Prior to the 2002 earthquakes, the Denali Fault was known to be seismically active, but scientists weren’t sure if it was capable of generating a large earthquake. While the fault rupture lasted for approximately 100 sec from its initiation to the arrest, its distal effects were felt for many days. This Synthetic Aperture Radar (SAR) interferogram includes the epicenters of the October 23, 2002, and November 3, 2002 Denali Fault earthquakes, which are located at the extreme western end of the fault rupture. The earthquake was preceded by an M W 6.7 right‐lateral strike‐slip earthquake on 23 October, with its epicenter only 22 km west of the M W 7.9 epicenter [Eberhart‐Phillips et al., 2003].These earthquakes are the largest earthquakes to occur on the Denali … Because the 2002 Denali Fault earthquake occurred on a "strike-slip" fault, like the San Andreas Fault, it offers a realistic example of effects likely to accompany the next major earthquake in California. On November 3, 2002, the Denali Fault ruptured over a distance of 336 km, producing the largest earthquake from a continental strike-slip fault in North America since the 1906 San Francisco earthquake. October 2002 Nenana Mountain earthquake and the 3 November 2002 Denali earthquake by satellite radar imagery. The Nenana Mountain and Denali Fault earthquakes generated a vigorous aftershock sequence. The majority of landslides clustered in a narrow band extending about 8 to 12 miles on either side of the rupture. On November 3, 2002 a devastating earthquake rattled Alaska. Letting v* in eq. The largest inland earthquake in North America in almost 150 years struck Alaska on November 3, 2002. 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. UAF is an AA/EO employer and educational institution and prohibits illegal discrimination against any individual. Should such a quake occur today, San Bernardino, Los Angeles, and other populations centers in southern California could suffer heavy damage and loss of life. The Trans-Alaska Pipeline suffered some damage, but no oil spills occurred. The earthquake ruptured about 300 km of the Denali fault system (Fig. The survival of the Trans-Alaska Oil Pipeline in the 2002 Denali Fault earthquake demonstrates the value of combining careful geologic studies of earthquake hazards and creative engineering in designing and protecting such important structures and lifelines. The runway was rendered unusable by lateral spreading, accompanied by sand boils. 1). It started on the previously unrecognized Susitna Glacier Thrust fault, a splay fault south of the McKinley strand of the Denali fault system (DFS). The M 7.9 Denali Fault event was preceded by the magnitude 6.7 Nenana Mountain event on October 23, 2002. On Nov. 3, 2002, the Great Alaskan tremor struck. The 2002 M7.9 Denali fault, Alaska, earthquake triggered thousands of landslides, primarily rock falls and rock slides, that ranged in volume from rock falls of a few cubic meters to rock avalanches having volumes as great as 15×10 6 m 3.The pattern of landsliding was unusual; the number of slides was less than expected for an earthquake of this magnitude, and the … This powerful shock may have been triggered by a magnitude 6.7 temblor, the Nenana Mountain earthquake, that occurred nearby on the same fault 10 days earlier. (SHOW WORK) See answers (1) Ask for details ; Follow Report You have no question. EERI (Photo and interpretation by Wesley K. Wallace, Geophysical Institute, University of Alaska Fairbanks). The Denali Fault earthquake ruptured the Earth's surface for 209 miles, crossing beneath the vital Trans-Alaska Oil Pipeline, which carries 17% of the U.S. domestic oil supply. They identified the previously unknown Susitna Glacier Fault in the area where the quake began and showed that the rest of the rupture exactly followed an older rupture that geologists had documented in the 1970's. We use a spectral-element method implemented on the Earth Simulator in Japan to simulate broadband seismic waves generated by the 3 November 2002 Denali fault earthquake. The earthquake lasted about 100 seconds. This M w =7.9 event is the largest strike–slip earthquake in North America in almost 150 years. A few of these stations are part of the new Advanced National Seismic System (ANSS) being deployed by the USGS and cooperators. The 2003 Rat Islands earthquake in Alaska had a Richter scale magnitude of 7.8. They also located major landslides caused by the quake. Following the Denali Fault earthquake, the analyst processing load increased from an average of 40 events per day in September to an average of over 400 events per day in November. Total length of the rupture was at least 300 km (190 miles). sorry I forgot to ask the question It ruptured three different faults ending with a total rupture length of ~330 km. Following the Denali Fault earthquake, adjacent fault segments have been stressed, increasing the likelihood of additional earthquakes on those segments. The locations of the Nenana Mountain and Denali Fault earthquakes and their aftershocks were determined by the Alaska Earthquake Information Center (AEIC) at the University of Alaska Fairbanks. Rupture in South-Central Alaska—The Denali Fault Earthquake of 2002 A powerful magnitude 7.9 earthquake struck Alaska on November 3, 2002, rupturing the Earth's surface for 209 miles along the Susitna Glacier, Denali, and Totschunda Faults. Four month of data remain unprocessed at this time (January-April, 2003). Additional instruments were deployed after the Denali Fault quake, and as of December 2002, a total of 26 temporary seismic stations were gathering data on the quake's aftershocks. Although comparable in size and type to the quake that devastated San Francisco in 1906, the Denali Fault earthquake caused no deaths and little damage to structures because it struck a sparsely populated region of south-central Alaska.