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1964 alaska earthquake plate boundary

Location map of the Kenai Peninsula and Kodiak Island, Alaska. The Pacific Plate containing the Pacific Ocean is being pushed under the North American Plate. 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, Look at the arrows on the map. The area is now Earthquake Park. 1.2 Tectonics of the great 1964 Alaska earthquake. The 1964 Great Alaska Earthquake occurred on Good Friday, March 27th. 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. Click here to browse.Â. Most of the people were home and schools were closed for the day. Course Hero is not sponsored or endorsed by any college or university. Check out Myrna Martin's award winning textbooks, e-books, videos and rock sets. This preview shows page 1 - 2 out of 3 pages. All the casualties in Seward were caused by tsunami. 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. Produced by Creative Arts Studio in 1964 for the USGS. The M 9.2 earthquake ruptured a patch of the subduction zone that was ~500 miles long and 100–175 miles wide, producing vertical displacements over an area of about 110,039 square miles in south-central Alaska (Plafker, 1969). The 9.2 magnitude earthquake had a depth of 25 kilometers, lasted 4 minutes and 38 seconds and killed nearly 131 people. Alaska is part of the seismically active 'Pacific Ring of Fire'. Geology and the Environment (1)-merged.pdf, Coastline Community College • GEOLOGY 105. The 1964 great Alaska earthquake was the second largest earthquake recorded instrumentally, with moment magnitude, M w =9.2 (Kanamori, 1977).Surface displacements in the epicentral region suggest that beneath Prince William Sound the Pacific plate–North America interface slipped by 15–20 m or more during this event (Holdahl and Sauber, 1994, Oleskovich et al., 1999). The marker represents events on a plate boundary. On Good Friday, March 28, 1964, south-central Alaska was struck by the second-largest earthquake ever recorded. The Kids Fun Science Bookstore covers a wide range of earth science topics. 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. occurring at this plate boundary (slip, collision, spreading, or subduction): 3. Damage in downtown Anchorage, USGS The easternmost megathrust earthquake was the March 28, 1964 M9.2 Prince William Sound earthquake, currently the second largest recorded earthquake in the world. The Great Alaskan Earthquake of 1964 happened on Good Friday, March 27th, at 5:36 p.m. Atlantic Daylight Time. 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. Check out Myrna Martin's award winning textbooks, e-books, videos and rock sets. Northern Virginia Community College • ENV 121, Environmental Geology Notes on Metamorphic Rock, deep_earth_structure_global_tectonics_d_mueller.pdf, 1. The Anchorage International Airport tower collapsed during the earthquake. Strong, destructive earthquakes can accompany a rapid, several-meter uplift of bedrock along subduction zones. It released at least twice as much energy as the San Francisco earthquake of 1906 and was felt on land over an area of almost 502,000 square miles (1,300,000 square km). 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 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. Most people were home and schools were closedThe great 1964 Alaska Earthquake occurred on Good Friday, March 27, 2964 in the late afternoon. A. The distance from the Prince William Sound to Anchorage is 101 miles. The 1964 Alaskan earthquake, also known as the Great Alaskan earthquake and Good Friday earthquake, occurred at 5:36 PM AKST on Good Friday, March 27. The Alaskan Earthquake 1964 An examination of the 1964 Alaska Good Friday Earthquake from a (pre- plate tectonics theory) geological point of view. Include information from. Two types of tsunami were produced as a result of this massive quake. 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 … Two hundred acres of land slid into the ocean at Turnagain Heights. 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. spared many lives because schools were closed and few people were shopping on Good Friday. The event had a rupture length of roughly 700 km extending from Prince William Sound in the northeast to the … List the plates that make up the boundary: pacific plate and oceanic plate 2. Because of its higher relative density, as it collides into North America, the Pacific plate descends (subducts) beneath the North American plate. Tsunami damage in SewardIn Seward, a section of the waterfront slid into Resurrection Bay causing an oil fire as it was floating offshore. The crust of southern Alaska was compressed and warped due to plate movement prior to the great earthquake after the plates locked together. 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. The land around the town of Portage subsided approximately 3 meters (9 feet). © 2011-2020 Call of Fire Science Company  All rights reserved. A crevasse ripped apart an elementary school that was closed for the day. State at least two geological events that are happening at the, location (examples are formation of volcanoes and earthquakes)? State which plate tectonic interaction is. In 1964, portions of the Pacific Plate along Alaska’s long southern coastline moved north, diving beneath the North American Plate. A large landslide triggered a tsunami in Shoup Bay near Valdez. Alaska’s continental shelf and North American plate rose over 9 meters during the earthquake. Two types of tsunami were produced as a result of this massive quake. (Image credit: USGS) The Great Alaska earthquake struck at 5:36 p.m. Alaska Standard Time on March 27, 1964. Parts of Montague Island were uplifted  4-9 meters (12 to 36  feet). 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 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 website about where these events are taking place. State which plate tectonic interaction is occurring at this plate boundary (slip, collision, spreading, or subduction): Subductio n divergent 3. . The boundary of aftershocks from the 1964 earthquake by Furumoto [1965] is shown by the thick line. It was the largest earthquake ever recorded in North America. 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. Scroll down to read The Mercalli intensity scale is a seismic intensity scale used for measuring the intensity of an earthquake. There were two types of waves generated during the earthquake. The wave in the inlet that reached a height of 200 feet (67 meters). This earthquake occured at the convergent boundary between the Pacific Plate and the North American Plate. Award Winning Earth Science Materials at our Bookstore. The epicenter was six miles (10 kilometers) east of College Fiord in the Prince William Sound. Off the coast of Alaska lies the Aleutian Subduction Zone –a 2,500 mile long convergent plate boundary where the Pacific Plate subducts under the North American Plate at a rate of 6–7 cm/yr. As … The marker represents events on a plate boundary. Were shopping on Good Friday, March 27th earthquakes to accretion of geologic.... People were home and schools were closed for the day list the plates make... Structures, and tsunamis resulting from the earthquake for measuring the intensity of an oceanic sinking. ( 9 feet ) the future largest earthquake ever recorded in North.... 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