The Force and Effects of the 1960 Valdivia Earthquake

The New Madrid Seismic Zone has remained relatively quiet in the last 2000 years, with the largest earthquake only being rated a 6.3 on the richter scale, occurring in 1895. Since 1974, seismometers have been utilized to capture earthquakes that are too small to notice, known as microearthquakes. These microearthquakes have been recorded in numbers greater than 4,000 since 1975. These shocks were first thought to be aftershocks of the earthquakes that occurred 165 years ago, but with the exponential amount of recurrence, there is something rumbling deep in the earth's crust. Clearly, the New Madrid Seismic Zone is anything but quiet. The candid truth is it is not a matter of if , but when. The Seismic Zone is long overdue for an earthquake. Susan Hough, a seismologist of the United States Geological Survey told NPR ,that “Even though we can't predict earthquakes, we can predict the rates of aftershocks over time. The frequency of aftershocks - smaller quakes that follow the big earthquake - decreases with time, known in seismology as Omori's Law. And in the New Madrid Seismic Zone, the aftershocks aren't following Omori's Law." So will America experience another 1811 quake? Although time will tell, we better

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 Valdivia Earthquake occurred on the 22nd of May 1960 in Valdivia, Chile. It is the most powerful earthquake ever recorded with a magnitude of 9.5. The earthquake resulted in many natural disasters not only in other parts of Chile but in other countries as well.

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.

Large magnitude earthquakes occur on plate boundaries and can produce hazards such as movement along faults, landslides, and tsunamis. In North America, the western coast is an active margin, meaning that it is home to earthquakes and

Seismologists cannot predict when an earthquake will occur but that can assume why and how it will happen. Geologist have confirmed is knowing where in the world they are likely to happen. They have good estimates of the expected long-term rates of

This is the largest earthquake that has ever been recorded in Japan. (November 4, 1952, Kamchatka Peninsula, Russia, Magnitude 9.0) This was the first ever earthquake that was recorded magnitude of 9.0 or higher. (February 27, 2010,Magnitude 8.8) The 2010 Chile earthquake ranks as the sixth largest earthquake to have ever been recorded. Recorded at a magnitude of 8.8, the shaking was felt at an intense level across six regions of that felt the earthquake. Several coastal towns in south-central Chile were damaged by the tsunami that was triggered by the

The Largest Earthquake Was In Valdivia, Chile In May, 1960. It Had A Magnitude Of 9.5. It Started Beneath The Pacific Ocean. The Motions Of This Earthquake Destroyed Thousands Of Land Structures. Most Damage And Deaths Were From The Tsunamis Formed By The Quake. They Pushed Buildings Away From Their General Location!!!

Breaking news on Fox today, It is May 20,1960 and the ground is shaking. Scientists are saying one of the biggest quakes in the 20th century now happening in Valdivia located in southern Chile. The magnitude, how vast the size of something is, in this case the earthquake was 9.5 and great damage is reported. Now, we are reporting from the remains of the city and are not sure if there is going to be an aftershock,which is an earthquake that occurs after a larger earthquake in the same area. I am your news reporter Dasha Krumer and today I am with Shreya Srihari an expert on earthquakes a seismologist.

Violent shocks occurred which lasted some 45 to 60 seconds. The earthquake was felt from Oregon to Los Angeles and as far as central Nevada. The Earthquake ranks as one of the worst natural disasters in US history and one of the most significant earthquakes of all time. It affected 375,000 square miles. Most of the earthquake was absorbed by the pacific ocean.

On Friday March 11th, 2011 at 2:46 pm, the fifth largest earthquake recorded since 1900 with a magnitude of 9.0, 1.7 Richter scale points greater than the devastating Vancouver Island earthquake of 1946, struck the coast of Japan, 231 miles northeast of Tokyo1, causing a devastating regional and global catastrophe.

Magnitude of the earthquake was 9.5 out of 10, with a rupture zone of about 1,000 km. About 1,655 people were killed, 3,000 wounded, 2 million homeless, and about $550 million lost in southern Chile. The volcano actually triggered a tsunami that killed 61 people and caused extensive damage in Hawaii, the Philippines, Easter Island, Samoa, and California. Residual damage caused landslides and volcanic eruptions after two days and lasted for several weeks. There were four foreshocks with magnitudes of seven or upper, five aftershocks with seven or upper levels, and some volcanoes. The first tremors and aftershocks began on May 21, 1960 and lasted until November 1, 2016.

Have you ever felt the strongest earthquake happen? Well, the people in Chile had. An earthquake is a sudden and violent shaking of the ground, causing great damage. The earthquake’s magnitude reached up to 9.5; a magnitude is the great size or extent of something. This earthquake was the strongest and most powerful earthquake to ever exist, and to be fully recorded.

Before the quake hit the day before, there were a series of shocks that tipped off to people of Chile that something was coming. The day that the earthquake hit, it was a rated a 9.5 on the Richter Scale. The intensity of this caused thousands of buildings to be destroyed and 2,000,000 people left homeless. The population of the city had greatly decreased and the city also needed to pay for the damage to be repaired. It would be 800 million American dollars to complete the cleanup and repairs of the city almost completely. This earthquake was called “The Great Chilean Earthquake” because of the total destruction and because of the expansion of it where other countries received the aftershocks and effects. Japan had received a tsunami a day later, killing 138 people and leaving 1600 homes destroyed. Japan was left to pay 34 million dollars for damage

Earthquakes, also referred to as temblors, are one of the world’s most powerful occurrences. The Earth has four layers: the crust, mantle, inner and outer core. Earthquakes occur in the crust and upper mantle (Refer to Figure 1). The mantle is made up of semi-molten rock called magma. The upper mantle rock is hard. The crust is the outer layer of the earth. Together, the crust and upper mantle make up the lithosphere. The lithosphere is 20-50 km thick and is cracked. The asthenosphere sits below the lithosphere. The lithosphere consists of tectonic plates (lithospheric plates). Tectonic plates is the theory that the Earth’s outer shell is divided by slabs of solid rock. When these two tectonic plates make frictional contact the outcome may be deadly.