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February 19, 2004

Faults

I have been told there was a small earthquake about 2 weeks ago. Magnitude 3, nothing serious. I live in California since January 2003 but I did not have the "chance" to feel an earthquake yet. There have been a few small ones during this past year but I was either out of town, like two weeks ago or sleeping! I was looking at info about the latest one and I found this fault map on the USGS (US Geological Survey) website. 3 major faults within 20 miles of where I live (the x) including the San Andreas fault. Well well...

southern clifornia faults.
Name Last rupture
(magn.)		 Freq.
(years)		 Slide
(mm/yr)		Probable
Magn.
1 San Andreas Jan 9th 1857 (8) 140 20-35 6.8-8
2 San Jacinto Apr 9th 1968 (6.5) 100-300 7-17 6.5-7.5
3 Elsinore May 15th 1910 (6) 250 4 6.5-7.5
4 Eureka Peak June 28th 1992 (7.3) ? .6 5.5-6.8
5 Pinto Mountain June 28th 1992 ? 1 6.5-7.5
6 Slide Canyon Quaternare ? ? ?
7 Cucamonga ? 600-700 5-14 6-7
8 San Jose Feb 28th 1990 (5.4) ? .2-2 6-6.5
9 Sierra Madre ? 1000s .36-4 6-7

Source: USGS Earthquake Hazards program - Southern California

Posted by sebatl at February 19, 2004 09:27 PM
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