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The faults are boundaries between blocks, and each block is constantly moving, which we can see by analyzing GPS (Global Positioning System) data. Like the Loma Prieta earthquake of 1989, the San Andreas Fault was responsible for … This web page tries to compile the most up-to-date information in one place. The Hayward fault runs through the East Bay hills from Richmond to San Jose. Analysis of a geodetic network of 115 lines crossing the San Andreas, Hayward, and Calaveras faults in the vicinity of San Francisco Bay and measured repeatedly between 1970 and 1980 has revealed details about the accommodation of relative plate motion in this area. The earthquake will cause $90.4 billion damage to residential buildings and 96.4 to commercial buildings. DAMAGE LIKE THIS IS A VERY REAL POSSIBILITY WHEN THE CASCADIA SUBDUCTION ZONE RUPTURES    Courtesy the Daily Mail. San Andreas. HAYWARD FAULT RUNNING THROUGH CENTER OF UC BERKELEY SPORTS STADIUM.. MOVEMENT OF EARTH SHOWING HOW EARTHQUAKES DAMAGE HOUSES. The ground consistently moves a few millimeters each year, pulling apart sidewalks, pipelines and other structures that sit astride the fault. The San Andreas Fault is the most famous fault in the world. The Hayward Fault. The Hayward Fault splinters from the Calaveras Fault, which itself is an offshoot of the The San Andreas Fault and the San Francisco Bay Area This image shows San Andreas Lake and Crystal Springs reservoir from the air, looking SouthEast from HERE. The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers (750 mi) through California. Thick red lines show the extent of historic ruptures. The San Andreas Fault and the San Francisco Bay Area This image shows San Andreas Lake and Crystal Springs reservoir from the air, looking SouthEast from HERE. This includes Cripple Wall Retrofits, No Cripple Wall Retrofits, Retrofits of Homes with Living Area above a Garage, and Hillside Home Retrofits, THE SAN ANDREAS FAULT IS QUITE DANGEROUS AND CAN CREATE AN EARTHQUAKE 8.0 OR MORE ON THE RICHTER SCALE. The transform boundary initiated about 30 million years ago when a spreading ridge separating the Pacific and Farallon Plates intersected with the North American continental crust near what is now Los Angeles, California (Fig. In other words, in 11 more years we will have exceeded the historic maximum span of 160 years (U.C. Click on a pin on the map to see more information. Bay Area Retrofit assumes no responsibility or liability for use by homeowners, contractors, engineers, or anyone else of the information provided on this site. The SAFZ is the main part of the boundary between the Pacific tectonic plate on the west side and the North American plate on the east side. Fault-plane reflections reveal that two of these faults, the San Andreas and Hayward, dip toward each other below seismogenic depths at 60?? The “zone” part of the name means it’s a system with the main fault and many sub-parallel faults that all together take up the motion between the two plates. Many earthquakes have occurred along it, including famous ones in 1857, 1906 and 1989. Practically every house is the Bay Area is being threatened. The faults shown here are represented by simple lines which do not convey how complicated they can be. This shows that the average time between earthquakes includes some intervals that are short and some intervals that are long. But the data can’t be used to make predictions: we do not understand earthquakes well enough to know exactly where the next earthquake will occur, what the magnitude will be, or exactly when it will happen. When it stops, your body moves as it is pushed forward. The 1906 San Francisco earthquake is estimated to have been in the 7.8 range (and possibly even larger.) San Francisco Bay Area Earthquakes: The Hayward and San Andreas Faults are probably the most studied earthquake faults in the world, so a lot is known about them. The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers (750 mi) through California. There are only two large known historic earthquakes on the San Andreas Fault in southern CA, the most recent in 1857, and before that one in 1812. A section of sidewalk in Hayward that showed the movement of the Hayward Fault was 'fixed' by the city, much to the dismay of geologists. Scientists are working to improve forecasts that estimate how often future earthquakes will occur and how much the ground will shake so engineers and planners will know where to focus efforts to mitigate the effects of damaging earthquakes. Historic information doesn’t provide enough data to establish whether or not there is a pattern in the timing of earthquakes, but paleoseismology has provided an abundance of data. This fault is about 74 mi (119 km) long, situated mainly along the western base of the hills on the east side of San Francisco Bay. The San Andreas Fault is locked in many places; much of its energy is released in the form of earthquakes. Its notoriety comes partly from the disastrous 1906 San Francisco earthquake, but rather more importantly because it passes through California, a highly-populated state that is frequently in the news.And with many research institutions dedicated to studying such an accessible fault, the SAF has become a household name. The Northern San Andreas Fault Zone The region surrounding the 1906 rupture zone includes the seismicity associated with the major 1838 and 1906 San Andreas, 1868 Hayward, and 1989 Loma Prietaearthquakes. The Hayward fault under Oakland is more dangerous than the well-known San Andreas fault in Southern California, according to a new study that says it has the potential to kill at least 800 people and injure 18,000 more, The Los Angeles Times reported. The USGS also has a webpage that analyzes what will happen if a 7.0 earthquake has its epicenter in Oakland or Fremont. Public domain.). Retrofit design is based on many factors. The San Andreas and Cascadia fault have a potentially deadlier counterpart lurking in the East Bay region of Northern California. Posted April 19, 2018, under Blog. Using the forecasts, we can properly engineer structures, plan for earthquake response, and be prepared at home to make a big difference in the impact of a significant earthquake. Scientists are now saying that the “Big One” in California may not be caused by the San Andreas fault line, but by the Hayward Bay fault line. Thick red lines show the extent of historic ruptures. Here is the graphic history of earthquakes on the Hayward fault. The Hayward Fault is a "tectonic time bomb, due any time for another magnitude 6.8 to 7.0 earthquake," according to a 2008 USGS report. The Hayward Fault dissects Fremont creating offset features. The study concluded that there is 33% likelihood of a surface-rupturing earthquake within the next 30 years. It has an average repeat cycle of 140 years. The scariest scenario for the next major earthquake may […] According to a new study, the Hayward fault line that runs under Oakland, California is believed to be more dangerous than the infamous San Andreas fault line that spans Southern California.. The four areas singled out in the study are: Hayward, Rodgers Creek, northern Calaveras and Green Valley. Most cities in South Bay are about 5 miles from the San Andreas fault, while the Hayward faults cuts through many East Bay cities (see California Geological Survey - CGS's Information Warehouse.). 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