Most ejecta from the 1992 eruptions of Crater Peak was deposited as tephra fall from eruption col- umns that ascended rapidly to altitudes of greater than 14 km above sea level, Coarse bomb- to fine ash-sized tephra fell along relatively narrow From Casadevall (1994): "The December 1989-June 1990 eruption of Redoubt Volcano affected commercial and military air operations in the vicinity of Anchorage, Alaska. On 27 June, 1992, the Crater Peak vent on the south side of Mt. Redoubt’s 1990 eruption severely disrupted air traffic, halted oil production in Cook Inlet, closed schools, and caused power outages. Mt Spurr had a violent sub-plinian eruption in 1992 and a large eruption in 1953, both ranking at VEI 4 and produced by Crater Peak, a small flank vent on the south side. Lahars from the 1992 eruptions of Crater Peak, Mount Spurr volcano, Alaska, 1995 Meyer, D. F., and Trabant, D. C., 1995, Lahars from the 1992 eruptions of Crater Peak, Mount Spurr volcano, Alaska: in Keith, T. E. C., (ed. The last known eruption of Bogoslof was in 1992 when it produced a VEI 3 eruption and a new dome. Description: McGimsey and others (1995) summarize this eruption as follows: "The recent eruption began in early July, 1992. Still today, volcanoes affect life in Alaska. AUGUST 18, 1992, ERUPTION OF CRATER PEAK VENT ON SPURR VOLCANO, ALASKA McGimsey, R. G., and Dorava, J. M., 1992, August 18, 1992, eruption of Crater Peak vent on Spurr volcano, Alaska: U.S. Geological Survey Open-File Report 94-0614-A, 1 videocassette. Bogoslof Volcano in Alaska Unexpectedly Erupts. Mt Spurr volcano is the highest volcano in the Aleutian Volcanic Arc. Mt Spurr had a violent sub-plinian eruption in 1992 and a large eruption in 1953, both ranking at VEI 4 and produced by Crater Peak, a small flank vent on the south side. the glacier-covered stratovolcano is located 130 km west of Anchorage and NE of Chakachamna Lake.
This is a list of volcanic eruptions of the 20th century measuring a Volcanic Explosivity Index (VEI) of at least 4, as well as notable smaller eruptions. Most Recent Eruptions: 1992 Overall Threat Score: 163. Note that there may be many other eruptions that have not been identified, and estimates for the size of eruptions can be subject to considerable uncertainties. Authors: Keith, T.E.C. Mt. ), The 1992 eruptions of Crater Peak vent, Mount Spurr volcano, Alaska, U.S. Geological Survey Bulletin 2139, p. 183-198. A volcano erupted today for the second time this summer in southwest Alaska, showering light ash on Anchorage, 80 miles to the east. The 1992 eruptions of Crater Peak vent, Mount Spurr Volcano, Alaska. Approximately 80 miles from the city of Anchorage lies Mount Spurr—the closest volcano to Alaska’s largest city. A few hours later pilots visually confirmed the steam and ash plume. Spurr awoke from 39 years of dormancy and burst into sub-plinian eruption after 10 months of elevated seismicity. Two more eruptions followed in August and September. Between December and February, five commercial jetliners were … Spurr reported activity, including all types of volcanic activity.