Hayward fault creeps with a rate of approximately 1cm/year. Every April (anniversary month of the SF '06 earthquake), tours would come and see all the wonderful signs of creep. In my very second post, back in 2007, I suggested that we take over the name, and a couple years back I pointed out eight iconic places to see the Oakland fault in action. One of Saleeby's most interesting lines of research is exploring how the dense rocky root of the southern Sierra broke off (delaminated) and sank into the hotter, softer mantle beneath to form a "lithospheric drip" starting about 4 million years ago. Among other things, I talked about the fault's peculiar behavior called aseismic creep, in which the two sides of the fault move slowly past each other at just a few millimeters per year without the help of earthquakes. See them shown in blue in this figure from the Geology paper. The fault slipped 3 to 6 feet along the fault. The Hayward, a major branch of the San Andreas fault system, exhibits creep along at least 68 km of its <100 km length (Fig.1). How California's Warping Microplate Makes Its Faults Creep. To those who still canât get enough of this amazing geologic feature, this postâs for you. The Memorial Stadium is located on top of the Hayward Fault trace. They clearly show the right lateral movement of the fault as depicted on the road. Although there are no observations of surface creep in San Pablo Bay, repeating earthquakes identified along the offshore Hayward fault trend ( 18 ) suggest that seismic Creep is occurring along it. For ten years I was lucky enough to have my office right on top of the fault, in the infamous "Section KK" at the stadium. When people learn about it, they often wonder if fault creep can defuse future earthquakes, or make them smaller. Create a free account and view content that fits your specific interests in geotechnical engineering. NCGS Commemorates the 1906 Great Earthquake by Walkingâ¦the Hayward Fault! 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. I explained that creep doesn't remove much earthquake energy because it only affects shallow parts of the fault that can't store much energy anyway. Under the assumption that the seismic hazard associated ⦠Professor Douglas Dreger, of the Berkeley Seismological Laboratory, University of California at Berkeley. In the Figure you can see the almost 90 degrees change in the course of the stream. The authors are Laetitia Le Pourhiet, a French geophysicist, and Jason Saleeby, a geologist at Caltech's Tectonics Observatory who has studied the southern Sierra Nevada for decades. The Sierra Nevada microplate rotates slightly and moves northwest at a few millimeters per year relative to the rest of the North America plate. Figure 3 also shows nicely how the sidewalk and pavement are damaged only in the zone of the Hayward trace. On its west side, the drip is still attached and pulling down on the crust. The Figures that follow show indications of the Hayward fault creep on a road in the City of Hayward. Just days later, the September issue of the journal Geology came out with a paper that makes an intriguing connection between our creeping faults and slow activity on the other side of the Sierra Nevada microplate, where the Earth's outer shell is secretly splitting apart. The result is that the southern Great Valley is at its widest and deepest there, in the Tulare geologic basin. I pointed out places where creep has been gently distorting the streets. When the authors fed that result into a model of the San Andreas fault's physics, the model accounted for the size and nature of the creeping section. Creep rates over ⦠It was approximately a magnitude 6.9. In October 2007, a magnitude 5.6 event on the Calaveras Fault, near its junction with the Hayward outside of San Jose, was felt as far away as Sacramento. Our project is a literature review of scholarly papers and will attempt to cover select topics in the realm of earthquakes and landfills with a condensed discussion of the topic at hand. The Hayward fault slips in large earthquakes and by aseismic creep observed along its surface trace. Creep is steady fault movement, varying from continuous to episodic with creep events lasting minutes to days. Figure 3 also shows nicely how the sidewalk and pavement are damaged only in the zone of the Hayward trace. The Hayward fault is considered to be one of the primary hazards in the San Francisco Bay region. But I couldn't say much more about it because geologists studying the creep problem have lots of questions, several hypotheses, and no answers. 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. The paleoseismic record allows multi-segment, Hayward fault-RCF ruptures, but does not require it. Its paleoearthquake record suggests such events occur regularly and frequently, with a 161 65 1Ï and 10 yr (1standard error of the mean) mean recurrence interval (Lienkaemper et al., 2010). An aseismic creep exists along the Calaveras fault in Hollister, California. The International Information Center for Geotechnical Engineers, Hayward Fault Deformation: Berkeley Memorial Stadium Damage, Hayward Fault Deformation: Migration of Hamilton Creek, Structures on top of the Hayward Fault Trace, Science Education Resource Center (Carleton College), Geotechnical Engineering Photo Album: A collection of photographs for educational instruction by Ross W. Boulanger and J. Michael Duncan, EERI Webinar: Case Studies of Financial Decision-Making using Near Real time Post Earthquake Information, by Dr. David J. Wald, Soil Liquefaction Analysis Software (NovoLIQ), Powerful M 7.0 earthquake struck Greece and Turkey: At least 60 casualties, M 7.5 earthquake hit Alaska triggering tsunami warnings, Massive earthquake hits Alaska: Tsunami warning issued, M 7.0 earthquake struck Papua New Guinea: Tsunami warn issued, Rockslide triggered after M 5.8 earthquake struck central California, Road Deformation due to Hayward Fault Creep. 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