spared many lives because schools were closed and few people were shopping on Good Friday. The Alaskan Earthquake 1964 An examination of the 1964 Alaska Good Friday Earthquake from a (pre- plate tectonics theory) geological point of view. Course Hero is not sponsored or endorsed by any college or university. The Kids Fun Science Bookstore covers a wide range of earth science topics. The land around the town of Portage subsided approximately 3 meters (9 feet). The marker represents events on a plate boundary. The area is now Earthquake Park. Northern Virginia Community College • ENV 121, Environmental Geology Notes on Metamorphic Rock, deep_earth_structure_global_tectonics_d_mueller.pdf, 1. Many houses, buildings and infrastructures were damaged or destroyed. Turnagain Heights landslideA huge landslide in downtown anchorage caused the main business district to drop down nine feet (3 meters). The 1964 Good Friday Earthquake and Tsunami, 1912 eruption of Novarupta in Katmai National Park, EcG9zAzQEdnRpZANDMDE2MF8xBHNlYwNzcg--/RV=2/RE=1606789255/RO=10/RU=, https%3a%2f%2fwww.onlyinyourstate.com%2falaska%2fmost-horrifying-natural-, disasters-ak%2f/RK=2/RS=bPQd9tJPtgcEozL6J6OvTKQJzAI-. The boundary of aftershocks from the 1964 earthquake by Furumoto [1965] is shown by the thick line. The 1964 earthquake was caused by the same processes that cause the majority of earthquakes in that area. On Good Friday, March 27, 1964, at 5:36 p.m. local time, the earth began to shake in the subduction zone in the Prince William Sound in Alaska. (Image credit: USGS) The Great Alaska earthquake struck at 5:36 p.m. Alaska Standard Time on March 27, 1964. The 9.2 magnitude earthquake had a depth of 25 kilometers, lasted 4 minutes and 38 seconds and killed nearly 131 people. See more » Mercalli intensity scale. The 1964 Great Alaska Earthquake occurred on Good Friday, March 27th. Alaskan Earthquake Video (1966) Excerpt from the TV show "The Big Picture" produced by the US Army in 1966 about the Alaska Earthquake and its tragic effects. occurring at this plate boundary (slip, collision, spreading, or subduction): 3. The great 1964 Alaska Earthquake occurred on Good Friday, March 27, 2964 in the late afternoon. Earth scientists now recognize that the 1964 Great Alaska Earthquake resulted from plate convergence: where the Pacific megathrust fault during the 1964 earthquake Plate is being overridden by the North American Plate, it descends, or subducts, into the Earth’s mantle along the Aleutian Trench. The epicenter of the earthquake was 6 miles east of the mouth of College Fiord, approximately 55 miles west of Valdez and 74 miles east of Anchorage. Alaska’s continental shelf and North American plate rose over 9 meters during the earthquake. State which plate tectonic interaction is. In comparing these two events we can get an overview of what happened and better prepare ourselves for something like that in the future. Epicenter, Focus, and Magnitude. Subduction zone earthquakes follow the descent of the Pacific plate down to 200 km or more. Produced by Creative Arts Studio in 1964 for the USGS. There were two types of waves generated during the earthquake. The Great Alaskan Earthquake of 1964 happened on Good Friday, March 27th, at 5:36 p.m. Atlantic Daylight Time. Geology and the Environment (1)-merged.pdf, Coastline Community College • GEOLOGY 105. Check out Myrna Martin's award winning textbooks, e-books, videos and rock sets. Scroll down to read more. Award Winning Earth Science Materials at our Bookstore. Alaska earthquake of 1964, earthquake that occurred in south-central Alaska on March 27, 1964, with a moment magnitude of 9.2. Alaska is part of the seismically active Pacific Ring of Fire. It killed people in Hawaii when the waves came ashore. The U.S. Geological Survey reports that: The earthquake caused rivers, lakes, and other waterways to slosh as far away as the coasts of Texas and Louisiana. 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. The earthquake rupture started approximately 25 km beneath the surface, with its epicenter about 6 miles (10 km) east of the mouth of College Fiord, Local tsunamisLocal tsunamis were generated by landslides crashing into bays and fjords. the website about where these events are taking place. This earthquake occured at the convergent boundary between the Pacific Plate and the North American Plate. The crust of southern Alaska was compressed and warped due to plate movement prior to the great earthquake after the plates locked together. The March 27, 1964, earthquake was accomp anied by crustal deformation-including warping, horizontal distortion, and faulting-over probably more than 110,000 square miles of land and sea bottom in south-central Alaska. Most of the people were home and schools were closed for the day. Location map of the Kenai Peninsula and Kodiak Island, Alaska. 1964 Alaska earthquake is mega thrust earthquake that occurred in the subduction zone that Pacific plate was subducting beneath the North American plate or along the Aleutian fault with length of 3400 kilometers. As … The Alaska- Aleutian subduction zone, at the plate boundary, is responsible for most of the earthquake activity in south-central Alaska—including the 1964 Earthquake. List the plates that make up the boundary: pacific plate and oceanic plate 2. The wave in the inlet that reached a height of 200 feet (67 meters). This animation discusses the range of tectonic activity from megathrust earthquakes to accretion of geologic terranes. Two types of tsunami were produced as a result of this massive quake. Schools and residential damageThe residential area of Anchorage suffered total destruction when the bluffs collapsed. That’s where one tectonic plate sinks beneath another. Ocean wide wavesThe main tsunami that swept across the Pacific Ocean. A. The 1964 earthquake in Anchorage, Alaska occurred as a result of an oceanic plate sinking under a continental or land plate. Most of the people were home and schools were closed for the day. It was generated by movement on the ocean floor. plates 1.docx - A Name of the orange marker 1964 Alaska Earthquake 1 The marker represents events on a plate boundary List the plates that make up the, 1. D) plate boundaries move at regular rates so the interactions across plate boundaries are predictable and regular B) stress continues to build up all the time and when it is great enough to overcome friction there will be an earthquake and then the process will start over again The megathrust boundary between the plates results in both the 4,000-km-long Aleutian Trench and in the arc of active volcanoes that lie subparallel to the trench. Only 9 people died from the earthquake, but 130 died from the subsequent tsunami; 10 as far away as Crescent City, CA. The main but not initial megathrust in the eastern part of the great 1964 Alaska M 9.2+ earthquake was actually the yak thrusting west-southwest onto the Pacific plate (Reeder, 2016; Stauder and Bollinger, 1966; Wyss and Brune, 1967). The Mercalli intensity scale is a seismic intensity scale used for measuring the intensity of an earthquake. © 2011-2020 Call of Fire Science Company  All rights reserved. On Good Friday, March 28, 1964, south-central Alaska was struck by the second-largest earthquake ever recorded. Name of the orange marker: 1964 Alaska Earthquake 1. Alaska is part of the seismically active 'Pacific Ring of Fire'. During the earthquake, an 8 0 0 k- i lo m e te r by 2 5 0 k- i lo m e te r a r e a (s e e State which plate tectonic interaction is occurring at this plate boundary (slip, collision, spreading, or subduction): Subductio n divergent 3. . State at least two geological events that are happening at the, location (examples are formation of volcanoes and earthquakes)? It was the largest earthquake ever recorded in North America. Strong, destructive earthquakes can accompany a rapid, several-meter uplift of bedrock along subduction zones. The easternmost megathrust earthquake was the March 28, 1964 M9.2 Prince William Sound earthquake, currently the second largest recorded earthquake in the world. Two types of tsunami were produced as a result of this massive quake. 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