Posted on 07/29/2008 11:43:21 AM PDT by ZGuy
An earthquake is now rocking the Southern California area. (I'm near Dodger Stadium)
As I post this, the USGS has not yet determined the epicenter so click on the link above for the exact location and magnitude from the USGS.
Here are the maps for California and Los Angeles:
California:
Los Angeles:
Here's the historical review of the last seven days:
I just heard that a church in Pomona had one of its exterior walls collapse outward from this morning’s earthquake. No injuries.
Nope, but I'm on the roof. Always wanted to fly in one of them Coast Guard helicopter...
The first post hit Free Republic one minute and six seconds later. Pretty amazing.
CHN: | Chino | Agency: Southern California Seismic Network | |||
Lat: 33.9988 Lon: -117.6804 Distance: 9.2 km from epicenter | |||||
Location: Chino, Benson Ave and Schaefer Ave |
Station Comp | Max Vel (cm/s) | Max Acc (%g) | PSA: 0.3 sec (%g) | 1.0 sec (%g) | 3.0 sec (%g) |
HNE | 11.8722 | 14.4064 | 33.5548 | 4.5627 | 1.2889 |
HNZ | 4.3797 | 13.1777 | 14.8366 | 2.7457 | 0.3668 |
HNN | 14.4672 | 23.8349 | 64.8953 | 8.8384 | 1.1642 |
23938: | Walnut | Agency: California Strong Motion Instrumentation Program | |||
Lat: 34.0210 Lon: -117.8660 Distance: 11.9 km from epicenter |
Station Comp | Max Vel (cm/s) | Max Acc (%g) | PSA: 0.3 sec (%g) | 1.0 sec (%g) | 3.0 sec (%g) |
HNE | 11.1060 | 14.0676 | 38.0877 | 14.5976 | 0.9997 |
HNZ | 4.0990 | 6.1663 | 15.3950 | 5.4991 | 0.4998 |
HNN | 38.5660 | 43.8643 | 102.4670 | 27.9953 | 2.2992 |
Bricks are seen in an alleyway after falling from a building during a 5.4 magnitude earthquake in the Los Angeles, California area that struck at 11:42 a.m. local time, in Pomona, California July 29, 2008. (Danny Moloshok/Reuters)
Good idea, I’m gonna throw some beers in a blue tub and head up.
When I was 14 I came down Mt. Baldy road on a 10 speed. I got as fast as 55 mph (I was speeding) and that was back in the days of no helments. Fun, but a little scary and the eyes do water quite a bit a speed. I never made it all the way up to the ski lifts. I think the second hairpin curve was as high as I made it.
I am no help on that fancy stuff...
I think that was what burbankkarl was commenting on upthread quite a ways...
This morning my Wife asks about where the emergency hand crank radio is? We have had it for two years and she never even made any mention of it before. Since I was flying to KC this morning, I thought she was just a bit worried being alone.
For the first time in better than a month my dog Sarah wanted in the house before I left for the Airport, we let her stay in the house when we are gone on the hot days. She wanted no part of coming in even in the hottest of days for weeks. This morning she was crying to come in. Seemed odd, but I let her come in even though today was not going to be too bad heat wise.
I get into KC at 12:10 Pacific time and there is a TV on when we got into the gate area. 5.8 quake East of LA is the headline. After a few call to work and the wife whom works in Brea. They tell me it was in Chino Hills.
And as you probably have figured out by now, why yes I live in Chino / Chino Hills (same town essentially)
I guess both of the Ladies had a premonition this morning.
A few things were knocked of the bathroom vanity, and a few
unbroken wines glasses on there sides.
Dodged one this time!
In any populated area where building and roadway construction does not meet earthquake zone safety standards, where there is little to no emergency services planning and community wide earthquake preparation, a 5.4 magnitude earthquake has the potential of being a devastating earthquake, with extensive building destruction, bridge collapse and a significant loss of life.
Regarding earthquakes relieving stress: An earthquake can actually create more stress within the fault zone, especially upon either end of the fault as well as any nearby faults. Any stress reduction from today's thrust fault earthquake would be minuscule.
Static Stress Changes and the Triggering of Earthquakes
by Geoffrey C.P. King, Ross S. Stein, and Jian Lin
"To understand whether the 1992 M=7.4 Landers earthquake changed the proximity to failure on the San Andreas fault system, we examine the general problem of how one earthquake might trigger another...
< Snip >
...Further, we find that several moderate shocks raised the stress at the future Landers epicenter and along much of the Landers rupture zone by about a bar, advancing the Landers shock by 1-3 centuries. The Landers rupture, in turn, raised the stress at site of the future M=6.5 Big Bear aftershock site by 3 bars...
< Snip >
...Together the Landers and Big Bear earthquakes raised the stress along the San Bernardino segment of the southern San Andreas fault by 2-6 bars, hastening the next great earthquake there by about a decade."
Static Stress Changes and the Triggering of Earthquakes
Including the 11:42 AM 5.X quake centered in Chino Hills, the Chino Hills, Diamond Bar and Yorba Linda areas have collectively had the most quakes in California all day, registering about 50 of them, most below 2.0, with a few above 3.0.
***********************************************
WLT:
Walnut | Agency: Southern California Seismic Network | ||||
Lat: 34.0095 Lon: -117.9508 Distance: 18.2 km from epicenter | |||||
Location: Hacienda Heights |
Station Comp | Max Vel (cm/s) | Max Acc (%g) | PSA: 0.3 sec (%g) | 1.0 sec (%g) | 3.0 sec (%g) |
HNE | 6.6177 | 18.4099 | 21.7031 | 6.3301 | 0.5300 |
HNZ | 2.6978 | 7.0638 | 4.9292 | 6.1130 | 0.3067 |
HNN | 13.5268 | 21.5266 | 30.2567 | 12.5478 | 0.9316 |
Do you know any FReepers who have the “fancy stuff” down???
God will not be mocked.
Have a question. Is the FR server(s) located in SOCA? I did not noticed any problems because of the earthquake affecting them. Thanks for posting back.
Here's something which you might find interesting:
Prelude to an Earthquake?
Berkeley Lab Scientist Studies Possible Precursors in Micro-quakes
December 8, 2005
BERKELEY, CA A geophysicist from the U.S. Department of Energys Lawrence Berkeley National Laboratory (Berkeley Lab) has identified possible seismic precursors to two recent California earthquakes, including the 1989 Loma Prieta earthquake that wreaked havoc throughout the Bay Area.
After sifting through seismic data from the two quakes, Valeri Korneev found a spike in the number of micro-earthquakes followed by a period of relative calm in the crust surrounding the quakes epicenters months before the quakes occurred.
Although more work needs to be conducted to determine whether other large quakes are foreshadowed by a similar rise and subsequent decline in small-magnitude tremors, Korneevs analysis suggests that these peaks may be indicative of the total set of geological stresses that affect the timing and location of large earthquakes.
Understanding this total stress picture may eventually make it possible to predict destructive earthquakes within a much shorter time frame than currently possible.
Peaks in seismic activity in the crust surrounding a fault could help signal the arrival of large earthquakes, says Korneev of Berkeley Labs Earth Sciences Division. These peaks may be a good mid-term precursor and allow authorities to declare alerts several months before earthquakes...
Berkeley Lab Prelude to an Earthquake?
I'm glad to see that all the ruffled feathers have been smoothed.
I got your message it was no joke funny in how true it could be here or on any forum
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