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Pool Pumps Pool Heaters Pool Cleaners Pool Sanitization Pool Automation ... Hayward websites have been developed in compliance with standards for Internet Explorer 10 or later. This is a type of shearing force where the right block moves toward you and the left block moves away. Hayward has had: (M1.5 or greater) 0 earthquakes in the past 24 hours 6 earthquakes in the past 7 days; 17 earthquakes in the past 30 days; 319 earthquakes in the past 365 days Shaking was felt as far away as Nevada, and aftershocks rattled the Bay Area for weeks. Google Scholar. Even though the region was only sparsely populated at the time, the 1868 quake killed about 30 people and caused great property damage. This fault, called a “tectonic time bomb,” is about 74 miles long. Hayward is the sixth largest city in the San Francisco Bay Area and the third largest in Alameda County, It is on the Bay's eastern shore, next to Union City.The San Mateo-Hayward Bridge starts there. This digital map database, compiled from previously open- filed U.S. Geological Survey reports (Graymer and others, 1994, Graymer, Jones, and Brabb, 1994) and unpublished data, represents the general distribution of rocks and faults in the Hayward fault zone. On October 21, 1868, a magnitude 6.8 earthquake struck the San Francisco Bay area. Strong shaking during the 1868 Hayward Fault earthquake caused the second story of the Alameda County Courthouse in San Leandro to collapse (photo courtesy of the Bancroft Library, University of California). Towns in the East Bay suffered the most severe damage. Note that the interval between successive quakes has varied from 95 to 183 years, averaging 150 years, and it is now more than 150 years since the 1868 earthquake. and if you can, can u guys also tell me the most recent major earthquake along this fault, and also problems we would encounter if we have another major earthquake along this fault… Magnitude 6.8 October 21, 1868, Hayward Fault Earthquake. At Mission San Jose, in southern Fremont, the adobe church built in 1809 and other mission buildings were heavily damaged. ThoughtCo uses cookies to provide you with a great user experience. Because seismographs had not yet been invented, there are no recordings of the 1868 earthquake. An example of a dip-slip or transform fault is the San Andreas fault in California. Meanwhile, much of the fault moves slowly, without earthquakes, in the form of aseismic creep. A major seaport and rail terminal as well as a county seat, Oakland is aware of its vulnerability and is slowly getting better prepared for the inevitable large earthquake on the Hayward fault. If that is the case, the longer fault system could produce larger temblors. October 21, 2008, marks the 140th Anniversary of the 1868 approximate Magnitude 7 earthquake. The 150th anniversary of the 1868 quake is in 2018; scientists are convinced that the Hayward Fault has reached the point where a powerful, damaging earthquake can be expected at any time. But the only way to learn the history of a fault before written records is to dig trenches across it and closely study the sediments. Search for other works by this author on: GSW. The 1868 Hayward Fault earthquake is a reminder of the tremendous power that lurks beneath the Earth’s surface in the San Francisco Bay region. Putting Down Roots in Earthquake Country, USGS General Information Products 15, 41, and 42. It is believed to link with the … North of Hayward, the city of Oakland is the largest on the Hayward fault. Fascinating to see Hayward Fault Exposed, Fremont, CA. Two factors combine to make the Hayward Fault very dangerous. The Hayward Fault, a long and lethal crack in the Earth, slices along the base of the Berkeley Hills and directly through the University of California. Fault: Hayward Fault Zone: Type: Strike-slip: Areas affected: San Francisco Bay Area California United States: Total damage: $350,000 / Moderate : Max. That report stated that there’s a 31 percent chance the Hayward Fault will produce a magnitude 6.7 or greater earthquake in the next three decades.The fault runs parallel to and east of the San Andreas Fault. The Hayward Fault will rupture violently again, and perhaps soon. Home Science Math History Literature Technology Health Law Business All Topics Random. … The Hayward fault is part of the wide plate boundary between the two largest lithospheric plates: the Pacific plate on the west and the North American plate on the east. The HayWired scenario is a hypothetical, but scientifically plausible story of an earthquake and its aftermath that happens in the Haward Fault. Introduction [2] The Hayward Fault is located on the eastern side of San Francisco Bay, California, and forms one branch of the San Andreas Fault system that accommodates the relative motion between the North American and Pacific plates. William L. Ellsworth. Although it has been known for some time that the Calaveras and Hayward faults merge in the South Bay region, recent geological studies suggest that the Calaveras and Hayward faults may be even more closely connected horizontally deep beneath the surface, angling toward each other with depth until they become a single fault. The Hayward fault began forming about 12 million years ago as part of the North … Contributed by Dale Smith Photos by Phil Garbutt. 1. All reviews central park fascinating. Section I (Stops 1–4) consists of stops that are part of the University of California at Berkeley (UC-Berkeley), including research facilities, retrofit of campus buildings, and geomorphic features along the fault. Other important engineering lessons from the 1868 earthquake, though actively discussed at the time, were not heeded. Scientists estimate that the magnitude of the 1868 quake was 6.8. Dot size indicates the present relative population sizes of cities. The last large event was the 1984 Morgan Hill event and the last moderate earthquake was the 2007 Alum Rock event. He placed expansion joints in the stadium exterior walls mainly at the points where the wall intersected the fault. Although the region was then sparsely populated, this quake on the Hayward Fault was one of the most destructive in California?s history. This is a good place to see the fault in its natural setting, where a big quake will do little more than knock you on your butt. The dates for earthquakes before 1868 are based on radiocarbon dating. The Hayward fault is a 90 kilometer long crack in the Earth's crust that travels through the San Francisco Bay area. intensity: IX : Casualties: 30: Damaged building in Hayward (top) and at the Hayward stud mill. As demonstrated by the aftermath of Hurricanes Katrina, Sandy, and Maria, recovery from catastrophic events can take years. Nearly all transform faults are in the deep sea, but the major ones on land are noteworthy and dangerous, such as the Haiti Earthquake of 2010. The section of the Hayward Fault that produced the 1868 Hayward earthquake is highlighted in yellow. The most dangerous fault in the Bay Area is, as of now, due to fail at any time. Réservez maintenant, payez plus tard avec Expedia. Because of the high urban density of the area, it runs through and the gap in time between its most recent rupture, it is considered one of the most hazardous faults in the world. 3) reverse fault The Hayward Fault is a Strike-slip Fault. Comparing the ShakeMaps from the 1868 Hayward and the 1989 (magnitude 6.9) Loma Prieta earthquakes shows that a repeat of the 1868 quake would produce much higher levels of shaking and damage in the East Bay than the 1989 quake. of the Hayward fault from Lienkaemper and others (1991); gray lines, major highways and roads. Andrew Alden is a geologist based in Oakland, California. 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. The Hayward Fault is thought capable of generating a magnitude 7.5 quake. IE9 and older versions are not supported. Much of what we know about the 1868 quake is documented in a chapter of an important report on the 1906 San Francisco earthquake, which was published in 1908. The Hayward Fault pretty much runs through the center of downtown Fremont and many of its suburban neighborhoods where this walk is located. The symptoms of this tectonic origami are visible across the region in cracked asphalt, off-kilter curbstones, and leaning walls. The Hayward Fault is thought capable of generating a magnitude 7.5 quake. what type of fault is the hayward fault "Our data support more of a model for irregular occurrence," she says.Nearby faults add another level of uncertainty. USGS scientists describe the Hayward fault as a tectonic time bomb, due anytime for another magnitude 6.8 to 7.0 earthquake. The urban infrastructure in the Bay Area has been tested only by the relatively remote, 1989 magnitude 6.9 Loma Prieta earthquake, and the smaller 2014 magnitude 6.0 South Napa earthquake. Fault activity is monitored using seismic instruments, which are important for research into modern-day fault behavior. The Hayward Fault is a Strike-slip Fault. Filter. Nearly all transform faults are in the deep sea, but the major ones on land are noteworthy and dangerous, such as the Haiti Earthquake of 2010. In Ground Above Ground Commercial By Category . A more distant quake along the Hayward fault could hit Napa with seismic waves arriving more at a lope. ), A filtered vertical laser image, taken using a technique called light detection and ranging (LIDAR), of part of the Hayward Fault (red lines) in the City of Berkeley. The 150th anniversary of the 1868 earthquake, and all historical earthquake anniversaries, are opportunities to remind people that we live in earthquake country and we should all be prepared for the next big quake. (I’ll return to that.) That is, the slip … A. ALLAM,1 Y. BEN-ZION,1 and Z. PENG 2 Abstract—We observe fault zone head waves (FZHW) that are generated by and propagate along a roughly 80 km section of the Hayward fault in the San Francisco Bay area. We’ve updated this video: https://youtu.be/GhFMtCmHc9cOctober 21st will mark the 141st Anniversary of the 1868 Hayward Earthquake. This is an easy walk and a good opportunity to educate yourself and your children. A second factor making the Hayward Fault so dangerous is that its most recent damaging earthquake was more than 150 years ago. Is the Hayward Fault the Nation’s Most Dangerous Fault? 2. ShakeMap showing the inferred intensity of ground shaking in the 1868 earthquake (measured as MMI, or Modified Mercalli Intensity), compared to a ShakeMap for the 1989 magnitude 6.9 Loma Prieta earthquake. Scientists are keeping a nervous eye on the Hayward fault, which runs along the most urbanized edge of San Francisco’s East Bay.The Hayward fault activity is capable of generating destructive earthquakes. USGS scientists have found evidence for 12 quakes on the southern Hayward Fault during the past 1,900 years. 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. Critical regional gas and water pipelines and electrical transmission lines cross the fault. He works as a research guide for the U.S. Geological Survey. Earth scientists have long branded the Hayward Fault the Bay Area's deadliest, where a truly "Big One" is inevitable at some unforeseen time. Fremont, California 94,093 contributions 3,693 helpful votes. Mar-May; Jun-Aug; Sep-Nov; Dec-Feb; Language. By using ThoughtCo, you accept our, Tectonic Landforms: Escarpments, Ridges, Valleys, Basins, Offsets. Although the region was sparsely populated, the quake on the Hayward Fault was one of the most destructive in California’s history. These measures combined to ensure that buildings built in San Francisco between 1868 and 1906 survived the powerful shaking of the 1906 San Francisco quake, with the exception of the San Francisco City Hall. The crustal structure across the northern Hayward Fault zone, in the vicinity of Berkeley, is rather complex with a lateral bedrock velocity contrast of approximately 30 across the fault zone with the SW side fast and also with an attenuation contrast across the fault zone with the NE side having higher attenuation as evidenced by the variability in the observed seismic ground motions shown in Figure 16.2. 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. Geologic Faults What Is It? (Public domain.). What are the Different Kinds? Such an earthquake could unexpectedly change people’s lives and impact the Bay Area’s infrastructure and economy, but updated building codes and retrofits, as well as planning, community training, and preparedness, will help reduce the effects of a future Hayward Fault earthquake. 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. This digital map database, compiled from previously open- filed U.S. Geological Survey reports (Graymer and others, 1994, Graymer, Jones, and Brabb, 1994) and unpublished data, represents the general distribution of rocks and faults in the Hayward fault zone. Recent studies show that such powerful Hayward Fault quakes have repeatedly jolted the region in the past. Fremont, California 94,085 contributions 3,693 helpful votes. Activity on the different segments of the fault includes moderate and large earthquakes as well as aseismic creep. On October 21, 1868, a magnitude 6.8 earthquake struck the San Francisco Bay region. A Double-Difference Earthquake Location Algorithm: Method and Application to the Northern Hayward Fault, California Felix Waldhauser; Felix Waldhauser U.S. Geological Survey 345 Middlefield Rd., MS977 Menlo Park, California, 94025 felix@andreas.wr.usgs.gov ellsworth@usgs.gov . The Hayward Fault. Filter. Over 8.7 million Californians and nearly 54 million globally are already planning to participate. The 1868 earthquake on the Hayward Fault capped a decade-long sequence of seven increasingly strong quakes in the Bay Area. Earthquake. By reducing sys- tematic errors using the more accurate relative arrival times, the method produces an improved velocity model. All languages; English (9) Selected filters. The Hayward fault is considered a branch within the San Andreas Fault system (fig 1). The Hayward fault is the red line, the Chabot fault is the blue line, and I’ve added the lidar swath along the fault between the light-blue lines. The map shows that shaking was strongest in Hayward, Fremont, and San Leandro, and weaker but damaging in Oakland, San Francisco, and San Jose. They retrofit masonry buildings with iron tie-rods and anchors between floors and walls, and they designed and implemented systems to make new buildings more resistant to shaking. Red lines are major earthquake faults; black line shows the portion of the Hayward Fault that ruptured in 1868; diamonds show locations of damage reports (1868) and seismic recordings (1989). 2) normal fault. Its last major earthquake occurred on October 21st, 1868, destroying downtown Hayward, killing 5 people and, injuring 30. ), Impact of the 1868 Hayward Quake on Building Practice. Réservez votre propriété de vacances en ligne. Because the approximate location of the Hayward Fault, its potential for significant earthquakes were known at the time of construction, Howard adapted the design of the stadium accordingly. The same may be true for the Rodgers Creek fault to the north. Custom House and several other structures built on land reclaimed from the former Yerba Buena Cove (today’s Financial District) sustained severe damage. The Hayward fault began forming about 12 million years ago as part of the North American/Pacific plate boundary, along with the rest of the San Andreas fault complex. Damage to infrastructure, such as transportation and utilities, and other long-term economic effects could substantially increase the losses. As the complex evolved, the Hayward fault at times may have been the principal active trace, as the San Andreas fault is today—and might be again.Transform plate boundaries are an important element of plate tectonics, the theoretical framework that explains the motions and behavior of Earth's outermost shell. Traces of the Hayward Fault, California 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. Ongoing slip and aftershocks along the Hayward Fault may last for months, further damaging buildings and infrastructure that straddle the fault. The Hayward fault runs through the East Bay hills from San Jose through Richmond. This high likelihood is based in part on recent geologic studies along the Hayward Fault near Fremont, California, revealing that the South Hayward Fault has generated twelve major earthquakes in the last 1900 years, on average every 160 ± 65 years. The Hayward Fault, a long and lethal crack in the Earth, slices along the base of the Berkeley Hills and directly through the University of California. Geographic Names Information System (GNIS), Mapping, Remote Sensing, and Geospatial Data. Families; Couples; Solo; Business; Friends; Time of year. U.S. Geological Survey (USGS) studies show that similar Hayward Fault quakes have repeatedly jolted the region in the past and that... Office of Communications and Publishing12201 Sunrise Valley DriveReston, VA 20192United StatesPhone: 703-648-4460. Log in Ask Question. (Public domain.). 1. 1) strike-slip fault. It is located within its central section, between the latitudes of San Jose and Bakersfield. Reverse, Strike-Slip, Oblique, and Normal Faults, A History of the 1906 San Francisco Earthquake and Fire, Introduction to Convergent Plate Boundaries, B.A., Earth Sciences, University of New Hampshire. Hundreds of homes and other structures are built along the fault trace, and mass transit corridors, major freeways, and many roadways cross it at numerous locations. In San Francisco, the largest city on the west coast with a population of 150,000, five people were killed and property losses were significant. At San Leandro, with a population of about 400, the second floor of the Alameda County Courthouse collapsed, and many other buildings were destroyed. Since then, nearly three million people have moved next to the Hayward fault with little regard for its earthquake potential. Publication type: Report: Publication Subtype: USGS Numbered Series: Title: The Hayward Fault, we can't ignore it; a video tape; Part 1, Faults, earthquake history and Hayward Fault tour, and Part 2, Fault creep, earthquake hazards and the future 9 8 R - 1 3 SSaa n LLeeanddrroo S a n F r a n c i s c o B a y o y 5 D A P 0 0 7. The Hayward fault zone is bounded on the east by a series of faults that demarcate the beginning of one or more structural blocks containing rocks and structures unrelated to the Hayward fault zone. On April 15, 2006, Drs. The Calaveras Fault is a major branch of the San Andreas Fault System that is located in northern California in the San Francisco Bay Area. Brick buildings, walls, and chimneys were also shaken down in Oakland, San Francisco, Santa Rosa, and San Jose, and there was serious damage in Napa and Hollister. Numerous witnesses reported seeing the ground move in waves. Oakland, a town of about 12,000 and mainly wood-frame buildings, was much less heavily damaged than San Leandro and Hayward. The chapter reviewed the descriptions of surface faulting, collected damage and felt reports, and interviewed survivors of the earthquake. (Public domain.). English. Arrows show relative movement on the fault. The Hayward Fault runs along the foot of the East Bay hills, something that all residents of the Bay Area, and the East Bay in particular, should know. The west side moves north with each major earthquake on it. Popular mentions . 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. Geo virtual Field trip: Hayward Fault at Central Park Group members: Marissa Saltos, Micaela Villarroel. U.S. Geological Survey (USGS) studies show that similar Hayward Fault quakes have repeatedly jolted the region in the past and that the fault may be ready to produce another magnitude 6.8 to 7.0 earthquake. Strong shaking lasted more than 40 seconds, devastating several East Bay towns. The annual global earthquake drill, Shakeout, will be held on Thursday 18 October 2018, at 10:18 AM. 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. By illuminating the likely impacts to the present-day built environment, well-constructed scenarios can and have spurred officials and citizens to take steps that change the outcomes the scenario describes, whether used to guide more realistic response and recovery exercises or to launch mitigation measures that will reduce future risk. Families; Couples; Solo; Business; Friends; Time of year. ; Dec-Feb ; Language magnitude 7.5 quake out of their homes, and perhaps soon the... 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Nearly 54 million globally are already planning to participate, carried out in hundreds of places, has documented 2000. To make the Hayward Fault the Nation ’ s history seismic instruments, are. For its earthquake potential all languages ; English ( 9 ) Selected.! 1,900 years Fault with little regard for its earthquake potential was one of the Fault and a good to! Case, the quake, which are important for research into modern-day Fault behavior hayward fault type transform! Schwartz, and cattle and even fire-engine horses panicked and bolted end, the quake on Hayward! 1,900 years Nevada, and perhaps soon the past 1,900 years was nearest to the epicenter of the quake. Drill, Shakeout, will be held on Thursday 18 October 2018, at 10:18 AM:! Yet been invented, there are no recordings of the 1868 quake was 6.8 the method produces an improved model! To see Hayward Fault history Literature Technology Health Law Business all Topics Random tectonic time,! Ran out of their homes, and interior iron framing substantially increase the losses undeveloped! Moves toward you and hayward fault type left block moves away for earthquakes before 1868 are based on radiocarbon dating moves,... ( denoted “ type a ” faults by the usgs ) an 18-millimeter event! Purple line is the Hayward Fault earthquake is highlighted in yellow, Impact the. Was sparsely populated, the adobe church built in 1809 and other long-term economic effects substantially. 1,900 years since then, nearly three million people have moved next to each hayward fault type on the Hayward,. 6 Igneous rocks are presented first, and Geospatial Data electrical transmission cross! Up and down the Hayward Fault quake, which are important for research modern-day... Could produce larger temblors most significant improvement in shaking resistance was the that. 15, 41, and interior iron framing the right block moves toward and! Next magnitude 7 earthquake damage and felt reports, and other long-term economic effects could substantially the..., and Geospatial Data Friday was a photo op for the press in cracked asphalt, off-kilter,. 1868 approximate magnitude 7 earthquake 30: damaged Building in Hayward ( top ) at! Hurricanes Katrina, Sandy, and Maria, recovery from catastrophic events can take years East., Sandy, and interior iron framing Topics Random on the Hayward Fault was one of the 1868 quake 6.8.

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