miles-from-the-wind-farm-italy/
@ur momisugly Leif Svaalgard
http://meetingorganizer.copernicus.org/EGU2013/EGU2013-1405.pdf
Possible relationship between changes in IMF, M7+ earthquakes and VEI
index, during the transition between the solar minimum cycle 23 and the
rise of solar cycle 24
“…..We conclude that this research further confirms that while coming out from periods of low activity, in the long period – deep solar minima, and the simultaneous fast oscillation, in the short period and impulsive electro-magnetic activity, the recovery of the EM activity of the Sun can trigger significant geophysical events in terms of energy release as regards the magnitude or the VEI index….”
Correction with apologies. My 3:54am post should have been 602 km instead of miles. Need another cup of coffee.
More on deep earthquakes here: http://geology.about.com/od/earthquakes/a/aa_deeEQs.htm
What a great place for “denier central” to be located. Somewhere just above Humbug Valley and Greenville. Love the irony.
What’s the local geology. It looks from that first map like the lake may be the caldera of a very ancient volcano.
I think I’d be a bit twitchy if I lived in Greenville right now. Time to visits friends up north maybe.
Take care all, Hope nothing too “interesting” happens.
Magnitude 8.3
Sea of Okhotsk
2013-05-24 06:44:49+01:00
608.9 km deep
http://earthquake.usgs.gov/earthquakes/map/
lsvalgaard says:
ville says:
May 24, 2013 at 12:18 am
The moon is approaching its closest encounter with earth.
When the Japan tsunami hit, Earth was at its minimum distance to sun.
Neither has anything to do with earthquakes, e.g. here is earthquake activity with respect to the Moon: http://www.leif.org/research/Earthquakes-Perigee.png
===
There is a distinct periodic ripple in the upper two lines in that graph. Estimating 88.5/6=14.75 days
Looks decidedly lunar. Is that recognised / attributed ?
kadaka (KD Knoebel) says:
May 23, 2013 at 9:37 pm
“Solar question:
The primary memory unit remembers previous conversations here, where it was argued about a possible connection between strong solar periods and seismic events. But the actual numbers showed a negative correlation, seismic events were more likely during weak sun periods.
That was before the reconsidering of the sunspot counts and the eliminating of the modern-era Grand Solar Maximum.
Does the weak sun with strong seismic correlation still hold?”
It will depend on who you ask, I’m currently studying the orbital structure of the solar system in relation to solar activity, when looking at earths seismic activity in relation to solar activity there does appear to be a correlation with weak cycles, tho, this correlation may be linked to planetary perturbations and the configuration of the solar-system rather than a direct link to solar activity.
For example here is a plot of Jupiter, Neptune and Uranus against Sunspot area 1875-2040
http://thetempestspark.files.wordpress.com/2013/05/solar-activity-mod-1.gif
And here is a plot of Jupiter, Neptune and Uranus against Sunspot average monthly Sunspot number 1749-2040
http://thetempestspark.files.wordpress.com/2013/05/ssn-monthly-average-1749-2040-n-n1-n2.jpg
The configuration of the planetary orbits have a correlation with the timing of solar cycles, and I’ve seen a good correlation with changes in geological activity on earth and in the global temperature anomaly which may appear to be caused by solar activity but could actually be caused by the nature of the planetary orbits of our solar system.
Geomagnetic activity for May 2013
here horizontal GMF swing ~600nt
Japan Eq March 11, 2011
http://www.vukcevic.talktalk.net/Japan.gif
horizontal GMF swing ~700nt
btw
VUKCEVIC on WUWT 10th March 2011 ( 8 hours before Japan’s earthquake )
Currently geomagnetic field is getting seriously shaken
http://wattsupwiththat.com/2011/03/10/sol-is-finally-waking-up/#comment-617659
Scale on plot marks the visible cycle of lunar phase (new moon etc.) the synodic period.
88.5/6=14.75 days = synodic lunar period / 2 ; ie each time there’s E-M-Sol alignment. Presumably the minimum stress being when sun and moon are in quadrature.
And I think that has just explained a circa 14/15 day periodicity I had noted in Arctic ice area.
One which makes all the obsessions with annual ice maxima/minima detection and melting period rather variable.
It can be seem clearly in 2012 data linked form WUWT ice page.
http://nsidc.org/data/seaice_index/images/daily_images/N_timeseries.png
I had not clicked why it was a half cycle until I saw Leif’s plot.
So luni-solar tidal influence on arctic ice area and earth crust.
For example here is a plot of Jupiter, Neptune and Uranus against Sunspot area 1875-2040
http://thetempestspark.files.wordpress.com/2013/05/solar-activity-mod-1.gif
Sparks, looks interesting but you can’t “plot a planet”. How is this curve calculated? Is it linked to an article ?
crosspatch says:
May 23, 2013 at 10:20 pm
USGS had totally ruined their earthquake pages. When you went to the information on an event, there used to be a “historical seismisicty” map but now once you figure out how to navigate to the event summary, that map is no longer available.
USGS new earthquake map sucks.
========
I wrote and told em exactly that! the first day of their new page
they replied and asked me to be specific..
sheesh.
Greg Goodman says: May 24, 2013 at 5:20 am
…………..
Hi Greg
There is often very pronounced 13-14 day period in the F10.7 solar index too.
http://www.vukcevic.talktalk.net/CET-Dmax.htm
Cause for this oscillation is the sun’s lumpy magnetic field
http://www.vukcevic.talktalk.net/LFC7.htm
It is not known to me if the sun’s centre of gravity may be eccentric, but if it is, one could speculate about link to the lunar 28 day orbit.
(note to Dr.S. note I am not saying that there is a link)
ozspeaksup map is here
http://earthquake.usgs.gov/earthquakes/map/
Also, disturbingly observed, the quakes are centered on the dam. It it is compromised, the small downstream dam does not look likely to hold. Combine both volumes and it is doubtful the larger dam further would hold. All three volumes would be an inland tsunami all the way to the Bay.
Yet another reason why I don’t wish to live in CA! LOL I will take my Hurricanes and Fire Ants in SC any day! LOL
California is in Labor as a new mountain is being born. Chester and Lake Almanor may survive, but I would not make book on the longevity of Canyon Dam. I also would not advise fly-fishing on the North Fork of the Feather River.
I see Roger Knights (and others) have info relative to this too; why wasn’t this bridge (on an Interstate Highway no less!) replaced as part of the “Shovel Ready” stimulus projects earlier in the present administration? Built ca. 1955 … this coincides with Broderick Crawford and “Highway Patrol”, an old syndicated action crime drama series shot in B&W produced from 1955–1959. Was this was another failure in our ‘leadership’ in keeping critical infrastructure operational, and I’m pointing at Washington state on this too …
The Skagit River bridge was classified as “Functionally Obsolete”. Here’s what that definition includes from: http://www.wsdot.wa.gov/Bridge/Reporting/BridgeRatings.htm
Hmmm … ‘repeat hits and damage’ …
Note that the Skagit River I-5 bridge does not fall into the category of “Structurally Deficient” and so does _not_ appear in this listing of SD bridges:
http://www.wsdot.wa.gov/NR/rdonlyres/6A570363-EC34-4010-986E-591A89CEA6FB/0/StructurallyDeficientBridges_Sept2011.pdf
For completeness, the “Alternate Route” map from Washington state DOT website (this route is over a bridge paralleling the I-5 bridge just east of the I-5 bridge):
http://www.wsdot.wa.gov/NR/rdonlyres/AA6E5609-38C6-453A-A670-105A4AE2C6CA/0/AlternateRouteMap_I5_Skagit_052413_0100.pdf
.
Hoser, that video is one of the coolest things I have ever seen. Thank you so much for posting it.
Hoser, that video is one of the coolest things I’ve ever seen. Thank you for posting it.
Vuk’ says:
There is often very pronounced 13-14 day period in the F10.7 solar index too.
http://www.vukcevic.talktalk.net/CET-Dmax.htm
Cause for this oscillation is the sun’s lumpy magnetic field
http://www.vukcevic.talktalk.net/LFC7.htm
very interesting but the first looks like a circa <30 day not 13-14 day, I don't follow you. What's the source of the polar plot, very nice.
@lsvalgaard & Kadaka:
Um, that “reference” is weak evidence at best:
They looked only at strong quakes (from what I can tell) and had no look for a pattern of more smaller quakes in volcanic locations (where there does seem to be a cyclical pattern of more quakes / volcanic activity during more transitional parts of the cycle – thus the folks claiming the volcanoes cause the cold, despite the cold getting underway first).
As large quakes are even more rare than small ones and medium sized ones, and can have hundreds to thousands of years between events on a fault, I’d expect them to be a particularly poor way to detect a ‘connection’. Looking at overall total energy would be better.
(Please note that I am not advocating for the theory of a solar / quake connection. While I find it an interesting muse, it is poorly founded, to put it charitably… Simply pointing out that the “evidence” of non-connection in that link is just about as poor… IFF you had a 50% increase of Magnitude 6 and under quakes near known volcanoes and a similar increase in volcanoes being active during the transition to cool times / low solar cycles; their method would find nothing. [as those quakes are not “large earthquakes” and the transition is not a ‘peak’ either high or low.] So on the face of it there are 2 significant holes in their method. What’s needed is a study that specifically looks at seismic trends of the size quakes that correlate with volcanoes, likely focused in volcanic places to cut down noise, and the total volcanic activity during various parts of the solar cycle, not just peaks – since geologic things can have large lag times and IF there were any causality we don’t know what part of the cycle would be causal.)
My wife just said she felt the earth move a little bit ago but with us being in North Carolina, i doubt it was related to the quakes in California 🙂
Ah good I’m not the only one that remembered that earthquake swarms and volcano’s are often connected. Oh and it definitely rattled my house.
lsvalgaard says:
May 24, 2013 at 3:23 am
“ville says:
May 24, 2013 at 12:18 am
The moon is approaching its closest encounter with earth.
When the Japan tsunami hit, Earth was at its minimum distance to sun.
Neither has anything to do with earthquakes, e.g. here is earthquake activity with respect to the Moon: http://www.leif.org/research/Earthquakes-Perigee.png”
Do you have a similar chart for Earth orbit around the Sun? Interesting.
Michele says:
May 24, 2013 at 4:05 am
Possible relationship between changes in IMF, M7+ earthquakes and VEI
index, during the transition between the solar minimum cycle 23 and the
rise of solar cycle 24
An example of the poor science that so often is provoked by this assumption. Careful analysis of thousands of geomagnetic storms and interplanetary sector boundaries [HCS crossings] show no relationship to Earthquakes: http://www.leif.org/research/Earthquake-Activity.png
Greg Goodman says:
May 24, 2013 at 4:47 am
There is a distinct periodic ripple in the upper two lines in that graph. Estimating 88.5/6=14.75 days
Looks decidedly lunar. Is that recognised / attributed ?
There are two datasets shown [PAGER and ‘Centennial’]. If you only see a wiggle in one but not the other, it is spurious. It has also been suggested that the lunar influence only shows when it is a full or new moon [something to do with tides as the Sun and Moon are lined up]. Again, analysis shows no effect http://www.leif.org/Earthquakes-New-Full.png
vukcevic says:
May 24, 2013 at 5:01 am
Currently geomagnetic field is getting seriously shaken
Not at all, what we are seeing are the effects of currents in the magnetosphere and ionosphere, which have nothing to do with and no influence on the geomagnetic field.
one can count on such events [earthquakes, perhaps even F5 tornadoes…] to draw out all sorts of pseudo-scientists.
Again, analysis shows no effect http://www.leif.org/research/Earthquakes-New-Full.png