What is the fastest earthquake in the world?

9.5 Magnitude - near Valdivia, Chile World's largest earthquake - tsunami map: The Chilean earthquake produced a powerful tsunami that traveled at a speed of about 200 miles per hour across the Pacific Ocean.

geology.com - World's Largest Recorded Earthquake - Geology.com

How many pounds of beans do you need to survive a year?

They digest slowly satisfying hunger for a long time. Beans are perfect for longer term storage and will store up to 30 years, if stored...

Last updated Dec 7, 2018

What makes an amazing person?

Positive Attitude – Meet each new day with a positive attitude. Learn to see the good in every situation. Treat each new person you engage with as...

Last updated Feb 6, 2019

Promotion

Home » Records » World's Largest Earthquake World's Largest Recorded Earthquake

9.5 Magnitude - May 22, 1960 near Valdivia, Chile

"The Great Chilean Earthquake" The world's largest earthquake with an instrumentally documented magnitude occurred on May 22, 1960 near Valdivia, in southern Chile. It was assigned a magnitude of 9.5 by the United States Geological Survey. It is referred to as the "Great Chilean Earthquake" and the "1960 Valdivia Earthquake." The United States Geological Survey reports this event as the "largest earthquake of the 20th Century." Other earthquakes in recorded history may have been larger; however, this is the largest earthquake that has occurred since accurate estimates of magnitude became possible in the early 1900s. Local Damage from Ground Motion and Tsunamis The earthquake occurred beneath the Pacific Ocean off the coast of Chile. Ground motion from this earthquake destroyed or damaged thousands of buildings. The Chilean government estimated that about 2,000,000 people were left homeless. It was fortunate that the earthquake occurred in the middle of the afternoon and was preceded by a powerful foreshock. After the foreshock, many people were frightened and left their buildings. That placed them outside when the main earthquake occurred. Most of the damage and deaths were caused by a series of tsunamis that were generated by the earthquake. These waves swept over coastal areas moments after the earthquake occurred. They pushed buildings from their foundations and drowned many people. There are many different casualty estimates for this earthquake. They range from a low of 490 to a high of "approximately 6000." Most of the casualties were caused by tsunamis in Chile and from ground motion. However, people as far away as the Philippines were killed by this event. The costs of the damage were estimated to have been between $400 and $800 million in 1960 dollars, which would be about $3 to $6 billion today, adjusted for inflation. Tsunami Damage This is one of the few earthquakes that has killed large numbers of people at distant locations. Tsunamis generated by the earthquake traveled across the Pacific Ocean at a speed of over 200 miles per hour. Changes in sea level were noticed all around the Pacific Ocean basin. Fifteen hours after the earthquake, a tsunami with a runup of 35 feet swept over coastal areas of Hawaii. Many shoreline facilities and buildings near coastal areas were destroyed. Near Hilo, Hawaii, 61 people were reported killed by the waves. In California, many small boats were damaged as the waves swept through marinas. At Crescent City, a wave had a runup of about 5 feet and caused damage to shoreline structures and small boats. Waves up to 18 feet high hit the island of Honshu, Japan about 22 hours after the earthquake. There it destroyed more than 1600 homes and left 185 people dead or missing. Another 32 people were killed in the Philippines about 24 hours after the earthquake. Damage also occurred on Easter Island and Samoa. Subsidence and Uplift The United States Geological Survey reports that there was about five feet of subsidence along the Chilean coast from the south end of the Arauco Peninsula to Quellon on Chiloe Island. This left a number of buildings below water level at high tide. As much as ten feet of uplift occurred at Isla Guafo. ADVERTISEMENT

What do I need to live?

These are humans' six basic needs in the 21st century Food. Food is the basic source of energy and one of the most immediate requirements for day...

Last updated May 28, 2020

What are 3 living things need to survive?

Most living things need food, water, light, temperatures within certain limits, and air. Living things have a variety of characteristics that are...

Last updated Mar 15, 2020

Promotion

Tectonics This was a megathrust earthquake that occurred at a depth of about 20 miles, where the Nazca Plate is subducting beneath the South American Plate. It produced a 500-mile-long rupture zone extending from Talca, Chile to the Chiloe Archipelago. Numerous large earthquakes have occurred in this area before and after the May 22, 1960 event.

World's Twelve Largest Earthquakes

Includes all measured earthquakes since 1900 Magnitude Location Date 9.5 Chile 05/22/1960 9.2 Alaska 03/28/1964 9.1 Off the coast of Northern Sumatra 12/26/2004 9.1 Honshu, Japan 03/11/2011 9.0 Kamchatka 11/04/1952 8.8 Off the coast of Chile 02/27/2010 8.8 Off the coast of Ecuador 01/31/1906 8.7 Rat Islands, Alaska 02/04/1965 8.6 Tibet 08/15/1950 8.6 Off the coast of Northern Sumatra 04/11/2012 8.6 Northern Sumatra 03/28/2005 8.6 Andreanof Islands, Alaska 03/09/1957 Data from the United States Geological Survey. Foreshocks The earthquake was preceded by four foreshocks greater than magnitude 7.0. The largest was a magnitude 7.9 earthquake one day before that caused significant damage in the Concepcion area. Damage in Hawaii (Quoted from: Tsunami in Hawaii. Lander, James F., and Lockridge, Patricia A., 1989, in: United States Tsunamis 1690-1988: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration.) "A devastating earthquake (magnitude 8.6) off the coast of central Chile generated a tsunami affecting the entire Pacific Basin. In general the wave action along Hawaiian shores was quiet, resembling that of the tide, although it had a shorter period and a greater range. It killed 61 and seriously injured 43. ADVERTISEMENT In Hilo Bay, however, the third wave was converted into a bore that flooded inland to the 6 m contour. Nearly 240 hectares (600 acres) inland of Hilo harbor were inundated, and all the deaths and $23.5 million of the damage occurred in this area. (The estimates of damage in Hawaii vary from $75 million in Talley and Cloud (1962), to $20 million in Wall (1960). A total of about $24 million for Hawaii is given by the Hawaiian office of Civil Defense.) In nearly half of this area total destruction occurred. In the area of maximum destruction, only buildings of reinforced concrete or structural steel, and a few others sheltered by these buildings, remained standing--and even these were generally gutted. Frame buildings either were crushed or floated nearly to the limits of flooding. Dozens of automobiles were wrecked; a 10-metric-ton tractor in a showroom was swept away; heavy machinery, mill rollers, and metal stocks were strewn about. Rocks weighing as much as 20 metric tons were plucked from a sea wall and carried as far as 180 m inland. Damage elsewhere on the Island of Hawaii was restricted to the west and southern coasts, where about a dozen buildings, mostly of frame construction, were floated off their foundations, crushed, or flooded. There was half a million dollars of damage on the Kona coast alone. Six houses were destroyed at Napoopoo. On Maui the damage was concentrated in the Kahului area on the north coast. A warehouse and half a dozen houses were demolished, and other warehouses, stores, offices, and houses, and their contents were damaged. A church floated 6.1 m away from its foundation. Other buildings were damaged at Paukukalo, just outside and west of the harbor. At Spreckelsville and Paia, east of Kahului, houses were damaged, and one house at each place was demolished. Additional damage occurred at Kihei on the south coast and Lahaina on the west coast. On the island of Molokai there was some damage to houses, fish ponds, and roads, and a beachhouse was demolished on the Island of Lanai. The islands of Kauai and Oahu escaped with only minor damage. Fifty houses at Kuliouou, an eastern suburb of Honolulu, were flooded, and $250,000 in damage was done. Elsewhere on Oahu no damage was reported, even where there was inundation of areas occupied by houses. On Kauai, so far as is known, the only damage consisted of one frame building being floated off its foundation on the south coast."

geology.com - World's Largest Recorded Earthquake - Geology.com

How was Shadow born?

Character biography Within the Sonic series' fictional universe, Shadow the Hedgehog is an artificial being created by Professor Gerald Robotnik...

Last updated Jun 30, 2021

Did humans used to have 2 sleeps?

Anthropological studies suggest that sleeping in two phases used to be the norm. Centuries ago, before the industrial era, people in many parts of...

Last updated Sep 5, 2020

Promotion

What are the 3 things you currently Cannot live without?

In terms of the essentials, there are a few which can't be overlooked — air, water, food, sleep, and shelter. May 7, 2021

Last updated Jan 10, 2018

Promotion

How would you describe the pain of death?

Pain. The death of someone close to us is the most devastating experience that will ever happen to us. It can be very painful. People describe it...

Last updated Feb 20, 2019