Cause Of The San Francisco Earthquake

The San Andreas fault line has caused constant development nightmares for large urban areas such as San Francisco as well as the other cities built on top of it. Fault lines are one of the side effects of the earth’s tectonic plates shifting that can result in devastating earthquakes. Some of the most devastating earthquakes in our modern era have occurred along the San Andreas fault line due to a dense population. The most notable and destructive earthquake on the San Andreas fault line occurred in San Francisco in 1906. The reason this earthquake was so deadly was because of its magnitude and the city’s poor planning. This earthquake was a wakeup call for San Francisco and force the city to revolutionize its knowledge on earthquakes and how to protect their city. Today San Francisco is one of the most well prepared cities for an earthquake and has made great discoveries in earthquake safety measures. The 1906 earthquake in San Francisco has drastically changed how the city has developed its zoning and building code policies, and its earthquake research.

The loma prieta earthquake was one of the strongest earthquakes ever recorded ed with a magnitude of 8.9 on the richter scale.Since many forecasts had been presented for the region near Loma Prieta, seismologists were not taken by surprise by the October 1989 event.between

California’s unique geography as a state makes it a very appealing place to call home. From the odd east to west transverse San Gabriel mountain ranges of the Los Angeles Basin, to the bumpy coastal ranges of the Bay Area, any person can find a compatible topographic terrain to their liking. California may seem to be the perfect place to live with its ideal climate and extensive geographic features. However, due to California’s location over the shifting continental plates, coupled with its enormous and also multiple faults, at any time this great state can fall victim to a seismic disaster. After examining evidence from both Rong-Gong Lin’s II Los Angeles Times article of April 18, 2016 and the NOVA videos Killer Quake ( 2006), Earthquake (2007), as well as Geologic Journey II – Episode 3 (The Pacific Rim: Americas) – Part 3 (San Francisco) and The Great San Francisco Earthquake (American Experience ~ 2005), one can take a comparative account of the three major earthquakes of California’s past. Although each earthquake was very devastating on is own; the Great Quake 0f 1906, the Loma Prieta quake of 1989, and the NorthRidge quake of 1994 each amounted to an extensive forfeiture of property and life. Each of these earthquakes created much suffering and loss. It is imperative for each citizen of this great state to understand the damage that a California quake can actually do and be prepared; for the threat of one always looms.

The San Francisco earthquake on April 18, 1906 was one of the most devastating earthquakes felt by a lot of states. At 5:15 am, this earthquake which registered at 8.25 on the Richter Scale shook San Francisco, California. The earthquake lasted less than a minute and it did a lot of destruction in that period of time. The most destructive part during the San Francisco earthquake was the fires which began after, as a result of the earthquake. The fires killed about 3,000 people and left 400,000 homeless (San Francisco Earthquake). The San Francisco earthquake epicenter was located near San Andreas fault and as a result, the damages caused by the earthquake was felt many miles along the San Andreas fault line. The city of San Francisco was known for its culture and economy, and because of the impact of the earthquake and fire, the city was in total disaster. Because of the magnitude of the earthquake and the amount of damage it did to the city of San Francisco, a lot of data and digital images have been collected so that it can be used for references and be displayed at its anniversary.

On August 24, 2014 a magnitude 6.0 earthquake occurred in and around the city of Napa, CA. The earthquake killed one person and injured over 150 people. And these people were treated at Queen of the Valley Medical Center in Napa [1]. More and more earthquakes occurred on this earth. So this grasps people’s attention.

An Earthquake that registered 7.8 on the Richter Scale which lasted approximately 1 minute caused catastrophic damage to the City of Berkeley and LPHG. As a result of the Earthquake 31

Over more than 50 decades there has been multiple earthquakes that have been caused by the activity that takes place beneath and above the surface of the earth. For every earthquake there are various effects and consequences, these are generally not preventable but teachable moments. As we study and explore landforms we learn and better understand how today 's structures came about, what took place decades ago and where do we go from here. Thanks to the technology and inquiring minds we are able to study past events like the 1906 San Francisco earthquake and the 1964 Alaska earthquake. In comparing these two events we can get an overview of what happened and better prepare ourselves for something like that in the future.

The Earthquake shook buildings and walls to the ground. But, what came after the quake was much more devastating. Fires broke out in every direction and this thriving city became mostly ashes. People became curious and gracious in this time of turmoil and that has never before been seen in San Francisco. When all hope was lost the firefighters made a great stand putting out the fire and ending the turmoil.

The tectonic setting for the 1906 San Francisco Earthquake was in the outermost shell of earth consisting of rigid plates that have been moving for hundreds of millions of years. Two of these moving plates meet in western California; the boundary between them is a zone of faults, the principal one being the San Andreas fault. The Pacific Plate (on the west) slides horizontally northwestward relative to the North American Plate (on the east), causing earthquakes along the San Andreas and associated faults. The San Andreas fault is a transform plate boundary, accommodating horizontal relative motions (usgs.gov).

On April 18, 1906, an earthquake occurred in San Francisco with a magnitude of 7.9. The earthquake was caused by the San Andreas Fault since the San Andreas Fault slip over a segment. The earthquake could be felt from Oregon to southern California. Buildings in San Francisco was destroyed by earthquake and fires. Fires started after the earthquake occurred and firefighters were not able to stop the fire because the water mains were broken and because of this, firestorms started to develop around San Francisco. Then, the San Francisco Mayor E.E. Schmitz called the U.S. Army troops to shoot anyone that is found looting. While the army was doing that, firefighters and U.S. troops tried to fight the fire by dynamiting the city to create firewalls.

Northern California. High intensity shaking was felt stretching from Salinas Valley to Eureka on the North Coast. The San Francisco earthquake of 1906 was one of the worst and most fatal earthquakes in both California’s and the United States’ history.

The floods were caused by heavy rain from a tropical cyclone named cyclone Tasha that joined with a La Niña event* caused an overflow of water in rivers and lakes. The La Niña in 2010 was the strongest La Niña since 1973.This caused a lot of rainfall across Queensland. That December was the wettest on record and 107 places had their highest rainfalls ever. 2010 was also recorded as the states most wet spring since the 1900’s and Australia's third wettest year. Floods started across the state in December. On the 28th December a monsoonal trough crossed the coast from the Coral Sea, bringing heavy rain from the Gulf of Carpentaria to the Gold Coast, overfilling a dam in Towoomba, causing it to malfunction and release the water.

The Loma Prieta earthquake was one of the most destructive earthquakes in California history. The Loma Prieta earthquake happened on Tuesday, October 17, 1989, at 5:04 pm. It was a 6.9 magnitude earthquake on the Richter Scale. It lasted approximately 15 seconds. The epicenter of this massive earthquake was located in the forest of the Nisene Marks State Park, near Loma Prieta peak in the Santa Cruz mountains. The epicenter is approximately 60 miles south of the big town of San Francisco. Loma Prieta was triggered by a slip along the famous San Andreas Fault. Also, the quake caused damage

California is due to be hit by an earthquake with an high magnitude of 8.0 comparable to the 1906 San Francisco 7.6 earthquake.

The Loma Prieta earthquake occurred on October 17, 1989 at 5:04 p.m. It had a moment magnitude of 6.9, and lasted 15 to 20 seconds. The epicenter was near Loma Prieta, and this earthquake again caused severe damage to the San Francisco Bay Area, this time claiming 63 lives but almost 4,000 people were injured as a result of the earthquake.