Los Angeles City Council members Tom LaBonge and Mitch Englander…
seek support for a statewide ballot measure to provide funding to cities for earthquake safety improvements.
The resolution, proposed Friday by and seconded by asks the City Council and Mayor Eric Garcetti to support or sponsor state legislation that would help fund local seismic safety efforts.
Early Report on 1994 Northridge Earthquake in Los Angeles
The 1994 “Northridge” earthquake hit the Los Angeles area about 4:30 AM on Martin Luther King Day. This clip contains early scenes of damage and an interview with California governor Pete Wilson.
Loma Prieta Earthquake, CA, 1989, Part 1
This video documents scenes of the October 17, 1989 Loma Prieta Earthquake and its aftermath. The largest to hit the San Francisco area since 1906 and registering a 7.1 magnitude, the Loma Prieta Earthquake’s effects are shown during the Candlestick Park World Series game, in stores, and on the street. Much of the footage is devoted to the California Highway Patrol’s response to, and findings of, the seismic shaking on the San Francisco-Oakland Bay Bridge and the Cypress Street Viaduct, two of the most severely hit structures in the area. Scenes show difficult rescue attempts and earthquake victim evacuations.
California Earthquake – Collapse of the San Andreas – Coming Soon!
Today’s date 8/20/12 – God given prophecies, at qwakeup.org state the entire San Andreas fault line is going to collapse, ruining many places in California. This video is a warning to watch for the tsunami from Japan coming weeks before the mega quake as a sign to get out of California no later than 2 weeks after the tsunami. This video also shows how other cities 200-250 miles away are going to get some damage from this mega quake to come as well.
(Reuters) – California will experience unthinkable damage when the next powerful quake strikes, probably within 30 years, even though the state prides itself on being on the leading edge of earthquake science.
Even a smaller 7.2 quake would cause $30 billion in building damage, $10 billion more in additional costs — and if fires sweep the city, damage could rise by $4 billion, the report sponsored by the San Francisco Department of Building Inspection concluded. About 27,000 of the city’s 160,000 buildings would become unsafe to occupy.
California Geological Survey
B. Rowshandel, M. Reichle, C. Wills, T. Cao, M. Petersen(¤) , D. Branum, and J. Davis
Estimation of Future Earthquake Losses in California
Download report hereDownload
Uniform California Earthquake Rupture Forecast (UCERF)
The probability of a magnitude 6.7 or larger earthquake over the next 30 years striking the greater Los Angeles area is 67%, and in the San Francisco Bay Area it is 63%, similar to previous WGCEP estimates (see Figure 3). For the entire California region, the fault with the highest probability of generating at least one magnitude 6.7 quake or larger is the southern San Andreas (59% in the next 30 years; see Figure 4). For northern California, the most likely source of such earthquakes is the Hayward-Rodgers Creek Fault (31% in the next 30 years). Events of this size can be deadly, as shown by the 1989 Loma Prieta earthquake (magnitude 6.9) and 1994 Northridge earthquake (magnitude 6.7).
According to the new forecast, California has a 99.7% chance of having a magnitude 6.7 or larger earthquake during the next 30 years
The likelihood of an even more powerful quake of magnitude 7.5 or greater in the next 30 years is 46%. Such a quake is more likely to occur in the southern half of the state (37% chance in 30 years) than in the northern half (15% chance in 30 years)
The probability of a magnitude 6.7 or larger earthquake over the next 30 years striking the greater Los Angeles area is 67%, and in the San Francisco Bay Area it is 63%, similar to previous WGCEP estimates
For the entire California region, the fault with the highest probability of generating at least one magnitude 6.7 quake or larger is the southern San Andreas (59% in the next 30 years; For northern California, the most likely source of such earthquakes is the Hayward-Rodgers Creek Fault (31% in the next 30 years). Events of this size can be deadly, as shown by the 1989 Loma Prieta earthquake (magnitude 6.9) and 1994 Northridge earthquake (magnitude 6.7).
Earthquake probabilities for many parts of the state are similar to those in previous studies, but the new probabilities calculated for the Elsinore and San Jacinto Faults in southern California are about half those previously determined. For the far northwestern part of the State, a major source of earthquakes is the offshore 750-mile-long Cascadia Subduction Zone, the southern part of which extends about 150 miles into California. For the next 30 years there is a 10% probability of a magnitude 8 to 9 quake somewhere along that zone. Such quakes occur about once every 500 years on average.
The UCERF model includes the concept that earthquake likelihoods change with time. A fault that has ruptured in a recent large earthquake is less likely to produce another quake in the near future, because tectonic stress has not had time to build back up. Likewise, a fault that last ruptured a long time ago is more likely to produce an earthquake, because the stress on the fault has had time to re-accumulate. The faults with elevated probabilities for an earthquake include the southern San Andreas and Hayward-Rodgers Creek Faults (see Figure 5), although major quakes on these faults may still be decades away.
Important Earthquake Hanbooks
Putting Down Roots in Earthquake Country Handbook EnglishDownload
Putting Down Roots in Earthquake Country Handbook SpanishDownload
7 steps to an earthquake resilient business Business HandbookDownload