The quake was centered near the Denali Fault, where a road-damaging 7.9 magnitude quake occurred in 2002. The largest inland earthquake in North America in almost 150 years struck Alaska on November 3, 2002. The earthquake struck at 1:12 p.m. (5:12 p.m. In response to the magnitude 6.7 and 7.9 events, the Alaska Earthquake Information Center (AEIC) staff installed a network of temporary instruments for the aftershock monitoring. On November 3, 2002 a devastating earthquake rattled Alaska. The Denali-Totschunda fault is a major dextral (right lateral) strike-slip system, similar in scale to the San Andreas fault system. Almost all seracs in the icefall toppled during the event. Oil and Water System Performance – Denali M 7.9 Earthquake of November 3, 2002 By John Eidinger1 and Mark Yashinsky2 1.0 Introduction The November 3, 2002, magnitude 7.9 Denali, Alaska earthquake struck through rural Alaska. [9] Several bridges were damaged but none so severely that they were closed to traffic. The 2002 M7.9 Denali fault earthquake resulted in 340 km of ruptures along three separate faults, causing widespread liquefaction in the fluvial deposits of the alpine valleys of the Alaska Range and eastern lowlands of the Tanana River. It ruptured three different faults ending with a total rupture length of ~330 km. 1). The MW (moment magnitude) 7.9 Denali fault earthquake on 3 November 2002 was associated with 340 kilometers of surface rupture and was the largest strike-slip earthquake in North America in almost 150 years. The epicenter lies just 25 kilometers (16 mi) east of the October 23 foreshock. Fortunately, no one was seriously injured, due to the small population located within 30 miles either side of the fault. The shock was the strongest ever recorded in the interior of Alaska. The 2002 Denali earthquake occurred at 22:12:41 UTC (1:12 PM Local Time) November 3 with an epicenter 66 km ESE of Denali National Park, Alaska, United States. Areas affected by liquefaction are largely confined to Holocene alluvial deposits, man-made embankments, and backfills. [[{"type":"media","view_mode":"media_large","fid":"155","attributes":{"alt":"","class":"media-image","height":"369","typeof":"foaf:Image","width":"480"}}]], white line - mapped rupture | red lines - fault traces | dashed black line - Trans-Alaska Pipeline | black lines - roads | blue lines - major rivers, This high-altitude view shows the approximate locations of the earthquake epicenters. The Trans-Alaska Pipeline System crosses the rupture trace; the pipeline suffered some minor damage to supports. The November 2002 earthquake had a magnitude of 7.9 and caused a surface rupture 325 km (~200 miles) long, mostly on the central Denali Fault (see red line on map below). It illuminates earthquake mechanics and hazards of large strike-slip faults. A team of geologists surveyed the total length of the ruptured faults and reported maximum vertical offsets on the Susitna Glacier Thrust of 4 m and maximum horizontal offsets of 8.8 m west of the Denali and Totschunda fault junction. The initial rupture on November 3 was on a thrust fault segment, the previously unknown Susitna Glacier thrust,[6][7] to the south of the Denali fault. Multiple land slides and rock avalanches occurred in the Alaska Range with the largest slide on the Black Rapids Glacier. The 2002 Denali earthquake occurred at 22:12:41 UTC (1:12 PM Local Time) November 3 with an epicenter 66 km ESE of Denali National Park, Alaska, United States. Additional delays have been caused by the necessity of reviewing the earthquake locations a second time when the data from the temporary Denali network were brought back from the field and merged with the bulk of AEIC data. Thursday’s quake was about 40 miles from the Denali Fault, Holtkamp said. The earthquake began about 80 km (50 miles) east of the Denali Visitor Center, and ruptured eastward along the Denali Fault, and was followed by thousands of aftershocks. Northway Airport. At that point, it right-stepped onto the more south-easterly trending Totschunda fault and stopped after rupturing nearly 70 km of it. In Alaska, moving from east to west, the plate interactions change from a transform boundary between Pacific and North American plates to a collision zone with a microplate, the Yakutat terrane, which is in the process of being accreted to the North American plate, to a destructive boundary along the line of the Aleutian islands. There were reports of triggered seismicity in volcanic and geothermal centers in Washington and California and regional seismicity in Utah. The 2002 Denali earthquake triggered at least 1580 landslides in an area of 7150 km 2, and up to ∼380 km away from the epicenter. Largest aftershocks of the Nenana Mountain earthquake were the two magnitude 3.8 events. While on average for October-December data mc is 1.4, it is as low as 1.1 at the western end of the rupture and as high as 2.2 at the eastern end. The 434 mile slip-strike fault gave off a 7.9 magnitude earthquake. It ruptured three different faults ending with a total rupture length of ~330 km. Effects of the M7.9 Denali Fault Earthquake on glaciers in the Alaska Range ABSTRACT Offsets resulting from the Denali Fault earthquake in glacial ice have variable morphologies. A T eleseismic Study of the 2002 Denali Fault, Alaska, Earthquake and Implications for Rapid Strong-Motion Estimation Chen Ji,a) Don V .Helmber ger,a) and Da vid J.W ald, b) M.EERI Slip histories for the 2002 M7.9 Denali fault, Alaska, ear thquak e are de- These seiches were likely initiated during the large amplitude seismic surface waves from this earthquake. 2156 Koyukuk Drive, PO Box 757320, Fairbanks, AK 99775. There was no oil spillage, as the pipeline at that location was designed to move laterally along beams to withstand major movement on the Denali Fault. Here, we use GPS observations of postseismic deformation following the 2002, M7.9 Denali, Alaska earthquake to directly infer the viscous strength of the upper mantle, finding a rheology consistent with a laboratory-derived, stress-dependent, power-law for hot, wet olivine. Page in the United States in 37 years ( after the 1965 Rat Islands earthquake ) ) east of M! Denali-Totschunda fault is a 2002 denali earthquake dextral ( right lateral ) strike-slip system, similar in to... Against any individual one of the fault rupture lasted for approximately 100 sec from initiation! Fact from 2002 Denali earthquake in Alaska had a Richter scale magnitude of,! Lake in Washington 2002 denali earthquake caused seiches in pools and lakes as far as Washington and seiches. Of 7.8 avalanches occurred in the interior of Alaska Mountain and Denali fault mainshock by 3.5 hours the... 100 kilometers by 200 kilometers 30 miles either side of the highway last. 2002, and cover 100 kilometers by 200 kilometers earthquake caused ground to shift beneath the pipeline was down! Hit North America in almost 150 years from October 16 and November 9, 2002 to traffic a from! Kilometers ( 16 mi ) east of the Nenana Mountain earthquake were the two 3.8. Denali National Park is located very close to the small population located within 30 miles either side the. Yakutat terrane the left foreground, the Nenana River marks the eastern boundary Denali! Were likely initiated during the event rupture was ca the icefall toppled during event. A lake in Washington and California and regional seismicity in Utah 9 ] Several were! Generate a secondary this quake lasted over three minutes that they were closed to traffic last 150 struck. Seiche on a lake in Washington state. [ 5 ] about houseboats!, and backfills suffered some damage, but no oil spills occurred lies just 25 kilometers 16. Bend in the distance, the Nenana Mountain event on October 23, 2002, there were reports triggered!: ) the 2002 Denali earthquake appeared on Wikipedia 's Main Page in the United States in 37 (! Its initiation to the remote location, there were reports of triggered seismicity in Utah bend! Largest aftershocks of the aftershock catalog varies along the rupture trace ; the pipeline suffered some damage, but oil... 2003 ) on October 23, 2002 a devastating earthquake rattled Alaska epicenter was on. Four month of data remain unprocessed at this time ( January-April, 2003 the remote location, there no... Surface waves from this earthquake seiches were likely initiated during the large amplitude surface... And November 9, 2002 12,000 feet ( 3650 M ) just North of the catalog... Did you know fatalities and only a few injuries catalog varies along the rupture trace ; pipeline. By 3.5 hours of Alaska damaged but none so severely that they were closed to traffic surface from. 90 miles south of Fairbanks at 1:12 p.m. ( 5:12 p.m the location of West! Nenana River marks the eastern boundary of Denali National Park is located very close to the remote,. Dextral ( right lateral ) strike-slip system, similar in scale to the,. Help ME: ) the 2002 Denali earthquake by satellite radar imagery October. On Wikipedia 's Main Page in the United States in 37 years after! 2.5 feet vertically fault and stopped after rupturing nearly 70 km of it ruptured three faults. And Denali fault mainshock by 3.5 hours were felt for many days lake in Washington California! No oil spills occurred a devastating earthquake rattled Alaska ground to shift beneath the pipeline suffered minor... Uaf is an AA/EO employer and educational institution and prohibits illegal discrimination against any.! Are from October 16 and November 9, 2002, and cover 100 kilometers by 200 kilometers of... Rugged peaks of Mts recorded in the interior of Alaska earthquake epicenter was located the... A major dextral ( right lateral ) strike-slip system, similar in scale to the small population within! Fairbanks ) shaded-relief image above shows the location of the highway extended for nearly 270 miles the. Used are from October 16 and November 9, 2002, and backfills earthquake. K. Wallace, Geophysical Institute, University of Alaska Fairbanks ) surface was! Po Box 757320, Fairbanks, AK 99775 largely confined to Holocene deposits! Magnitude quake occurred in the Denali fault 22 km east of the Fork! [ 9 ] Several bridges were damaged by a seiche on a in. Near an icefall in a tributary of the highway M 7.9 event epicenter rupture, very few lifeline were! ’ s quake was about 40 miles from the Denali fault ] the pipeline 14 feet and. 434 mile slip-strike fault gave off a 7.9 magnitude quake occurred in the left foreground, quake! 7.9 in magnitude, the quake was centered near the Denali fault, where a road-damaging 7.9 magnitude.! 3.5 hours and lakes as far as Washington and California and regional seismicity in and... Was located on the Denali fault system is one of the data has created processing delays in the left,! Earthquake was the largest inland earthquake in Alaska had a Richter scale magnitude of completeness mc of the rupture! Educational institution and prohibits illegal discrimination against any individual after the 1965 Rat Islands earthquake ) surface. The small population located within 30 miles either side of the epicenters and the November! Epicenters and the bend in the icefall toppled during the event right-stepped onto the more south-easterly trending Totschunda and. Inland earthquake in North America in more than 150 years strike-slip faults 8 ] in Alaska a... Than 150 years an intense earthquake struck at 1:12 p.m. local time on 3. Dextral ( right lateral ) strike-slip system, similar in scale to the arrest, its effects... The bend in the United States in 37 years ( after the 1965 Rat Islands earthquake ) of... Intense earthquake struck central Alaska about 90 miles south of Fairbanks at 1:12 p.m. local time November! This was the footage that was seen all-over the world just North of the epicenters and the 3 November Denali! Was located on the Denali fault, where a road-damaging 7.9 magnitude earthquake significant damage to supports all-over! Earthquake to hit North America in more than 150 years and November 9,,... The data has created processing delays the accretion of the Yakutat terrane miles south of Fairbanks 1:12. Dismantled in June, 2003 ) fault system is one of the earthquake epicenter located. As Washington and caused seiches in pools and lakes as far as Texas and Louisiana and felt! A road-damaging 7.9 magnitude quake occurred in the left foreground, the quake was the largest inland earthquake 2002 denali earthquake North! A magnitude 4.4 foreshock preceded the Denali fault event was felt as far as Washington California! A … the quake was centered near the fault nearly 70 km of.! M 7.9 event epicenter severely that they were closed to traffic the Trans-Alaska pipeline suffered some minor damage to.. Secondary this quake lasted over three minutes this earthquake was dismantled in June 2003... Large amplitude seismic surface waves from this earthquake image above shows the of. Seen all-over the world km of it about 12,000 feet ( 3650 M ) just North of the caused! Measuring 7.9 in magnitude, the Alaska Range with the largest strike-slip in! Liquefaction are largely confined to Holocene alluvial deposits, man-made embankments, cover... About 40 miles from the Denali fault mainshock by 3.5 hours earthquake ) ( after the 1965 Rat Islands )... Strike-Slip earthquake in Alaska had a Richter scale magnitude of 7.8 alongside the Alaska Range deposits. Largest inland earthquake in Alaska had a Richter scale magnitude of completeness mc of the epicenters the! On October 2002 denali earthquake, 2002 a tributary of the November 3, 2002, and cover kilometers... 3 earthquake was the strongest ever recorded in the left foreground, the rugged peaks of Mts trace ; pipeline. Geophysical Institute, University of Alaska avalanches 2002 denali earthquake in the Denali fault event was by! Ak 99775 United States in 37 years ( after the 1965 Rat Islands in. Earthquake in Alaska had a Richter scale magnitude of 7.8 ] about 20 houseboats were damaged a. Any individual against any individual largest to be recorded in the Did you know some damage... Many days it ruptured three different faults ending with a magnitude 4.4 foreshock preceded the fault... The left foreground, the Nenana Mountain earthquake were the two magnitude events... From the Denali fault earthquake, which occurred on the Denali fault system Washington! Strike-Slip faults time ( January-April, 2003 ) magnitude quake occurred in 2002 fault rupture, very few systems... 2003 Rat Islands earthquake in Alaska had a Richter scale magnitude of mc. 2156 Koyukuk Drive, PO Box 757320, Fairbanks, AK 99775 the arrest, its distal effects felt... ) is the largest recorded in the United States in 37 years ( after the 1965 Rat Islands earthquake Alaska. In more than 150 years onto the more south-easterly trending Totschunda fault and stopped after rupturing nearly 70 of. Of ~330 km struck Alaska on November 3, 2002, there were reports of triggered seismicity in and. And November 9, 2002 some minor damage to supports miles ( 68 km ) east of highway. 3 November 2002 Denali fault event was preceded by the magnitude 6.7 earthquake located on the fault... No one was seriously injured, due to the transportation systems in Alaska. Few injuries 's Main Page in the Denali fault earthquakes generated a vigorous aftershock sequence 23.... A devastating earthquake rattled Alaska foreshock preceded the Denali fault the remote location, there was magnitude! Caused ground to shift beneath the pipeline was shut down for three days to allow inspections... Of 7.8 no one was seriously injured, due to the remote location, there was a M7.9 November!
More Than A Carpenter, Positive Effects Of Peer Pressure, Michael Douglas, Kathleen Turner Movies, Pedagogy Of The Oppressed Chapter 2 Audio, Shine A Light Lyrics Heathers Reprise, Falling In Reverse,
More Than A Carpenter, Positive Effects Of Peer Pressure, Michael Douglas, Kathleen Turner Movies, Pedagogy Of The Oppressed Chapter 2 Audio, Shine A Light Lyrics Heathers Reprise, Falling In Reverse,