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what kind of fault is the hayward fault

The Hayward fault threatens a lot of people and structures as it runs straight through the East Bay. This event marked the end of a period of severely reduced creep on the southern part of the fault that began after the 1989 Loma Prieta, California, earthquake. Joyce Blueford and Mitch Craig lead NCGS members, family, and the general public on a field trip to examine evidence of the Hayward Fault in the East Bay. Understanding the parts of a fault can help you identify what type of fault you’re seeing. Nearly all transform faults are in the deep sea, but the major ones on land are noteworthy and dangerous, such as … The Hayward Fault Zone derived its name from the city of Hayward in the San Francisco Bay Area. Copyright © 2020 UC Regents; all rights reserved, Explore the science behind a simulation of a magnitude 7 earthquake on the East Bay's Hayward Fault and learn what it could mean for shaking potential in your area. 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. Technically speaking, the Hayward is a right-lateral strike-slip fault. Major active faults such as the Hayward Fault are associated with many hazards. 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. This movement may occur rapidly, in the form of an earthquake - or may occur slowly, in the form of creep. 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.. With the last strong earthquake in 1868 and more than a dozen pipelines already convergent. The Hayward fault, for instance, moves at a rate of about 0.2 in. The largest earthquakes recorded on the San Andreas fault include the 1906 San Francisco earthquake (approximately magnitude 7.8) and the 1989 Loma Prieta earthquake … It is located within its central section, between the latitudes of San Jose and Bakersfield. COVID-19 holiday risk: The safest and most dangerous activities, Bay Area Life; Sundays at 6:30 p.m. on ABC7, 'The Earthquake Effect' provides in-depth coverage on Bay Area's readiness for the next major earthquake, The catastrophic fall and slow rise of the Bay Bridge after Loma Prieta, Scientists call San Francisco Bay Area 'Tectonic Time Bomb', MAP: Significant San Francisco Bay Area fault lines and strong earthquakes, From the Archives: ABC7's Peabody Award winning coverage of 1989 Loma Prieta Earthquake, What to pack in your earthquake emergency kit, Prepare NorCal: Disaster Preparedness Resources, Pet preparedness: How to keep your furry babies safe during a disaster or emergency, Most powerful earthquakes in California history above 7.0 magnitude, Earthquake scale: How they are measured and what the magnitude and intensity scales mean, What is an earthquake? The Hayward Fault and the 1868 Earthquake. The Hayward Fault is a strike-slip fault on the surface but changes to a low angle thrust fault as it descends under the Easy Bay Hills. A fault’s length is related to the maximum strength of an earthquake it can produce. The Hayward Fault runs through portions of Fremont and Union City. Damage in San Francisco from the 1989 Loma Prieta earthquake. Copyright © 2020 KGO-TV. The Hayward Fault is a major earthquake fault that runs for nearly 45 miles (72 km) through the East Bay of the San Francisco Bay region. On April 15, 2006, Drs. It suggests that either the fault is creeping there, or there has been recent seismic slip.” In fact, according to Watt et al., even the most recent prehistoric earthquakes along the Rodgers Creek fault and Hayward faults, which struck sometime between 1715 and 1776, could have been a single combined event given dating uncertainties. That is, the slip … The most obvious hazard is that of large earthquakes, which induce ground shaking over a large area that can cause heavy objects to fall and windows to shatter, and can cause structural damage to buildings and bridges. The Hayward Fault has a strike-slip motion which is when one land mass moves, nearly horizontally in the opposite direction of the other on the surface. The Hayward Fault has ruptured about every 140 years for its previous five large earthquakes. The Hayward Fault Zone is a geologic fault zone capable of generating destructive earthquakes.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.It runs through densely populated areas, including Richmond, El Cerrito, Berkeley, Oakland, San Leandro, Castro Valley, Hayward, Union City, Fremont, and San Jose. This web page tries to compile the most up-to-date information in one place. All Rights Reserved. Major active faults such as the Hayward Fault are associated with many hazards. It is a right-lateral strike-slip fault, meaning that motion along it is mainly horizontal, so that objects on the opposite side of the fault from the viewer will move to … The Hayward Fault Zone is a geologic fault zone capable of generating destructive earthquakes. The Hayward Fault splinters from the Calaveras Fault, which itself is an offshoot of the The Hayward Fault is thought capable of generating a magnitude 7.5 quake. Parts of a Fault. Locate the Hayward fault. Different faults in the Bay Area and the probabilities for each one producing a magnitude 6.7 or greater earthquake. ... the site’s distance from the fault, and the type of geologic material at the site. According to experts, this fault causes a major earthquake, on average, approximately every 140 years. You’ll see things marked in the area just south of the zoo, a length of the fault labeled “G1, sl” and a dotted oval marked “G1, df.” G1 means a geomorphic feature (a landform) of “strongly pronounced” character, the most clear-cut kind of evidence. The most dangerous fault in the Bay Area is, as of now, due to fail at any time. The most obvious hazard is that of large earthquakes, which induce ground shaking over a large area that can cause heavy objects to fall and windows to shatter, and can cause structural damage to buildings and bridges. In order to better understand mechanisms of active faults, we studied relationships between fault behavior and rock units along the Hayward fault using a three-dimensional geologic map. Faults may range in length from a few millimeters to thousands of kilometers. High disruption of structures, roads, and utilities. What is likely to be the effect on the East Bay when it ruptures? In 1996, an 18-millimeter creep event, the largest ever observed on the Hayward fault, occurred between surveys 63 days apart. The Hayward Fault is a Strike-slip Fault. Click for more detail. Strong shaking and fault rupture can also lead to many other problems, including landsliding, liquefaction, fires, disrupted transportation routes, broken water and gas pipes, downed electrical and phone lines, and many other dangerous conditions. However, many scientists believe that the Hayward Fault is connected to the Calaveras Fault to the south, the Rodgers Creek Fault to the north and to the Maacama Fault still farther north. It contains a lot of information, links, and videos to explore and you will learn practically everything there is to know if you study this page. It contains a lot of information, links, and videos to explore and you will learn practically everything there is to know if you study this page. What if...A 7.0 earthquake hit the San Francisco Bay Area? Two factors combine to make the Hayward Fault very dangerous. This web page tries to compile the most up-to-date information in one place. Soft, water saturated sands and sediments amplify shaking even at great distances from an earthquake, while bedrock shakes to a much lesser extent. It runs through densely populated areas, including Richmond, El Cerrito, Berkeley, Oakland, San Leandro, Castro Valley, Hayward, Union City, Fremont, and San Jose. The Hayward Fault is the single most urbanized earthquake fault in the United States—in 1868 there were only 24,000 residents living in Alameda County; now there are more than 2.4 million people. These four fault structures are some of the major faults in California at the latitude of San Francisco. It is a member of the San Andreas Fault system that runs from the Gulf of California in the south, to Cape Mendocino in the north. ... What type of plate boundary is closest to it? To find out more about the potential hazards from an earthquake in the Bay Area, or about the specific area that you live in, the USGS has several great Google Earth maps that show: likeliness of a damaging earthquake, liquefaction likeliness, at risk areas, and potential hazards for our infrastructure. Strike-slip faults have walls that move sideways, not up or down. One block is called the hanging wall, and the other is the footwall. It splays to the east and trends between N. 20° and 35°W along some 119 km. This means that it shows its everyday action in the form of aseismic creep, the slow, steady sliding of land along the fault’s margin. Are you, your family, and your business prepared to outsmart disaster? The Hayward Fault is a strike-slip fault on the surface but changes to a low angle thrust fault as it descends under the Easy Bay Hills. High disruption of structures, roads, and utilities. It is among the most active faults and seismologists warn it will likely be the source of the next "big one" in San Francisco-Bay Area. This movement causes stress, which results in earthquakes. Earthquake country just got a little scarier. The cracking of the ground along the Hayward Fault was traced about 20 miles (32 km) from San Leandro to Warm Springs in Fremont, although modeling of survey data suggest that the fault moved as far north as Berkeley, and from these data the average amount of horizontal movement along the fault is inferred to be about 6 feet (1.9 meters). But at its northern end, at Point Pinole Regional Shoreline, the fault can be walked and traced across open land with trees and grass. If a building was unlucky enough to have been built on the fault, the fault will gradually warp and tear it apart. The Hayward fault is a transform or strike-slip fault that moves sideways, rather than the more common faults that move up on one side and down on the other. 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