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CALIFORNIA Earthquakes
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PostPosted: Thu Jun 16, 2011 11:05 pm    Post subject: CALIFORNIA Earthquakes  Reply with quote

CALIFORNIA Earthquakes
New Hidden Quake Fault Found in California
16 Jun, 2011
You'd think in a seismically active area like California that every potentially earthquake-producing fault to be found would've been identified. It turns out there are plenty of such faults hiding in the ground, and one of them has just been found.
And this fault holds the potential of producing more than just an earthquake — it could also release a flood from a nearby dam.

Scientists with the U.S. Army Corps of Engineers were inspecting the Martis Creek Dam, which sits just outside Truckee, Calif., and about 35 miles upstream from Reno. It is one of 10 dams in the United States that has “urgent and compelling” safety concerns, according to the Corps, which owns the dam. Data from the most recent evaluation revealed that, not only does the dam have significant leakage, it also lies in close proximity to not two, but three fault zones.

The newly discovered, active, 22-mile-long strike-slip fault is named Polaris for the old mining town it runs through (by contrast, the San Andreas Fault is more than 800 miles long).

The Polaris Fault was discovered using laser imaging technology known as LiDAR, which was used as part of the U.S. Army Corps of Engineers’ evaluation of the dam. LiDAR emits laser pulses down toward the ground from an airplane — even through dense vegetation — to get high-resolution topology maps. Once researchers stripped off the heavy pine tree layer from the maps, they found evidence of the fault sitting just 200 meters from the dam.
"We weren't expecting it at all," said Lewis Hunter, a senior geologist for the U.S. Army Corps of Engineers Sacramento District.

By looking at the glacial terraces that run through the area, geologists found that one of the terraces offset by seismic activity on the side of the Truckee River was about 15,000 years old, well within the 35,000 years that the Corps. uses to define an active fault. "We feel very confident it's within our range for being active," Hunter told OurAmazingPlanet.

The fault could produce an earthquake with up to a 6.5 to 6.9 magnitude, according to the study published by Hunter and his colleagues in the June issue of the Bulletin of Seismological Society of America. Because the fault connects to others in the area, the magnitude could be even higher if they ruptured at the same time.

As for the Martis Creek Dam, Polaris just adds to its seismic worries. Hunter noted that because the dam is already known to be in an active fault zone — another fault runs directly under the dam — the water levels are kept as low as possible. However, because the Polaris sits between the dam and its spillway, if the water levels were higher than usual, a very big earthquake could potentially flood a portion of Reno.

Although one USGS scientist described the finding to Hunter as like being "slapped in the face," the reality is that there are likely countless smaller unknown faults in the region and around the world. Hunter said that throughout the east face of the Sierra Nevada Mountains, there are quite a few systems that are likely undiscovered but responsible for a large portion of tectonic movement.
"They are there," he said, "and potentially a hazard."

A Great Earthquake coming
Vision of Michael Boldea

California-Mexico Border earthquakes, Salton Sea
Salton Sea area are volcanoes, 2016 activity
Many quakes down here in Southern Calif, volcano, 3 pages

California State NEWS

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HARBINGER  WARNINGS - Isaiah 9 prophecy
When GOD destroys USA, you cant say He didnt WARN us!

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PostPosted: Wed Mar 06, 2013 10:32 pm    Post subject: Reply with quote

Large release of methane off Los Angeles coast
March 2013  EARTH FARTED!   — Unusual concentrations detected by haz-mat crews — Gas may be from shift in tectonic plates
CBS Los Angeles, March 3, 2013 (Emphasis Added): Authorities say a foul odor that spurred calls to fire departments throughout the city on Sunday is possibly the result of the large release of methane in the Santa Monica Bay. Santa Monica Fire said in a department statement that they believe the strong odor was caused by a naturally occurring methane leak below the ocean floor. “This morning there was a large release of natural ocean floor methane released in the Santa Monica Bay,” the statement said. [...] Brian Humphrey, a spokesman for the Los Angeles City Fire Department, said the odor was noted inland from the Santa Monica Bay.

KPCC (h/t Anonymous tip), March 3, 2013: Santa Monica fire haz-mat crews detected unusual concentrations of odorless methane gas in the air that they believed to be coming from either a patch of pungent algae or a sulfurous gas-laced methane bubble, said a dispatcher. That may night be the case, however. Sam Atwood, a spokesman for the Air Quality Management District (AQMD), said his agency has not confirmed the Santa Monica Fire Department’s theory.

KTLA, March 4, 2013: Officials say a foul stench in Santa Monica over was probably caused by a large release of methane in the ocean. [...] A Santa Monica fire hazmat team took readings off the coast near San Vicente Blvd., and found methane in the water. [...] Authorities said that recent changes in water temperature may have caused plankton and algae beds to bloom, releasing methane just below the surface. The gas also might have been produced by a geologic event, such as a shift in tectonic plates.

KABC, March 3, 2013: Santa Monica hazmat crews found unusual concentrations of odorless methane gas in the air. Officials believe either a pocket of stinky algae, or a bubble of methane laced with sulfurous gas, surfaced in the ocean.

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PostPosted: Fri May 24, 2013 1:01 am    Post subject: Reply with quote

6.5  earthquake shakes northern CALIFORNIA
January 9, 2010
 Powerful quake off the coast of Northern California causes widespread power outages, property damage and minor injuries, fraying nerves in several communities.
6.5  earthquake  33 miles WSW from Eureka, California, many aftershocks.
Many residents lost power, some injuries and damage.
There have been many earthquakes offshore Eureka in the past year or so.
The earthquake struck off the coast of Northern California Saturday afternoon,
shaking buildings south of the Oregon border and knocking out power in several coastal communities.
It had a big jolt to it at the end
At least 12 aftershocks reported
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PostPosted: Fri May 24, 2013 1:08 am    Post subject: Reply with quote

Earthquake swarms in Southern California
June 7 and 8, 2010

There have been a few small earthquake swarms just west of Los Angeles.
Last time it swarmed there, they had the northridge quake.
A swarm of small earthquakes continued to occur overnight in the Big Bear Lake area.
More than a dozen quakes were recorded in the last 12 hours in the San Bernardino Mountains region, most of them small.
Another swarm of small quakes hit the Santa Monica Bay on Monday, including a 3.6 and 3.7 temblor.

northridge quake
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PostPosted: Fri May 24, 2013 1:16 am    Post subject: Reply with quote

5.7 earthquake Northern California
May 24, 2013

113 miles north-northeast of Sacramento, Calif.
42 miles NE of Paradise, California
99 miles NW of Carson City, Nevada

Early damage reports posted on Twitter included broken bottles and glasses and pictures knocked off walls.
The quake was felt throughout Northern California in Sacramento, Lake Tahoe and San Francisco and was also felt in Reno, Nevada.

Some Damage Reported
An earthquake in far northeastern California did not injure anyone but did cause moderate damage, including to a water tank that supplies hundreds of homes with drinking water.
Plumas County Sheriff Greg Hagwood said the magnitude-5.7 quake sent items tumbling from grocery store shelves and downed chimneys when it hit at 8:47 p.m. Thursday.

The U.S. Geological Survey's National Earthquake Center said the temblor was centered near Greenville, about 25 miles southwest of Susanville, and was felt as far away as San Francisco and in two other states. It was followed by multiple aftershocks, including a magnitude 4.9 quake that struck early Friday morning.
About 300 people were affected by the damaged water system, Hagwood said.

USGS quake new website

Last edited by CJ on Sat May 25, 2013 5:36 am; edited 1 time in total
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PostPosted: Sat May 25, 2013 7:51 am    Post subject: Reply with quote

Damage reported from magnitude-5.7 quake in Calif.
May 24, 2013 Residents in northeast Calif. assess damage after magnitude-5.7 quake; aftershocks reported

Residents in rural northeastern California assessed damage to their homes and businesses Friday from a magnitude-5.7 earthquake, one of the strongest temblors to hit the densely forested region in decades.
The quake centered near Greenville downed chimneys and sent items tumbling from grocery store shelves when it hit shortly before 9 p.m. Thursday. It also ruptured a tank that supplies residential drinking water, leaving 300 people under a boil advisory until further notice.

"Without question, it's the strongest quake I've ever felt here," Plumas County Sheriff Greg Hagwood said. "It was very unsettling, and it lasted long enough to create a measure of anxiety."
Despite the damage, no injuries have been reported.

The earthquake was felt in Reno, Nev., about 100 miles south; as far away as San Francisco, 230 miles southwest; and in Oregon. About four dozen aftershocks have been reported, including a magnitude-4.9 temblor that struck early Friday.
Pacific Gas & Electric said about 660 customers lost power on the southwestern edge of Lake Almanor at about 9:30 p.m. Thursday. Electricity has since been restored.

3 houses had moderate damage including collapsed chimneys and cracked plaster. County officials said the total damage isn't yet known because many homes in the area are seasonal and unoccupied.
Hagwood added supermarkets and other stores "had a lot of things come off the shelves."

Susan Shephard and her husband, Alan Shephard, who run the Quail Lodge at Lake Almanor near the epicenter, said they were watching "The Hunger Games" on TV when the whole building started shaking.
"All of a sudden things started falling off the shelves, mirrors fell off the wall, vases fell down to the floor, everything started crashing," Susan Shephard told the Redding Record-Searchlight. "It felt like the end of our world."

The epicenter was not far from High Desert State Prison in Susanville, but wardens reported no power outages or damages to the facility or its operations, said Jonathan Parsley, a spokesman for the California Department of Corrections and Rehabilitation.

The quake was the most powerful to hit the mostly wilderness region since 1934, said Keith Knudsen, deputy director of the U.S. Geological Survey in Menlo Park.
It appeared to have occurred along a strike-slip fault line similar to the San Andreas. More than 9,000 people including from neighboring states logged onto the USGS website to report feeling the jolt.
"It was a pretty good size quake," Knudsen said.

The quake hit a rugged region where the Sierra and Cascade mountains meet. More than 100 lakes and 1,000 miles of rivers and streams flow through more than a million acres of national forest. About 22,000 people live in Plumas County.

The region's seismicity is not well-studied because the terrain is rugged and dollars have been spent on analyzing faults in more populated corridors like the San Francisco Bay area where the earthquake risk is higher. Since Thursday's quake, scientists are mulling putting more portable monitors near the epicenter.

6.0+ EQs have been heating up a bit the last few days - this one in Northern CA came close.
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PostPosted: Sun May 26, 2013 4:15 am    Post subject: Reply with quote

Scientists mystified why Northern California earthquake was felt across such a large area
May 25, 2013 – CALIFORNIA
– A magnitude 5.7 temblor Thursday night was the largest earthquake to shake California since 2008 and has generated curiosity from seismologists. The temblor occurred in a rugged section of Northern California that has not been studied as thoroughly as Southern California and the Bay Area and has less monitoring equipment. Experts said they were surprised the quake was felt over such a large area, and they plan to go to the region to investigate. The magnitude 5.7 quake struck around 8:47 p.m., about 150 miles northeast of Sacramento; its epicenter was about 27 miles southwest of the town of Susanville. The last quake of similar magnitude, recorded at 5.5, struck Chino Hills in San Bernardino County in July 2008, said David Schwartz, an earthquake geologist for the Northern California USGS division in Menlo Park. It caused little damage, but it was the most sizable quake to hit a metropolitan part of California since the much larger and destructive 1994 Northridge quake. Thursday’s quake did occur in a zone with known active faults, said David Schwartz, an earthquake geologist for the Northern California USGS division, including a series of faults that extend through the northern end of Lake Tahoe all the way to Oregon. But 5.7 is the strongest magnitude recorded in the area. This mountainous eastern Sierra Nevada region, known for its lakes, rivers and national forests, has had about seven magnitude 4 earthquakes since the 1930s, Schwartz said. Scientists are still studying the intensity of Thursday’s shaking and have moved seismographs there from more populated areas to monitor aftershocks. Within minutes of the first quake, more than 7,000 people reported feeling it, from across state borders into Oregon and Nevada and as far south as the San Francisco area, according to the U.S. Geological Survey website. Officials in Susanville and Sacramento said the quake set off a number of home and car alarms and rattled windows. A Chico resident told The Times he felt a slow roll that lasted about 30 seconds.The quake itself was not a huge surprise for Schwartz’s USGS division, but “what was interesting was it was felt along an unusual distance,” he said. “Earthquakes in different parts of the state are felt over different distances. We just haven’t had that many examples of earthquakes in this part of the state, really, for comparison. There are more interesting questions now than we have answers for, at present,” he said. –LA Times
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PostPosted: Wed May 29, 2013 3:59 pm    Post subject: Reply with quote

4.6 earthquake hits off Santa Barbara coast
29 May 2013
 A magnitude-4.6 earthquake struck off the Santa Barbara coast Wednesday morning, according to the U.S. Geological Survey.
The temblor struck at 7:38 a.m. about three miles west of Isla Vista, the USGS reported. Initial reports indicated that the quake had a magnitude of 4.9, but that was later adjusted to 4.6
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PostPosted: Fri Jun 28, 2013 10:12 am    Post subject: Reply with quote

June 27, 2013  Following USSC anti-Christ ruling on DOMA, a 3.9 earthquake hit Hollister, California at 8 pm,  It was felt strongly in the Gilroy-Hollister area South of Sin Francisco Bay.
This would not be significant, but for the Hollister bubble on Calaveras fault. It could worsen.
San Andreas, Hayward, and the Calaveras are all part of the San Andreas fault system.

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