mt. redoubt

North face in 1980

Mount Redoubt Location in Alaska Elevation 10,197 feet (3,108 m)[1] Location Lake Clark National Park and Preserve, Kenai Peninsula Borough, Alaska, United States Range Chigmit Mountains, Aleutian Range Prominence 2,788 m (9,147 ft)[1] Coordinates 60°29'07?N 152°44'35?W? / ?60.48528°N 152.74306°W? / 60.48528; -152.74306Coordinates: 60°29'07?N 152°44'35?W? / ?60.48528°N 152.74306°W? / 60.48528; -152.74306 Type Stratovolcano Age of rock 890,000 years[2] Last eruption Currently Erupting First ascent 1959 by C Deehr, J Gardey, F Kennell, G Wescott[1] Easiest route snow/ice climb Locations of volcanoes near Cook Inlet

This page is about the Alaskan Volcano. For other uses for the name, see

Mount Redoubt

Mount Redoubt, or Redoubt Volcano, is an active and currently erupting stratovolcano in the largely volcanic Aleutian Range of the U.S. state of Alaska. It is located in the Chigmit Mountains (a subrange of the Aleutians), west of Cook Inlet, in the Kenai Peninsula Borough about 180 km (110 miles) southwest of Anchorage. The Alaska Volcano Observatory currently rates Redoubt as Aviation Alert Level Red and Volcano Alert Level Warning. Mount Redoubt rises 9,000 feet (2,700 m) above the surrounding valleys to the north, south, and southeast in little over 5 miles (8 km); it is also the third highest within the range, with nearby Mount Torbert, at 11,413 feet, being the highest in the range and Mount Spurr at 11,070 feet being the second highest.

Active for millennia, Mount Redoubt has erupted five times since 1900: in 1902, 1922, 1966, 1989 and 2009. The eruption in 1989 spewed volcanic ash to a height of 14,000 m (45,000 ft) and managed to catch KLM Royal Dutch Airlines flight 867, a Boeing 747 aircraft, in its plume (the flight landed safely at Anchorage). The ash covered an area of about 20,000 km² (7,700 sq. miles). The 1989 eruption is also notable for being the first ever volcanic eruption to be successfully predicted by the method of long-period seismic events developed by Swiss/American volcanologist Bernard Chouet.[3] Contents [hide] 1 Name 2 Geology 3 Eruptions 3.1 Early reports 3.2 1881 3.3 1902 3.4 1989–1990 3.5 2009 3.5.1 Pre-eruption 3.5.2 March 15 3.5.3 Emissions 3.5.4 Large scale eruptions begin 4 See also 5 References 6 External links and resources //

Name

The official name of the mountain is Redoubt Volcano.[4] The name is a translation of the Russian name "Sopka Redutskaya", referring, as does the word "redoubt", to "a fortified place". A local name, "Ujakushatsch", also means "fortified place", but it is difficult to determine if one name is derived from the other. The Board on Geographic Names decided on the name "Redoubt Volcano" in 1891.[4]

The Global Volcanism Program of the Smithsonian Institution refers to the mountain simply as "Redoubt", and lists the following as alternate names: Burnt Mountain, Goreloi, Mirando, Ujakushatsch, Viesokaia, and Yjakushatsch.[2] The Alaska