Recent geological studies indicate that the average interval between the past five large earthquakes on the Hayward Fault is 140 years, meaning that another large quake can occur at any time. Earthquake Setting of the San Francisco Bay Area. Known as the "great San Francisco earthquake" until 1906, one of California's most destructive earthquakes occurred on October 21, 1868, resulting from slip on the Hayward Fault. Cat Spraying No More – How to Stop Your Cat from Peeing Outside the Litter Box – Permanently. Since then, nearly three million people have moved next to the Hayward fault with little regard for its earthquake potential. By digging trenches across the fault, scientists have determined that the last five earthquakes large enough to cause damage have occurred about every 140 years (the “recurrence rate”). Property loss was extensive and 30 people were killed. From the initial shock at 7:53 AM up until 4:00 PM, 26 aftershocks rattled the Bay Area. The earthquake of 1868 was powerful enough — somewhere between a 6.8 and a 7.0 magnitude — that, even after destroying much of the small towns of San Leandro and Hayward, it … Hayward, California after the 1868 quake The Hayward Fault runs through the San Francisco suburb of Hayward, California. Therefore i bought up this site. The plates keep moving, as they have for 30 million years, which means strain continues to build and future earthquakes like the 1868 are a certainty. The Hayward fault is a 90 kilometer long crack in the Earth's crust that travels through the San Francisco Bay area. On October 21, 1868 at 7:53 a.m., a 6.8 magnitude earthquake shook the San Francisco Bay Area for forty seconds. The 1868 earthquake was a result of build up of strain along the Hayward Fault. The San Francisco Bay Area has grown tremendously since 1868. How close to an earthquake fault do you live? In fact, the 1868 earthquake was known as the “Great Earthquake” until 1906. The amount f damage due to the 1868 Hayward earthquake s equal to our expectated consequences following the upcoming next Hayward fault earthquake. The population at greatest risk from a Hayward Fault earthquake is 100 times greater than in 1868. … During the 1868 earthquake, the southern end of the fault ruptured, sending seismic shock waves throughout the region. The three decades mentioned earlier may be an optimistic time span. © Copyright Charismatic Planet - All Rights Reserved. A rail line between Oakland and San Jose, the South Pacific Coast Railroad, was established, but was destroyed in the 1868 earthquake. Get All Your Healthy Superfoods In One Drink, Rock City – Roadside Attraction on Lookout Mountain, Muhammad bin Qasim – The Conquest of Sindh, Halime Hatun – The Beloved Wife of Ertugrul Bey, FREEZE-DRYING – 1906 Improving Food Conservation. The Bay Area lies on an active plate boundary, one that separates the North American and Pacific plates. Explore the earthquake faults, geology, and seismic history in the Bay Area. Hint: Is the number of people and infrastructure built near the fault similar to that in 1868? The morning of October 21, 1868, dawned clear with a temperature of fifty-nine degrees in downtown San Francisco. I strongly believe everything on planet earth is so beautiful, its just a matter of exploration. This figure shows LiDAR topographic imagery of the Hayward Fault, as well as the location of this morning’s earthquake. See maps showing the earthquake probabilities and liquefaction susceptibility of the Bay Area. Known at the time as the "Great San Francisco earthquake," it violently shook San Francisco and surrounding cities, killing 30. October 12, 1868: An earthquake with a magnitude of 6.8 struck the region of San Francisco Bay. October 21, 1868 – 150 years ago this Sunday — a walloping earthquake struck near Hayward, rocking the Bay Area and damaging buildings throughout the Bay Area and as far away as Hollister. Magnitude 6.8 . anawerad Hint Is the number of people and infrastructure built near the fault similar to that in 1868? The magnitude 6.8 Hayward earthquake on October 21, 1868 was one of the most damaging earthquakes in California history. CTRL + SPACE for auto-complete. You can also learn how urbanization has changed the Bay Area landscape since 1868 and much more, including: Why are there earthquakes in the Bay Area? The amount of damage due to the 1868 Hayward earthquake is equal to our expectated consequences following the upcoming next Hayward fault earthquake. Because the Bay Area’s population has grown by more than 25 times since 1868, the next large quake could potentially cause hundreds of deaths and leave thousands homeless. 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