It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Scientists are watching closely to see if small faults crossing under the Salton Sea are transferring energy to the larger, more dangerous San Andreas fault after a series of small quake swarms in the area.
The quakes appeared to be tapering off by Monday afternoon, according to the monitoring system run by the U.S. Geological Survey and Caltech. But in a 48-hour period starting Saturday morning, 42 quakes shook just south of Bombay Beach on the Salton Sea. The quakes ranged in magnitude from 0.5 to 3.3, with three larger than 3.0 hitting the area Saturday afternoon.
Scientists are particularly interested in the area because an earthquake that starts in Bombay Beach and ripples northwest along the San Andreas fault could be the Big One that devastates Los Angeles, said Graham Kent, a research geophysicist at UC San Diego.
These quakes appear to be taking place at the hazy intersection of several recently mapped faults crossing beneath the Salton Sea and the the San Andreas fault.
The worry for scientists comes from a case in 1987, when a magnitude-6.2 earthquake on one of the crossing faults appeared to trigger a 6.6 quake 12 hours later on the Superstition Hills fault to the south. The San Andreas fault is north of these crossing faults and the geometry is similar, Kent said.
This swarm, he said, "is a flashing yellow light that tells you to be prepared and to spend some time trying to understand the significance."
These last time a swarm of this type occurred in the area was 2001, so they are not especially unusual, said Kate Hutton, a seismologist at Caltech.
Hutton said scientists do not yet know if quakes this small can trigger anything dangerous on the San Andreas.
"Every time you have a swarm of earthquakes, it does raise the chances of having a larger quake, but it doesn't raise it a huge number," she said.
MAG UTC DATE-TIME
y/m/d h:m:s LAT
deg LON
deg DEPTH
km LOCATION
MAP 2.1 2009/03/25 00:33:37 33.312 -115.706 8.1 5 km ( 3 mi) SSE of Bombay Beach, CA
MAP 2.8 2009/03/25 00:30:22 33.304 -115.719 6.8 5 km ( 3 mi) S of Bombay Beach, CA
MAP 1.5 2009/03/25 00:05:05 33.331 -115.704 7.0 3 km ( 2 mi) SE of Bombay Beach, CA
MAP 1.5 2009/03/24 23:51:12 33.330 -115.674 6.3 6 km ( 4 mi) ESE of Bombay Beach, CA
MAP 3.2 2009/03/24 23:43:15 33.311 -115.751 5.9 5 km ( 3 mi) SSW of Bombay Beach, CA
MAP 1.3 2009/03/24 23:08:02 33.308 -115.691 3.8 6 km ( 4 mi) SE of Bombay Beach, CA
MAP 2.2 2009/03/24 22:58:47 33.289 -115.683 6.6 8 km ( 5 mi) SSE of Bombay Beach, CA
MAP 1.2 2009/03/24 22:58:21 33.281 -115.691 4.2 9 km ( 5 mi) SSE of Bombay Beach, CA
MAP 1.5 2009/03/24 22:04:52 33.304 -115.714 4.3 5 km ( 3 mi) SSE of Bombay Beach, CA
MAP 2.1 2009/03/24 21:28:09 33.307 -115.744 4.6 5 km ( 3 mi) SSW of Bombay Beach, CA
MAP 1.1 2009/03/24 21:26:56 33.323 -115.721 6.4 3 km ( 2 mi) SSE of Bombay Beach, CA
MAP 1.3 2009/03/24 20:57:18 33.331 -115.707 6.3 3 km ( 2 mi) SE of Bombay Beach, CA
MAP 1.5 2009/03/24 20:14:46 33.300 -115.716 3.9 6 km ( 4 mi) SSE of Bombay Beach, CA
MAP 1.1 2009/03/24 20:13:18 33.320 -115.706 8.5 4 km ( 3 mi) SSE of Bombay Beach, CA
MAP 1.7 2009/03/24 20:11:26 33.308 -115.712 5.7 5 km ( 3 mi) SSE of Bombay Beach, CA
MAP 1.6 2009/03/24 19:34:50 33.304 -115.714 4.7 5 km ( 3 mi) SSE of Bombay Beach, CA
MAP 1.3 2009/03/24 19:34:41 33.306 -115.710 4.8 5 km ( 3 mi) SSE of Bombay Beach, CA
MAP 2.2 2009/03/24 19:31:19 33.303 -115.721 4.4 6 km ( 3 mi) S of Bombay Beach, CA
MAP 1.7 2009/03/24 19:21:01 33.314 -115.723 2.5 4 km ( 3 mi) S of Bombay Beach, CA
MAP 1.2 2009/03/24 19:14:58 33.303 -115.695 4.1 6 km ( 4 mi) SSE of Bombay Beach, CA
MAP 1.9 2009/03/24 19:06:32 33.317 -115.711 7.0 4 km ( 3 mi) SSE of Bombay Beach, CA
MAP 1.8 2009/03/24 17:59:01 33.302 -115.716 7.1 6 km ( 4 mi) SSE of Bombay Beach, CA
MAP 2.6 2009/03/24 17:46:36 33.307 -115.720 6.3 5 km ( 3 mi) S of Bombay Beach, CA
MAP 2.0 2009/03/24 17:14:22 33.323 -115.720 5.0 3 km ( 2 mi) SSE of Bombay Beach, CA
MAP 1.7 2009/03/24 16:43:39 33.304 -115.713 7.7 6 km ( 3 mi) SSE of Bombay Beach, CA
MAP 1.6 2009/03/24 15:43:55 33.327 -115.712 7.4 3 km ( 2 mi) SSE of Bombay Beach, CA
MAP 1.4 2009/03/24 15:20:09 33.305 -115.715 5.6 5 km ( 3 mi) SSE of Bombay Beach, CA
MAP 2.3 2009/03/24 14:53:52 33.323 -115.731 7.1 3 km ( 2 mi) S of Bombay Beach, CA
MAP 1.4 2009/03/24 14:16:37 33.327 -115.728 7.3 3 km ( 2 mi) S of Bombay Beach, CA
MAP 1.9 2009/03/24 13:54:02 33.331 -115.724 5.8 2 km ( 1 mi) SSE of Bombay Beach, CA
MAP 3.1 2009/03/24 13:52:51 33.314 -115.737 4.2 4 km ( 3 mi) S of Bombay Beach, CA
MAP 2.4 2009/03/24 13:49:27 33.326 -115.724 6.9 3 km ( 2 mi) S of Bombay Beach, CA
MAP 1.9 2009/03/24 13:46:12 33.314 -115.729 6.0 4 km ( 3 mi) S of Bombay Beach, CA
MAP 1.3 2009/03/24 13:26:04 33.312 -115.733 4.7 4 km ( 3 mi) S of Bombay Beach, CA
MAP 2.3 2009/03/24 13:14:50 33.313 -115.741 3.7 4 km ( 3 mi) SSW of Bombay Beach, CA
MAP 1.2 2009/03/24 13:10:27 33.327 -115.707 4.4 3 km ( 2 mi) SE of Bombay Beach, CA
MAP 1.6 2009/03/24 13:03:47 33.328 -115.708 8.4 3 km ( 2 mi) SE of Bombay Beach, CA
MAP 1.5 2009/03/24 12:58:58 33.317 -115.734 7.5 4 km ( 2 mi) S of Bombay Beach, CA
MAP 1.7 2009/03/24 12:19:07 33.302 -115.742 13.5 6 km ( 4 mi) SSW of Bombay Beach, CA
MAP 2.8 2009/03/24 12:17:00 33.313 -115.737 4.2 4 km ( 3 mi) S of Bombay Beach, CA
MAP 1.9 2009/03/24 12:16:43 33.317 -115.721 3.9 4 km ( 2 mi) SSE of Bombay Beach, CA
MAP 1.3 2009/03/24 12:15:06 33.327 -115.723 6.2 3 km ( 2 mi) SSE of Bombay Beach, CA
MAP 1.0 2009/03/24 12:14:54 33.331 -115.716 5.2 3 km ( 2 mi) SSE of Bombay Beach, CA
MAP 2.4 2009/03/24 12:08:29 33.309 -115.741 5.4 5 km ( 3 mi) SSW of Bombay Beach, CA
MAP 1.8 2009/03/24 12:06:46 33.313 -115.718 6.0 4 km ( 3 mi) SSE of Bombay Beach, CA
MAP 1.9 2009/03/24 12:04:01 33.323 -115.719 4.6 3 km ( 2 mi) SSE of Bombay Beach, CA
MAP 2.6 2009/03/24 12:01:51 33.315 -115.733 4.2 4 km ( 3 mi) S of Bombay Beach, CA
MAP 2.7 2009/03/24 11:59:08 33.310 -115.735 4.5 5 km ( 3 mi) S of Bombay Beach, CA
MAP 2.3 2009/03/24 11:58:25 33.319 -115.724 4.2 4 km ( 2 mi) S of Bombay Beach, CA
MAP 4.8 2009/03/24 11:55:43 33.318 -115.728 5.8 4 km ( 2 mi) S of Bombay Beach, CA
These last time a swarm of this type occurred in the area was 2001, so they are not especially unusual, said Kate Hutton, a seismologist at Caltech.
Hutton said scientists do not yet know if quakes this small can trigger anything dangerous on the San Andreas.
"Every time you have a swarm of earthquakes, it does raise the chances of having a larger quake, but it doesn't raise it a huge number," she said.
Scientists are particularly interested in the area because an earthquake that starts in Bombay Beach and ripples northwest along the San Andreas fault could be the Big One that devastates Los Angeles, said Graham Kent, a research geophysicist at UC San Diego.
These quakes appear to be taking place at the hazy intersection of several recently mapped faults crossing beneath the Salton Sea and the the San Andreas fault.
The CEPEC believes that there is a 1% to 5% chance of a large earthquake (magnitude 7.0 or greater) on the San Andreas Fault over the next few days.
www.foxnews.com...
There was a 1 percent to 5 percent chance of a San Andreas quake over the next several days, but the probability decreases rapidly with time, according to the California Earthquake Prediction Evaluation Council.
Experts say that's a tiny slip for a fault so large, but the novelty of having that kind of data is tantalizing for scientists. "If you look at the statistics, they say the odds of something bigger happening is on the order of 1%," said Susan Hough of the U.S. Geological Survey in Pasadena. "It raises your blood pressure as a seismologist, but we're trying to read the tea leaves."
"Clearly [this week's swarm] wasn't sufficient" to trigger an event on the San Andreas, Given said. "Does it mean that a San Andreas event will happen sooner? We don't know."
Originally posted by questioningall
reply to post by Phage
So, in other words the article in the LA Times about scientist concerned about the "big one" hitting due to these quakes ripping the San Andreas, that is not from USGS site, is uuuuhhhhhh...... not "good" enough for you? .................. OK....................
though I am enjoying the pattern I have noticed and am taken accounting of...... of postings. I do so.......... like patterns and watch for them all the time.
I have definitely/ been aware of a pattern that has been occuring over the last couple of weeks!
From: (edited) Sent: Thursday, March 26, 2009 1:27 PM
To: Principals; Cabinet; District_Office
Subject: Earthquake Information
The California Emergency Management Agency has issued an advisory regarding a sequence of small earthquakes near the San Andreas Fault. Agency officials believe there is a one to five percent chance of an earthquake on the fault sometime in the next few days. This information provides an opportunity to check our earthquake preparedness. Principals are asked to review the “duck, cover and hold” preparations and guidelines for earthquakes and to consider other needs should a serious one actually take place. Thank you."