The main topic of this article is the possibility of larger earthquakes on the San Andreas Fault. These earthquakes would stem from small scale earthquakes in the Salton Sea near southern California. There is reason to believe that the Salton Sea area could be having more of an impact on how the San Andreas Fault reacts over time. This newly found fault, named the Salton Trough Fault, is next to the San Andreas Fault and could be causing it to become more and more unstable as time goes by. The proximity and parallelism of these two faults, according to Scripps Institution of Oceanography (2016), “could impact current seismic hazard models in the earthquake-prone region that includes the greater Los Angeles area” (para. 1). Scientists
• This earthquake may not have released all of the strain stored in its rocks next to the fault this reveals a potential earthquake in the Santa Cruz Mountains in the near future. The occurrence of the earthquake showed that the Earth did not exhaust all its strain and hence other earthquakes could be expected. However, the dates could not be predicted. The extent of the damage could have been much more devastating for the region, but with the earthquake occurring near the coast this made half of the felt area westward in the Pacific Ocean. The occurrence of aftershocks ten days later reinforces the unpredictability nature and hence makes Geology to be a study that is always evolving. In conclusion, the Earth and the study of cannot be exhausted as every natural occurrence provides a new puzzle to be solved.
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According to Townend and Zoback (2004) the San Andreas Fault (SAF) region has been noted for its possession of stress orientations in addition to the lack of a distinct heat flow anomaly at the trace of the fault. These findings indicate that there are average shear tractions that are less than 20-25 MPa in the seismogenic upper crust. Oftentimes, shear tractions measure approximately 5 times greater than in the SAF. Due to the presence of high
Kathryn Schulz has provided insight of the dangers of the Cascadia Subduction Zone and the lack of our countries preparedness. Seismologist has detected and proven probability of an enormous earthquake and/or tsunami that is over due to take place along the western coast line and yet the lack of preparedness is evident. Thousands of lives will be lost due to unpreparedness.
In recorded history, there have been 151 earthquakes in Nevada that were a magnitude of 3.5 or higher. As previously mentioned, the mountain ranges of Nevada are typically bound on one side or the other by a fault. There are quaternary faults that range in ages from less than 150 years to around 1.8 million years in existence. The property damage in Nevada from earthquakes was .2 million dollars between 1196 and 2014 based on information from department of energy for the state. As we studied in our textbook, earthquakes can by a number of things, such as shifting faults, or volcanic
Southern California is nestled between the Pacific Plate and the North American Plate. One of the most famous faults talked about in recent times, is the San Andreas fault which runs through Palmdale, San Bernadino, and Palm Springs. And as you can see by Figure 2, The Elsinore fault runs more closely in my direction as it runs through Los Angeles. A more in depth, and upclose search will show you that near the area of Mission Hills, there are three faults. There is the Santa Susana Fault that runs through Granada Hills and Los Angeles, all the way through part of the San Fernando Fault Zone. Mission Hills Fault can be seen further south running through part of Northridge and eventually reaches a connecting point with the San Fernando Fault
Fault. As I researched, the reality of the potential effects to our state came into light. To be perfectly honest, I don’t think I had ever even heard of the New Madrid Fault. It could have been mentioned in my 7th grade Earth Science class, but that’s been a few years ago. As my internet investigation into the New Madrid Fault unfurled, the predictions of a massive earthquake happening in the region within the next 50 years was mentioned a number of times. So I thought I would begin my research into the history of the New Madrid Fault in regards to our state. Which lead me to think is our state prepared for an earthquake? What would the response be, not only from an emergency management point of view, but I will draw from my experience as a member of the Air National Guard.
One of the most significant earthquakes to hit the San Fernando Valley in the past was the 1971 San Fernando/ Sylmar earthquake. On February 9, 1971 at about 6 o’clock the cities of San Fernando and Sylmar experienced an earthquake that ruptured along the Sierra Madre Fault Zone (Oakeshott, Gordon B). The epicenter of this earthquake was reported to be in the San Gabriel Valley Mountains above the valley. The citizens of both cities felt tremendous shaking. The magnitude of the earthquake was measured as a 6.6 on the Richter scale and the shaking had the intensity of a level 11 (extreme) on the Modified Mercalli system (U.S. Geological Survey). The shaking of this 6.6 magnitude earthquake lasted about 12 seconds with a very strong ground motion. The source of this faulting was located about five miles to the north of the San Fernando valley. The surface faulting of this earthquake was reported to be seen along the surface of the San Fernando fault zone from a point south of Sylmar, the faulting stretched 6 miles more as far as east to the little Tujunga Canyon, also more surface faulting was reported more east as well. In total the maximum surface rupture was 12 miles and the amount of slip was about 6 feet (U.S. Geological Survey). The type of fault scientist label this earthquake to be was an oblique-slip or also known as a thrust. The depth of this earthquake was 13km (8.1 mi) and the peak acceleration was when it reached the Pacoima dam having the speed of 1.25g (U.S.
The Hayward Fault stretching beneath a few major cities in California has not shifted too far in the last 150 years, a shift that used to be evident on a street corner of Rose and Prospect Streets. A no longer aligned curb was a perfect reminder of the forces working beneath the citizens of Hayward (although the city decided to realign it once more), and the forces that could soon act again. This fault was found to produce a large earthquake roughly every 160 years, give or take 80 years. Any earthquake, especially of the magnitude predicted to occur (7.0), would be devastating as this fault runs through major urban areas. Unlike the last time it shifted, geologists predict that the next earthquake will stretch for 52 miles
My house is in San Jose, but is not located near a fault line, nor is also not on top of one. My house is four miles away from the Hayward fault, and about six miles away from the Calaveras fault. The Hayward fault has an twenty-seven percent, well the Calaveras fault has a eleven percent probability of having an earthquake in the next thirty years. For both the Hayward, and Calaveras fault earthquake will cause the MMI of seven, where I live causing intense shaking. The liquefaction susceptibility is moderate for my household, and landslides are not a problem since I am not on a slope, nor live at the base of one. As for Tsunami evacuation I am not warned to leave, but I still want to go to higher ground. Flood zones are closer to me, but
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 Andreas Fault is one of the most widely studied faults in the world. Scientists use an array of methods in collecting data and providing analysis of fault characteristics both past and present. Presently there are many differing hypothesis and models used to describe crustal movements and deformation within the Pacific and North American plate boundary. Historical earthquakes along this fault have proven to be rather large and devastating. This is important since the San Andreas Fault runs along many highly populated areas throughout Northern and Southern California. Through further research and analysis of this fault system scientists hope to solve
Earthquake Hazards occur when there are adverse effects on human activities. This can include surface faulting, ground shaking and liquefaction. In this essay I will be discussing the factors that affect earthquakes, whether human such as population density, urbanisation and earthquake mitigation or physical such as liquefaction, magnitude, landslides and proximity to the focus.
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.
What is ambition? Ambition is described as eager for success, power or fame. For Macbeth. Ambition was what drove him to become great, it forced him to change his nature towards evil. At the beginning of the play, Macbeth was portrayed as a courageous soldier who fought for his King without mercy. But once the witches planted the seeds of greater things and Lady Macbeth fuelled his ambition, which lead him to become greedy and power hungry.