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On September 28, 2004, a magnitude 6.0 earthquake occurred on the San Andreas fault near Parkfield. It ruptured the same segment that ruptured in 1966 and was the seventh earthquake on this stretch of the fault since 1857. Strong shaking was felt for about 10 seconds. What is Your Earthquake Risk?
- Fault Lines, Zones & Risks by County
This fault zone is capable of generating a magnitude 9 (or...
- Preparedness Resources
Earthquake Information & Preparedness Guidelines; Earthquake...
- Fault Lines, Zones & Risks by County
Mar 28, 2005 · Animation of the 2004 tsunami propagation across the Indian Ocean, from Sumatra to Africa. Credit: Anthony Sladen, TO This giant quake of 2004 was followed just four months later by the magnitude 8.7 quake of March 28, 2005. This one was west of Sumatra, under the islands of Nias and Simeulue.
1952 08 22 - Kern County, California - M 5.8 September. 1966 09 12 - Truckee, California - M 5.9; 2004 09 28 - Central California - M 6.0 October. 1987 10 01 - Whittier Narrows, California - M 5.9 1969 10 02 - Santa Rosa, California - M 5.7
From 1850 to 2004, there was about one potentially damaging event per year on average, though many of these did not cause serious consequences or loss of life. [1] [2]
Catalogs of all southern California events recorded since 1932 can be accessed elsewhere. The earthquakes which are listed here are marked with colored squares indicating magnitude. The scale is as follows: Under magnitude 4.5 Magnitude 4.5 to 5.4 Magnitude 5.5 to 6.4 Magnitude 6.5 to 7.4 Magnitude 7.5 and greater = photos = movie
The year 2004 had the most major earthquakes since 1999. In total, there were 16 magnitude 7.0+ earthquakes this year, 6 of them were in Indonesia . Most of the earthquake deaths in 2004 were caused by the magnitude 9.1–9.3 earthquake off the west coast of Sumatra in December.
The energy released on the Earth's surface (M e, the energy magnitude, which is the seismic potential for damage) by the 2004 Indian Ocean earthquake was estimated at 1.1 × 10 17 joules (110 PJ; 26 Mt).
