[24], East Bay Municipal Utility District (EBMUD) supplies water to 800,000 East Bay customers who live west of the Berkeley Hills. The relative motion between the North American Plate Additional stabilization includes the driving of large pilings and the connection of additional restraints. The Hayward [29] The modifications completed in Summer 2012 involved the cutting of the stadium into four independent sections, followed by the demolition of the two segments directly over the rubble zone.
They provide the posters and map for the Faulted Floor Highways 80 and 880 and the Port of Oakland. [17], For the thirty years following 2014, the probability of there being one or more magnitude 6.7+ earthquakes on the Hayward Fault during that time frame was estimated at 14.3 percent. through the center of downtown Fremont and many of its suburban neighborhoods where this walk is located. Tule Ponds at Tyson Lagoon to Stivers Lagoon (pdf)(2006), Fremont Earthquake Mainly a lot of sign-age and noticeable land drifts. Tyson Lagoon Wetland Center. These three scenarios show the ground shaking for a magnitude 6.8 earthquake on the Hayward fault.
Also in the park is an exhibit “The Hayward Fault Exposed!” an interpretive viewing and educational exhibit sponsored by the U.S. Geological Survey, City of Fremont, Risk Management Solutions, and Swiss Reinsurance. The Hayward It is becoming widely understood that professional fire fighting, police, and medical services will be overwhelmed by a major event and that neighbors will have to assist each other as best they can. dissects the city. For those interested in more information on the famous 1868 Hayward fault earthquake, the USGS has great information about this event. Dismantling of high pressure and temperature process units and the consequent fire danger to personnel and equipment could produce substantial economic consequences for the western states.
This map was created by a user. This is the version of our website addressed to speakers of English in the United States. It runs through densely populated areas, including Richmond, El Cerrito, Berkeley, Oakland, San Leandro, Castro Valley, Hayward, Union City, Fremont, and San Jose. Tyson Lagoon Wetland Center. area. At the same time, the North American Plate is moving southwestward relative to the Earth's core, but southeastward relative to the Pacific Plate, due to the latter's much faster northwestward motion. Each oval outer section carries two inner train tubes of circular cross section and a central rectangular access and rescue tunnel, with the void between elements filled with concrete. Its last major earthquake occurred on October 21st, 1868, destroying downtown Hayward, killing 5 people and, injuring 30. The complete fault zone, including the Rodgers Creek fault, is divided by seismologists into three segments – Rodgers Creek, Northern Hayward, and Southern Hayward. Creep effects may be seen also in older structures crossing the fault, some of which have been fitted with expansion joints to accommodate this slow motion. Of primary concern with respect to the Hayward Fault is the huge Chevron Richmond Refinery in Richmond. Similar dangerous soil conditions and insufficiently resistant buildings are also on the southern, western and northern boundaries of San Francisco and San Pablo bays and would also be severely affected by a major earthquake on the Hayward fault. There is the possibility that a large earthquake could trigger very large earth flows, particularly if the soils are seasonally saturated with water, possibly rendering extensive areas unbuildable.
Water could be cut off to 2.4 million people living in California's San Francisco Bay Area. [9], The Calaveras Fault is continuous from the Sunol area south to Hollister. The surface of the fault is creeping at less than 0.5 cm (0.2 in) per year in the regions of concern. It extends approximately 50 miles along the foot of the East Bay hills, from south Fremont into the San Pablo Bay. and that much life-safety protective work remains to be done. This potential problem has been addressed by vibratory compaction of the overfill covering the tube. Sorry, there are no tours or activities available to book online for the date(s) you selected. Subsequent seismic analysis indicated the possibility that the overfill could fail due to agitation, allowing the buoyant tube to float upward, misaligning the tracks and possibly overstressing the bolted connections. You can also view a shake map for the event and see how severe the earthquake was in different parts of the Bay Area. USGS The Hayward Fault—Is It Due for a Repeat of the Powerful 1868 Earthquake? Funding and organization for a permanent exhibit at this location is being actively sought, with planning in progress.
HD versions are available below. (More modern construction for these conditions employs linked and "floating" – in mud – lightweight concrete and plastic foam box structures to support a road.) Extensive additional interpretive material concerning the geology and seismology of the Bay Area was presented for viewing, most of which is currently accessible online. United States Geological Survey (USGS) scientists state that a major earthquake occurring on the zone is "increasingly likely". [3] Another fault further north, the Maacama Fault, is also considered to be part of the "Hayward Fault subsystem".[4][5].
offering quality science and math lessons that take our [17] When the next major earthquake occurs on the fault, damage will be catastrophic. The Hayward Fault runs from San Pablo Bay to Fremont. See Explanation of Colors for a more detailed description of the color scheme. Fremont, California 89,162 contributions 3,674 helpful votes Fascinating to see Hayward Fault Exposed, Fremont, CA I went to Central Park and saw the Hayward Fault Exposed ebhibit. Pinole in the north to south Fremont. Nonetheless, Bay area cities and counties have long expected a major earthquake and as a result all building in the past 30 years has been required to adhere to strict guidelines regarding earthquake resistance. Niles/Union City area. Many structures near the bay shore on either side would probably be severely affected by either a major Hayward Fault rupture or a nearby San Andreas Fault rupture. Earthquake Safety Program Construction Updates, The Hayward Fault: Overdue for Destruction, Missing link between the Hayward and Rodgers Creek faults, The Rodgers Creek and Hayward Faults are revealed to be one fault, capable of a Magnitude=7.4 earthquake, The 2018 U.S. Geological Survey (USGS) HayWired Earthquake Scenario Fact Sheet 2018–3016, Rescue Lineament-Bear Mountains fault zone, https://en.wikipedia.org/w/index.php?title=Hayward_Fault_Zone&oldid=974595567, Geology of Contra Costa County, California, Geology of Santa Clara County, California, Geography of Contra Costa County, California, Geography of Santa Clara County, California, Articles using abbreviated captions for seismic magnitude, Articles needing additional references from December 2008, All articles needing additional references, Creative Commons Attribution-ShareAlike License, Hayward Fault Zone earthquakes with a minimum. An earthquake may cause minor landsliding on some slopes of the freeway, and the plastic movement of the fill would likely disrupt the pavement if the movement here of the surface displacement is substantial, possibly presenting a hazard to motorists and shutting down the highway for a while. This region is also covered with dense low-rise urban development, most of which was built soon after the 1906 San Francisco earthquake, and long before even moderately earthquake resistant construction practices had been developed in the late 1920s. lake)
The purpose of this map is to show the location of and evidence for recent movement on active fault traces within the Hayward Fault Zone, California. Exhibit The work was the subject of several lawsuits from neighborhood and environmental groups, who were concerned about such extensive construction on top of a major fault. Normal resolution; HD resolution; Detailed Perspective Views .
The Hayward fault is considered to be particularly dangerous due to the poor soil conditions in the alluvial plain that drops from the East Bay Hills to the eastern shoreline of San Francisco Bay. You can look at numerous pictures along the fault as well as view the actual fault path, all with beautiful satellite images! It is divided into small regions from Fremont to San Pablo Bay. This soil tends to amplify the effects of an earthquake and so producing significantly greater ground motion. These scenario earthquakes rupture 33 miles (54 km) of the Hayward fault extending from Fremont to Berkeley. Like most earthquake faults in the region, it is a right-lateral strike-slip fault; that is, facing the fault from either side, the … source for science about the Earth, its natural and
There are many small active landslides and evidence of numerous large archaic landslides in the Berkeley Hills. Since the fault runs through heavily populated areas, more than 5 million would be affected directly. http://usgs.gov, Field Guide from In addition to extensive modifications to over crossings and elevated structures, largely to prevent dismantling due to shaking or destruction by soil failure, several other unique system feature require special treatment. Some scientists predict that the Bay Area's the next major quake will occur on this fault. Although many structures have undergone seismic retrofitting there are a large number of dangerous unreinforced masonry (mostly brick) structures and chimneys, which can be extremely hazardous to occupants in a large earthquake, and a large number of buildings which are either not bolted to their foundations or with soft stories that are insufficiently resistant to shear forces.
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