The fault responsible was the Aleutian Megathrust, a reverse fault caused by a compressional force. On Good Friday too, “the earth shook and the rocks split” (Matthew 27:51). The magnitude 9.2 earthquake, which resulted in 131 deaths, was centered in Prince William Sound off the coast of South Central Alaska… The magnitude, exact location of the epicenter, and depth of the quake are likely to be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report. At the order of the U.S. Defense Department, the Alaska National Guard founded the Alaska Division of Emergency Services to respond to any future disasters.[28]. After being nearly totally destroyed by the 1964 Good Friday Earthquake and Tsunami, the community members in this special place strongly stood together and completely rebuilt from the ground up. [4] Tsunamis also caused damage in Hawaii and Japan. Its epicenter was 6-mi east of the entrance to the College Fjord, 78-mi east of Anchorage and at a 15-mi depth, making it the second l… There were no immediate reports of damage or injuries, and the Los Angeles Fire Department warned residents to prepare for aftershocks. Located in Prince William Sound, the CDP consists of the Chugach Alutiiq village of Chenega Bay, which was established only after the Good Friday earthquake destroyed the original community on Chenega Island to the north. March 27, 1964: It was a typical late afternoon in Alaska. Minor damage to boats occurred as far south as Los Angeles. [22], Alaska had never experienced a major disaster in a highly populated area before, and had very limited resources for dealing with the effects of such an event. Soil liquefaction, fissures, landslides, and other ground failures caused major structural damage in several communities and much damage to property. [30] Chance provided breaking news of the catastrophic events that continued to develop following the magnitude 9.2 earthquake, and she served as the voice of the public safety office, coordinating response efforts, connecting available resources to needs around the community, disseminating information about shelters and prepared food rations, passing messages of well-being between loved ones, and helping to reunite families. Color Footage of aftermath 1964 Alaskan "Good Friday" Earthquake. In 1964, the second-largest earthquake ever recorded—the Mw 9.2 Good Friday earthquake of 1964, formally named the 1964 Great Alaska Earthquake—struck Alaska. The Good Friday Earthquake was the most destructive natural disaster in Alaska, and was the most powerful recorded earthquake in U.S. history. The earthquake caused the Cold-War era ballistic missile detection radar of Clear Air Force Station to go offline for six minutes, the only unscheduled interruption in its operational history. This is a PowerPoint presentation about the 1964 earthquake that hit Alaska on Good Friday, March 27th, at 5:37 pm. https://archives.consortiumlibrary.org/collections/specialcollections/hmc-0051/. Ocean floor shifts created large tsunamis (up to 220 feet (67 m) in height), which resulted in many of the deaths and much of the property damage. Guide to the Anchorage Engineering Geology Evaluation Group papers, 1964. Only the ground immediately along the highway and that on the north side of the road dropped, prompting geologists to speculate that Girdwood may rest upon an ancient cliff face, now covered by countless thousands of years of sediment and glacial deposits. About 20 miles (32 km) of the Seward Highway sank below the high-water mark of Turnagain Arm; the highway and its bridges were raised and rebuilt in 1964–66. On March 27, 1964, a megathrust earthquake struck Alaska, about 15 miles below Prince William Sound, halfway between Anchorage and Valdez. It is a short, 5 minute walk to the view the informational markers. [17] The damage in British Columbia was estimated at CA$10 million ($81 million in 2018 Canadian dollars or $76 million in 2019 US dollars). The Good Friday Earthquake—a 1964 magnitude 9.2 event located in Prince William Sound—remains the largest earthquake ever recorded in the U.S. and the secondlargest earthquake ever recorded worldwide. [citation needed], A 4.5 ft (1.4 m) wave reached Prince Rupert, British Columbia, just south of the Alaska Panhandle, about three hours after the earthquake. The earthquake lasted approximately 4.5 minutes and is the most powerful recorded earthquake in U.S. history. Anchorage sustained great destruction or damage to many inadequately earthquake-engineered houses, buildings, and infrastructure (paved streets, sidewalks, water and sewer mains, electrical systems, and other man-made equipment), particularly in the several landslide zones along Knik Arm. Lucy Jones, a seismologist with the California Institute of Technology, said the earthquake produced "a pretty good jolt" in Pasadena, where she was. [28] A military airlift immediately began shipping relief supplies to Alaska, eventually delivering 2,570,000 pounds (1,170,000 kg) of food and other supplies. [29] The West Coast and Alaska Tsunami Warning Center was formed as a direct response to the disaster. Most other areas of the city were only moderately damaged. [3][9], As a result of the earthquake, 131 people are believed to have died:[3] Nine died as a result of the earthquake itself and another 122 died from the subsequent tsunami all over the world. [29] Broadcast journalist, Genie Chance, assisted in recovery and relief efforts, staying on the KENI air waves over Anchorage for 59 continuous hours as the voice of calm from her temporary post within the Anchorage Public Safety Building. Many in Anchorage, Valdez, Kodiak and Seward were honoring Good Friday and anticipating a pleasant Easter Sunday. Image credit: USGS A week in which several major earthquakes occurred around the Pacific rim ended with a major event of magnitude 7.2 shaking the Guerrero province of Mexico on the morning of Good Friday, 18 April. On March 27, 1964, the "Good Friday Earthquake" in Alaska generated shock waves that created a sloshing effect in the Aquifer and an almost instantaneous surge of over five feet in the J-17 well. This historic town has truly stood the test of time. Protect your head + neck while taking cover under sturdy furniture or near a sturdy interior wall, away from windows and doorways until shaking stops," the LAFD tweeted. List the different types of seismic waves, their different properties and describe how seismologists can use them to learn about earthquakes and the Earth's interior. Location Alternative Name Date (UTC) Time (UTC) Latitude Longitude References; 1. There was a tectonic tsunami produced in addition to about 20 smaller and local tsunamis. Major. Jesus, as described in the New Testament, was most likely crucified on Friday, April 3 in the year 33, geologists say. Anchorage was not hit by tsunamis, but downtown Anchorage was heavily damaged, and parts of the city built on sandy bluffs overlying "Bootlegger Cove clay" near Cook Inlet, most notably the Turnagain neighborhood, suffered landslide damage. It shows it's affect on surrounding areas including Seward. Tsunami waves were noted in over 20 countries, including Peru, New Zealand, Papua New Guinea, Japan, Mexico, and in the continent of Antarctica. "If inside, when shaking starts, drop cover, hold on. On Good Friday, March 27, 1964, the largest earthquake ever to hit North America struck Alaska. The earthquake hit after midnight on Friday 6 November 2020 at 12.25 am local time at a shallow depth of 12 miles. It lasted approximately four minutes and affected an approximately 100,000 square-mile area of South Central Alaska with the epicenter over six miles inland from College Fiord. The community of Girdwood was also confined to the southern side of the Seward Highway when water rushed into Turnagain Arm and flooded or destroyed any buildings left standing to the north of the highway. [14] Property damage was estimated at about $116 million[3] ($0.75 billion in 2019 dollars). You can actually view … Federal disaster relief funds paid for reconstruction as well as financially supporting the devastated infrastructure of Alaska's government, spending hundreds of millions of dollars that helped keep Alaska financially solvent until the discovery of massive oil deposits at Prudhoe Bay. 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, 56 miles (90 km) west of Valdez and 75 miles (120 km) east of Anchorage. A 9.2 on the Moment Magnitude Scale, this was the second largest earthquake in recorded history, generated huge tsunamis, killed 131 people, and cost over 300 million dollars in property damage. Years of studying the effects of this event revolutionized our understanding of plate tectonics. On March 27, 1964, at 5:36 p.m. AKST (3:36 a.m. UTC), a fault between the Pacific and North American plates ruptured near College Fjord in Prince William Sound. An enormously powerful 9.2 Magnitude earthquake struck in Prince William Sound. Six hundred miles (970 km) of fault ruptured at once and moved up to 60 ft (18 m), releasing about 500 years of stress buildup. Vertical displacement of up to 38 feet (11.5 m) occurred, affecting an area of 100,000 square miles (260,000 km2) within Alaska. [24], There were hundreds of aftershocks in the first weeks following the main shock. [21] Other coastal towns in the U.S. Pacific Northwest and Hawaii were damaged. Shock waves and other effects of the Good Friday earthquake were felt far beyond the borders of Alaska. The U.S. Army rapidly re-established communications with the lower 48 states, deployed troops to assist the citizens of Anchorage, and dispatched a convoy to Valdez. It was the second-largest earthquake ever recorded, second only to Chile in 1960, which experienced a quake of 9.5 Moment Magnitude (Mw). [2] Across south-central Alaska, ground fissures, collapsing structures, and tsunamis resulting from the earthquake caused about 131 deaths.[3]. [26] The team produced a report on May 8, 1964, just a little more than a month after the earthquake. 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