Posted on 01/24/2009 3:53:40 PM PST by Ernest_at_the_Beach
But the new research by UC Irvine scientists, to be published next week, found that major quakes occurred there roughly every 137 years over the last 700 years. Until now, scientists believed big quakes occurred along the fault roughly every 200 years.
The findings are significant because seismologists have long believed this portion of the fault is capable of sparking the so-called Big One that officials have for decades warned will eventually occur in Southern California.
(Excerpt) Read more at latimes.com ...
fyi
You’ll feel it first!
`
Gosh with Yellowstone doing it’s thing and now with this things could get pretty complicated out west. I hope not because I’d hate to see what FEMA’s response would be under Obama!
Also today from http://www.knx1070.com/3-4-Quake-Off-SoCal-Coast-is-Widely-Felt—Sparks-L/3717734
Quake Was Centered Off Coast of Marina del Rey
MARINA DEL REY (AP) — A small earthquake rattled much of the Los Angeles area Friday night, sparking a lot of calls to authorities and to KNX Newsradio but causing no injuries or serious damage.
The U.S. Geological Survey said the 3.4-magnitude quake that hit at 7:42 p.m. was centered about one mile west-northwest of Marina Del Rey, abd aboiut four-and-a-half miles beneath the Earth’s surface.
It was felt by many people along the coast, and as far inland as the San Fernando Valley.
USGS seismologist Susan Hough said the quake was small, but ``if you’re sitting on sand or very loose soils by the coast, you’ll feel it more because the motion is amplified.’’
Hough said scientists will investigate the relationship between Friday night’s quake and Thursday afternoon’s 3.1-magnitude temblor in the San Fernando Valley, as they work to understand how earthquakes can trigger other shakes.
In the meantime, Hough said, the tiny quakes are a good reminder that Southern Californians should be prepared for major seismic activity.
``We don’t want to say the sky is falling, but there’s always a chance the sky could fall,’’ Hough said.
Small earthquake rattles western Los Angeles
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....and there was a Thursday afternoon's 3.1-magnitude temblor in the San Fernando Valley
See #7...also one in SanFernando Valley on Thursday.
Thanks for the Ping, Ernest!
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What is clear from the data presented in the report is that the frequency of earthquakes being reported for the area in the study is a statistical average, as in a rate of “an average of every 137 years”.
The report is not presenting data reflecting a periodic cycle in the prior history of “once every 137 years” or so.
A history reflecting a prior periodic cycle of roughly close to every 137 years, or so, would make the concern larger (more immediate) than it is, as a simple average rate of years between quakes of varying number of years apart;
particularly given the fact that the data available is for such a small part of the actual past time during which quakes in that area must have been occurring (like, how many eons has the Pacific Plate been hitting the North American Plate?).
Earthquakes happen, or they don’t. The LA Times needed some filler on a page.
Come’on Hollyweird!!! Wait for it,....wait for it!!!!!!!!!!!!!!!! Hit it baby, Daddy needs a new pair of shoes!!
Does California have a “Department of the Big One”?
ROFL!
LA Times likely owns it....they splash this kind of disaster soon info on the front page periodically,...helps sell papers ...now at 75 cents a copy!
Back in the late 80s early 90s there was the swarm of fairly good sized quakes. Whittier Narrows, Yucaipa, Northridge. Around that time the emergency preparedness people were predicting that a new round of frequent quakes was certain to occur just ahead. That warning was in vogue around 1992.
Suddenly, the activity dropped off a cliff. For at least a decade, there were hardly any quakes.
The truth is folks, these folks know no more about quake frequencies and near term predictions that you and I do.
Don’t let any of this get to you. It essentially means nothing at all.
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You can see that there is almost no activity on the San Andreas between Parkfield and San Bernardino with Ft Tejon right in the middle. It may well un zip all along that total length.
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