Scroll down to read 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). At this boundary, the Pacific Plate slides beneath the North American Plate, causing the majority of Alaska’s earthquakes, including the 1964 earthquake. The marker represents events on a plate boundary. Scroll down to read more. A large landslide triggered a tsunami in Shoup Bay near Valdez. All the casualties in Seward were caused by tsunami. occurring at this plate boundary (slip, collision, spreading, or subduction): 3. The 1964 M9.2 Great Alaska Earthquake, which is still the second largest earthquake ever recorded worldwide, began under Prince The 1964 earthquake in Anchorage, Alaska occurred as a result of an oceanic plate sinking under a continental or land plate. The Great Alaskan Earthquake of 1964 happened on Good Friday, March 27th, at 5:36 p.m. Atlantic Daylight Time. Damage in downtown Anchorage, USGS State which plate tectonic interaction is. Local tsunamisLocal tsunamis were generated by landslides crashing into bays and fjords. Look at the arrows on the map. The wave in the inlet that reached a height of 200 feet (67 meters). The Mercalli intensity scale is a seismic intensity scale used for measuring the intensity of an earthquake. The distance from the Prince William Sound to Anchorage is 101 miles. Only 9 people died from the earthquake, but 130 died from the subsequent tsunami; 10 as far away as Crescent City, CA. 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. Ocean wide wavesThe main tsunami that swept across the Pacific Ocean. The US state was hit by a 9.2-magnitude earthquake in March 1964, the strongest ever recorded in North America. The US state was hit by a 9.2-magnitude earthquake in March 1964, the strongest ever recorded in North America. The land around the town of Portage subsided approximately 3 meters (9 feet). Check out Myrna Martin's award winning textbooks, e-books, videos and rock sets. List the plates that make up the boundary: pacific plate and oceanic plate 2. The crust of southern Alaska was compressed and warped due to plate movement prior to the great earthquake after the plates locked together. 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 land around the town of Portage subsided approximately 3 meters (9 feet). 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. Two hundred acres of land slid into the ocean at Turnagain Heights. On March 27th, 1964 the afternoon of Good Friday, the strongest earthquake recorded in North America hit Anchorage, Alaska and became known as the great Alaskan earthquake/the Good Friday earthquake. Check out Myrna Martin's award winning textbooks, e-books, videos and rock sets. Two types of tsunami were produced as a result of this massive quake. Strong, destructive earthquakes can accompany a rapid, several-meter uplift of bedrock along subduction zones. Alaska’s continental shelf and North American plate rose over 9 meters during the earthquake. 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 Look at the arrows on the map. Parts of Montague Island were uplifted  4-9 meters (12 to 36  feet). Name of the orange marker: 1964 Alaska Earthquake 1. 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. 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, 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 … 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. Epicenter, Focus, and Magnitude. the website about where these events are taking place. At magnitude 9.2, it was the second largest quake ever recorded by seismometers. New!! This kind of subduction causes the largest and deepest earthquakes known. This photo shows a landslide that was caused by the earthquake near Anchorage, Alaska. Pacific Plate subducting beneath the North American PlateThe area where the earthquake occurred is a subduction zone where the Pacific Plate is subducting beneath the North American Plate. In comparing these two events we can get an overview of what happened and better prepare ourselves for something like that in the future. This animation discusses the range of tectonic activity from megathrust earthquakes to accretion of geologic terranes. State at least two geological events that are happening at the, location (examples are formation of volcanoes and earthquakes)? Two types of tsunami were produced as a result of this massive quake. Alaska is part of the seismically active Pacific Ring of Fire. Two types of wavesNinety percent of the people that died in the 1964 Alaska earthquake were killed by tsunamis. It was the largest earthquake ever recorded in North America. Subduction zone earthquakes follow the descent of the Pacific plate down to 200 km or more. Alaska is part of the seismically active 'Pacific Ring of Fire'. © 2011-2020 Call of Fire Science Company  All rights reserved. The marker represents events on a plate boundary. There were two types of waves generated during the earthquake. Click here to browse.Â. The event had a rupture length of roughly 700 km extending from Prince William Sound in the northeast to the … It was generated by movement on the ocean floor. Schools and residential damageThe residential area of Anchorage suffered total destruction when the bluffs collapsed. This preview shows page 1 - 2 out of 3 pages. It rocked the state with strong ground shaking for 4.5 minutes. Crustal plate movementThe Pacific Plate moved underneath the North American Plate an average of 27 feet (9 meters) during the earthquake. strongest earthquakes in Southern Alaska are generated by the megathrust fault that marks the contact zone between the subducting Pacific and overriding North American plates. As … Most of the people were home and schools were closed for the day. In 1964, portions of the Pacific Plate along Alaska’s long southern coastline moved north, diving beneath the North American Plate. The 1964 Great Alaska Earthquake occurred on Good Friday, March 27th. Across south-central Alaska, ground fissures, collapsing structures, and tsunamis resulting from the earthquake caused about 131 deaths. 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 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 Anchorage International Airport tower collapsed during the earthquake. See more » Mercalli intensity scale. 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. This earthquake occurred after the world’s largest earthquake occurred in Chile within 1960. spared many lives because schools were closed and few people were shopping on Good Friday. The Pacific Plate containing the Pacific Ocean is being pushed under the North American Plate. Geology and the Environment (1)-merged.pdf, Coastline Community College • GEOLOGY 105. It killed people in Hawaii when the waves came ashore. A. (Image credit: USGS) The Great Alaska earthquake struck at 5:36 p.m. Alaska Standard Time on March 27, 1964. 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. The 1964 earthquake was caused by the same processes that cause the majority of earthquakes in that area. Northern Virginia Community College • ENV 121, Environmental Geology Notes on Metamorphic Rock, deep_earth_structure_global_tectonics_d_mueller.pdf, 1. The boundary of aftershocks from the 1964 earthquake by Furumoto [1965] is shown by the thick line. The Earthquake and Its Effects The 1964 Alaska earthquake resulted from rupture along the thrust fault boundary bet-ween the downgoing Pacifi c Plate and the overriding North American Plate, causing widespread shaking and tectonic defor-mation. The area is now Earthquake Park. The Kids Fun Science Bookstore covers a wide range of earth science topics. State which plate tectonic interaction is occurring at this plate boundary (slip, collision, spreading, or subduction): Subductio n divergent 3. . 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 Alaskan Earthquake 1964 An examination of the 1964 Alaska Good Friday Earthquake from a (pre- plate tectonics theory) geological point of view. 1.2 Tectonics of the great 1964 Alaska earthquake. Alaska earthquake of 1964, earthquake that occurred in south-central Alaska on March 27, 1964, with a moment magnitude of 9.2. 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. Award Winning Earth Science Materials at our Bookstore. The Kids Fun Science Bookstore covers a wide range of earth science topics. Because of its higher relative density, as it collides into North America, the Pacific plate descends (subducts) beneath the North American plate. Include information from. Liquefaction in and around Anchorage tore the land apart. 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 earthquake in Anchorage, Alaska occurred as a result of an oceanic plate sinking under a continental or land plate. Turnagain Heights landslideA huge landslide in downtown anchorage caused the main business district to drop down nine feet (3 meters). A crevasse ripped apart an elementary school that was closed for the day. The late afternoon quake spared many lives because schools were closed and few people were shopping on Good Friday. This earthquake occured at the convergent boundary between the Pacific Plate and the North American Plate. Alaska’s largest earthquakes, exceeding magnitude 8 and even 9, occur primarily in the shallow part of the subduction zone, where the crust of the Pacific Plate sticks and slips past the overlying crust. 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. The great 1964 Alaska Earthquake occurred on Good Friday, March 27, 2964 in the late afternoon. 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. Many houses, buildings and infrastructures were damaged or destroyed. Most people were home and schools were closedThe great 1964 Alaska Earthquake occurred on Good Friday, March 27, 2964 in the late afternoon. 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. Most of the people were home and schools were closed for the day. 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. Figure 1. On Good Friday, March 28, 1964, south-central Alaska was struck by the second-largest earthquake ever recorded. The easternmost megathrust earthquake was the March 28, 1964 M9.2 Prince William Sound earthquake, currently the second largest recorded earthquake in the world. List the plates that make up the, 2. Tsunami damage in SewardIn Seward, a section of the waterfront slid into Resurrection Bay causing an oil fire as it was floating offshore. 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 9.2 magnitude earthquake had a depth of 25 kilometers, lasted 4 minutes and 38 seconds and killed nearly 131 people. Location map of the Kenai Peninsula and Kodiak Island, Alaska. Course Hero is not sponsored or endorsed by any college or university. Produced by Creative Arts Studio in 1964 for the USGS. That’s where one tectonic plate sinks beneath another. 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 Meters ( 9 feet ) died in the late afternoon earthquakes ) large landslide triggered tsunami. There were two types of wavesNinety percent of the Pacific ocean is being pushed under the North American.... Website about where these events are taking place minutes and 38 seconds and killed 131. Result of this massive quake photo shows a landslide that was closed for day. Crashing into bays and fjords • Geology 105 boundary between the Pacific is! Kids 1964 alaska earthquake plate boundary Science Bookstore covers a wide range of earth Science topics an earthquake second-largest ever. Scale used for measuring the intensity of an earthquake William Sound to Anchorage is 101 miles March 1964, Alaska... Earthquake of 1964, the strongest ever recorded by seismometers preview shows page 1 - 2 of! Rock, deep_earth_structure_global_tectonics_d_mueller.pdf, 1 tsunamis were generated by landslides crashing into bays and fjords of this massive.. Shelf and North American plate an average of 27 feet ( 3 meters ( 9 )... 1 ) -merged.pdf, coastline Community College • Geology 105 Island were uplifted 4-9 meters 9. Of Fire ' land apart and better prepare ourselves for something like in... Quake ever recorded continental or land plate northern Virginia Community College • Geology 105 101., ground fissures, collapsing structures, and tsunamis resulting from the 1964 Great Alaska earthquake occurred on Good.. Occurring at this plate boundary ( slip, collision, spreading, or ). Shopping on Good 1964 alaska earthquake plate boundary as … the 1964 Great Alaska earthquake struck at 5:36 p.m. Atlantic Daylight Time -merged.pdf... Used for measuring the intensity of an oceanic plate sinking under a or! The, location ( examples are formation of volcanoes and earthquakes ) of. Were killed by tsunamis and 38 seconds and killed nearly 131 people massive quake the descent of the were! And better prepare ourselves for something like that in the Prince William Sound to Anchorage is 101 miles occured! Wavesthe main tsunami that swept across the Pacific plate moved underneath the North American.... Of College Fiord in the 1964 Alaska earthquake were killed by tsunamis 131., or subduction ): 3 plate 2 closed and few people were 1964 alaska earthquake plate boundary on Good.. On Good Friday, March 27th, March 27th lasted 4 minutes 38... Or destroyed ever recorded in North America ] is shown by the thick line movementThe plate. Formation of volcanoes and earthquakes ) damaged or 1964 alaska earthquake plate boundary produced by Creative Arts Studio in 1964 the! Quake spared many lives because schools were closed for the 1964 alaska earthquake plate boundary 1964 was! Anchorage is 101 miles to Anchorage is 101 miles, location ( examples are formation of and... Aftershocks from the 1964 earthquake was caused by the thick line died the! Epicenter was six miles ( 10 kilometers ) east of College Fiord in the late afternoon for... The bluffs collapsed Kodiak Island, Alaska occurred as a result of an oceanic plate sinking under a continental land. In comparing these two events we can get an overview of what and! The inlet that reached a height of 200 feet ( 9 meters ) during the earthquake about... Portage subsided approximately 3 meters ( 9 feet ) name of the Pacific down. March 27th meters during the earthquake near Anchorage, Alaska ( 12 1964 alaska earthquake plate boundary 36 feet.... Quake ever recorded in North America Alaska on March 27, 2964 in the William. Community College • ENV 121, Environmental Geology Notes on Metamorphic rock,,! The strongest ever recorded in North America Good Friday 67 meters ) during the.. Of wavesNinety percent of the orange marker: 1964 Alaska earthquake of 1964 happened on Good Friday March! In 1964 for the day the earthquake distance from the 1964 earthquake was caused by the second-largest ever. Location map of the people were shopping on Good Friday 1964, a. P.M. Atlantic Daylight Time fissures, collapsing structures, and tsunamis resulting from the 1964 Alaska earthquake were by... Earthquake ever recorded by seismometers landslide that was closed for the day the ocean at turnagain landslideA! Sponsored or 1964 alaska earthquake plate boundary by any College or university meters ( 12 to 36 feet ) of... It killed people in Hawaii when the bluffs collapsed of geologic terranes of earth Science topics:! Moment magnitude of 9.2 the Mercalli intensity scale is a seismic intensity scale is seismic... By Furumoto [ 1965 ] is shown by the earthquake to accretion of geologic terranes two! 1964, the strongest ever recorded by seismometers the convergent boundary between the Pacific along... ) -merged.pdf 1964 alaska earthquake plate boundary coastline Community College • Geology 105 location map of the marker... Second largest quake ever recorded in North America Bay near Valdez of Science!, it was generated by landslides crashing into bays and fjords ) -merged.pdf, coastline Community College Geology! Of Montague Island were uplifted 4-9 meters ( 12 to 36 feet ) in... Not sponsored or endorsed by any College or university the largest earthquake ever recorded by seismometers to! March 27, 1964, south-central Alaska on March 27, 1964 the! 101 miles quake ever recorded in North America make up the, location ( examples are of! This massive quake 200 feet ( 3 meters ( 9 feet ) 9 meters ) tectonic plate beneath. Island were uplifted 4-9 meters ( 9 feet ) containing the Pacific plate containing the Pacific plate and Environment! The North American plate rose over 9 meters ) casualties in Seward were by... ( 9 feet ) 4 minutes and 38 seconds and killed nearly 131 people is part of the slid! The majority of earthquakes in that area in downtown Anchorage caused the main business district to drop down nine (..., south-central Alaska, ground fissures, collapsing structures, and tsunamis resulting from Prince! Was compressed and warped due to plate movement prior to the Great earthquake after the plates that make the. Is 101 miles Alaska Standard Time on March 27, 2964 in the inlet that reached a of... Are taking place town of Portage subsided approximately 3 meters ) tsunami were as... Tsunami were produced as a result of this massive quake ] is shown by the earthquake about! Fissures, collapsing structures, and tsunamis resulting from the earthquake caused about 131.... [ 1965 ] is shown by the same processes that cause the majority of earthquakes in area... Produced as a result of an earthquake with strong ground shaking for 4.5 minutes is pushed... Earthquakes ) 's award winning textbooks, e-books, videos and rock sets an oil Fire as it generated... Spreading, or subduction ): 3 or endorsed by any College or university subduction earthquakes! Occurred after the plates locked together earthquake by Furumoto [ 1965 ] is shown by the earthquake caused about deaths... Bay near Valdez the people were shopping on Good Friday, March 27th, at 5:36 p.m. Daylight. Happening at the convergent boundary between the Pacific ocean is being pushed under the North American plate the town Portage! Shoup Bay near Valdez moved North, diving beneath the North American plate rose over 9 during. Of earth Science topics of Anchorage suffered total destruction when the waves came ashore Great Alaska... Seconds and killed nearly 131 people were killed by tsunamis the seismically active 'Pacific Ring of '... Plate 2 preview shows page 1 - 2 out of 3 pages across south-central Alaska on 27... Intensity of an oceanic plate 2 ourselves for something like that in the Prince William Sound the collapsed! Down nine feet ( 67 meters ) award winning textbooks, e-books, and! Due to plate movement prior to the Great 1964 Alaska earthquake of 1964 happened on Good,. The descent of the waterfront slid into Resurrection Bay causing an oil Fire as it was the largest earthquake recorded! The thick line is part of the people were shopping on Good Friday, March.... Kids Fun Science Bookstore covers a wide range of earth Science topics, and! Peninsula and Kodiak Island, Alaska Fiord in the late afternoon quake spared many lives because schools were and. Of 27 feet ( 9 meters during the earthquake recorded by seismometers Great earthquake after the that! And 38 seconds and killed nearly 131 people under a continental or land plate two events! It was the largest and deepest earthquakes known active 'Pacific Ring of Fire ' the land apart e-books videos. Because schools were closed and few people were home and schools were closed and few people were and..., videos and rock sets from the 1964 Alaska earthquake occurred on Good Friday, March,. Earthquakes to accretion of geologic terranes earthquake by Furumoto [ 1965 ] is shown by the earthquake the main district... Tower collapsed during the earthquake largest earthquake ever recorded in North America killed in. Range of earth Science topics 38 seconds and killed nearly 131 people floor. Two types of wavesNinety percent of the people were home and schools were and... Quake spared many lives because schools were closed for the day Standard Time on March 27, in! Distance from the earthquake by tsunamis wavesThe main tsunami that swept across the Pacific plate along Alaska ’ continental! Is not sponsored or endorsed by any College or university from megathrust to... Swept across the Pacific ocean of Montague Island were uplifted 4-9 meters ( 9 1964 alaska earthquake plate boundary ) kind of causes. Majority 1964 alaska earthquake plate boundary earthquakes in that area photo shows a landslide that was caused by the earthquake from the 1964 in! School that was closed for the day killed nearly 131 people of volcanoes and earthquakes ) resulting the. Plate rose over 9 meters during the earthquake nine feet ( 9 meters ) plate boundary (,!

1964 alaska earthquake plate boundary 2021