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Topic: Mount Spurr

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	Volcano Warnings at Mount Spurr in 1992
		Crater Peak is a small cone located on the south margin of the collapse caldera of Mount Spurr.
		Subsequent earthquake activity, including periods of continuous ground shaking known as tremor, was monitored by scientists of the Alaska Volcano Observatory, and it formed the basis of several eruption warnings and notifications in 1992.
		We've broken the activity of Mount Spurr into three time periods so that you can learn more about the eruption precursors and the eruption warnings and public statements issued by scientists of the Alaska Volcano Observatory in 1991-92.
	volcanoes.usgs.gov /About/What/Erupt/CaseSpurr.html (385 words)

	\| Field Robotics Center (Site not responding. Last check: 2007-10-11)
		The Dante II mission is to Mount Spurr in Alaska.
		Spurr is part of the Aleutian arc which extends about 1,550 miles along the southern edge of the Bering Sea and Alaskan mainland.
		The Spurr volcanic complex consists of an ancestral volcano whose growth was terminated by the formation of an avalanche caldera.
	www.frc.ri.cmu.edu /projects/danteII/mission/index.php (691 words)

	Sitnews - Stories In the News - Ketchikan, Alaska - News: Golden Anniversary of Anchorage's First Blackout by Ned Rozell (Site not responding. Last check: 2007-10-11)
		Mount Spurr, located 78 miles west of Anchorage, had erupted, and a western wind carried much of the ash over Alaska's largest city.
		Mount Spurr, the tallest of the mountains in this photo taken from the hills east of Anchorage, fled out the city with ash 50 years ago in the first interaction between a volcano and urban Alaska.
		The 1953 Mount Spurr eruption was urban Alaska's introduction to the disruption of regular life that could happen on any day in areas downwind from Alaska's active volcanoes, said Tom Murray, the scientist-in-charge at the Alaska Volcano Observatory in Anchorage.
	www.sitnews.us /0703news/071603/071603_ak_science_spurr.html (675 words)

	SignOnSanDiego.com > News > Science -- Mount St. Helens volcano part of Pacific 'ring of fire'
		Mount St. Helens and the Cascades lie near the edge of the Juan de Fuca plate, which is diving under the North American plate to create a 700-mile long "subduction zone" along the ocean floor that triggers earthquakes and pushes molten rock upwards.
		Mount St. Helens lies along a particularly weak area of the crust, causing it to be the most active volcano in the Northwest over the centuries, said Jon Major, a U.S. Geological Survey researcher in Vancouver, Wash.
		Mount Jefferson, which lies between Mount Hood and the Three Sisters in the Oregon stretch of the Cascades, appears to have been dormant since the last Ice Age despite relatively recent eruptions on neighboring peaks, he said.
	www.signonsandiego.com /news/science/20040930-1419-wst-ringoffire.html (702 words)

	Eruptions of Mount Spurr Volcano, Alaska, Photographs of the 1992 Eruptions
		Spurr is an active volcano located 125 km (78 mi) west of Anchorage, the state of Alaska's largest city and an important transportation hub in the North Pacific.
		Subsequent eruptions built an andesite lava dome that is now the 3374-m- (11,070 ft) summit of Mount Spurr, and Crater Peak, a 2309-m- (7576 ft) high satellitic cone on the south margin of the caldera.
		Mount Spurr proper is an ice-covered, andesite lava dome complex that has not erupted in historic times.
	www.gly.bris.ac.uk /www/teach/virtrips/volcs/Spurr.html (3370 words)

	Sneaky Mount Spurr, Alaska Science Forum
		Just two years ago, on August 18, 1992, Spurr erupted so much gritty ash into the air over Southcentral Alaska that automatic streetlights turned on hours before sunset--and that was only one of its 1992 eruptions.
		Mount Pinatubo in the Philippines, for example, gushed out thousands of tons of sulfur dioxide to warn of its impending eruption.
		During the course of the eruptions, the volcano released between 200,000 and 400,000 metric tons of sulfur-dioxide.
	www.gi.alaska.edu /ScienceForum/ASF11/1197.html (657 words)

	Savage Earth: The Volcanoes of North America
		Mount St. Helens is arguably North America's most famous volcano, but you don't have to live in southwestern Washington state to have an active volcano in your back yard.
		The volcanic island chain, which stretches west from the mainland toward Kamchatka on the northwest Asian coast, is the result of the sinking of the Pacific plate beneath the North American plate.
		In the Cascade Range in the Pacific Northwest, the home of Mount St. Helens, geophysicists are continuously monitoring a number of other volcanoes that have erupted within the past two centuries, including Mount Shasta, Mount Hood, Lassen Peak, and Mount Rainier.
	www.pbs.org /wnet/savageearth/volcanoes/html/sidebar1.html (614 words)

	Spurr, Alaska
		Spurr and the peak visible on the left define the rim of caldera, evacuated by a huge debris avalanche about 10,000 years ago.
		The Spurr volcanic complex was built on the remains of an older volcano.
		The present Mt. Spurr grew in the center of the old caldera.
	volcano.und.nodak.edu /vwdocs/volc_images/north_america/alaska/spurr.html (305 words)

	LiveScience.com - Alaska Volcanoes Rumble to Life
		Mount Spurr, 80 miles west of Anchorage across Cook Inlet, shook itself from a 12-year sleep in early July and has been in Code Yellow status ever since, with daily small earthquakes.
		Spurr is in its seventh month of elevated earthquake activity, according to the observatory.
		Mount Veniaminof seen from an airplane on Jan. 11, 2005 during a minor ash eruption.
	www.livescience.com /forcesofnature/ap_alaska_volcano_050131.html (805 words)

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		The May 18, 1980, eruption of Mount Saint Helens was the most destructive in the history of the United States.
		Mount Saint Helens is located in southwest Washington in the Cascade Range, a mountain range dominated by periodically active volcanic peaks.
		Mount Pinatubo is an andesitic island arc volcano, located on the southwestern part of the island of Luzon in the Philippines.
	www.ngdc.noaa.gov /seg/hazard/slideset/volcanoes (943 words)

	The Seattle Times: Local News: Alaskan volcano stirs from 12-year slumber
		ANCHORAGE — Mount Spurr is showing some life these days, 12 years after the volcano last erupted.
		The quakes are the only confirmed volcanic activity at Spurr so far, indicative of the movement deep below the mountain of magma, or molten rock and gases, that is beginning to seek an outlet, according to Power.
		Mount Spurr is one of more than 40 active Alaska volcanoes along an arc of mountains and islands from the Tordrillo Mountains south and west to the far Aleutians.
	seattletimes.nwsource.com /html/localnews/2001991236_webvolcano28.html (381 words)

	Global Volcanism Program \| Spurr \| Summary (Site not responding. Last check: 2007-10-11)
		The 3374-m-high summit of Mount Spurr, the highest volcano of the Aleutain arc, is a large lava dome constructed at the center of a roughly 5-km-wide horseshoe-shaped caldera that is open to the south.
		The caldera was formed by a late-Pleistocene or early Holocene debris avalanche and associated pyroclastic flows that destroyed an ancestral Spurr volcano.
		Spurr's two historical eruptions, from Crater Peak in 1953 and 1992, deposited ash on the city of Anchorage.
	www.volcano.si.edu /world/volcano.cfm?vnum=1103-04- (195 words)

	deseretnews.com \| Alaska volcano stirring after 12 years
		ANCHORAGE — Noting a swarm of tiny earthquakes beneath volcanic Mount Spurr, scientists have warned that the volcano 80 miles west of Anchorage could erupt in the next few weeks.
		Mount Spurr was last significantly active in 1992.
		Mount Spurr is one of more than 40 active Alaska volcanoes.
	deseretnews.com /dn/view/0,1249,595080548,00.html (181 words)

	"More Than Just Mount Spurr Ready to Rumble", an article at Holistic Junction
		The summit dome complex of Mount Spurr is largely covered in ice; its last known eruption was approximately 5,000 years ago.
		Primary hazards from future eruptions at Mount Spurr and Crater Peak include far-traveled ash clouds, ash fall, pyroclastic flows, and lahars or mudflows that could impact drainages primarily on the south and east sides of the volcano.
		Mount Veniaminof volcano is a young stratovolcano with an ice-filled 10-km (6 mi) diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville.
	www.holisticjunction.com /articles/2071.html (1082 words)

	BRIAN"S HOME PAGE! (Site not responding. Last check: 2007-10-11)
		Mount Spurr is an Alaskan volcano named after a member of my family.
		Mount Spurr is a stratovolcano that has a satellite vent known as Crater Peak.
		Mount Spurr is 3374 m high and has not been climbed often.
	users.iafrica.com /b/bs/bspurr/spurr2.htm (123 words)

	Mount Spurr - Wikipedia, the free encyclopedia
		Mount Spurr is a stratovolcano in the Aleutian Volcanic Arc of Alaska, named after United States Geological Survey geologist and explorer Josiah Edward Spurr, who led an expedition to the area in 1898.
		On July 26, 2004, the Alaska Volcano Observatory (AVO) raised the "Color Concern Code" at Spurr from green to yellow due to an increasing number of earthquakes.
		On September 16th, 2005, AVO included in a weekly update that the current activity at Mount Spurr is declining.
	en.wikipedia.org /wiki/Mount_Spurr (383 words)

	www.myspace.com/mountaugustine
		SPURR VOLCANO (CAVW..1103-04-) 61.2994°N 152.2511°W, Summit Elevation 11070 ft (3374 m) Current Level of Concern Color Code: YELLOW The level of seismic activity at Mount Spurr volcano remained above background over the past week.
		Mount Spurr volcano is an ice- and snow-covered stratovolcano located on the west side of Cook Inlet approximately 120 km (75 mi) west of Anchorage.
		The last known eruption from the summit of Mount Spurr was more than 5,000 years ago.
	www.myspace.com /mountaugustine (1042 words)

	Alaska Volcanoes Volcano Map
		For more than 50 years, scientists believed Mount Katmai was the source of the eruption, but they later found that almost all of the magma that erupted came from the nearby Novarupta volcano.
		Mount Spurr is a Quaternary stratovolcano located near the northeastern end of the Aleutian volcanic arc.
		It is the easternmost historically active volcano in the Aleutian arc and is the highest of several snow- and ice-covered peaks that appear to define a large, dissected stratovolcano.
	www.alaskatrekker.com /volcanoes.htm (694 words)

	Spurr Volcanic Complex, Alaska (Site not responding. Last check: 2007-10-11)
		Mount Spurr, the highest volcano of the Aleutian arc, is a large lava dome at the center of a ~5-km-wide horseshoe-shaped caldera that opens to the S. The caldera was formed by a late Pleistocene or early Holocene debris avalanche that destroyed an ancestral Spurr volcano.
		The Spurr volcanic complex consists of an older volcano which collapsed and the present day Mount Spurr and Crater Peak.
		Crater Peak was the location of the first major historic eruption at Spurr, on July 9, 1953.
	users.bendnet.com /bjensen/volcano/alaskacanada/alaska-spurr.html (188 words)

	Active Volcanoes / Aktive vulkaner: Spurr, Alaska
		Mount Spurr is a Quaternary stratovolcano located near the northeastern end of the Aleutian
		Mount Spurr volcano, 3,374 m (11,070 ft) high, is visible on the skyline 125 km
		Mount Spurr, the volcano on Anchorage's doorstep, is kicking up once again, the first time
	www.vulkaner.no /v/volcan/alaska/spurr.html (1939 words)

	The Mat-Su Valley Frontiersman
		It's been 12 years since Spurr last erupted, and scientists with the Alaska Volcanic Observatory tagged Spurr with a yellow label, a sign they've increased the level of monitoring on the mountain, and a potential forewarning of volcanic activity.
		The Beluga plant weathered Spurr's 1992 eruption with little disturbance, according to Chugach representative Patti Bogan, and the co-op's staff are confident it will do so again in the case of another eruption.
		If Spurr erupts, Bogan said, and the Beluga plant is forced to shut down, Chugach would first attempt to purchase power from other cooperatives or increase activity from areas not generally used.
	www.frontiersman.com /articles/2004/08/16/news/news3.txt (561 words)

	Lake Clark Geology
		It extends from Mount Spurr near Lake Clark to Buldir Island in the western Aleutians.
		Mount Spurr, at 11,070 feet, lies just north of the park.
		Mount Redoubt, at 10,197 feet, and Mount Iliamna, at 10,016 feet, are both located in the park.
	www.nps.gov /lacl/geology.htm (1564 words)

	Steve Quayle News Alerts (Site not responding. Last check: 2007-10-11)
		Mount Veniaminof on the Alaska Peninsula began spitting out ash earlier this month, and the volcano could be on the verge of a larger blowout, according to the federal-state Alaska Volcano Observatory.
		The other stirring volcano is Mount Spurr, an 11,070-foot peak about 80 miles west of Anchorage.
		Spurr last erupted in 1992, but that and other recorded eruptions came from a cone on the south flank of the mountain, slightly below the summit.
	www.stevequayle.com /News.alert/05_Cosmic/050201.AK.volcanoes.html (342 words)

	USGS Release: Lifting the Veil of Darkness (7/2/2003) (Site not responding. Last check: 2007-10-11)
		Local commerce was at a standstill, but in the words of the Anchorage Daily News, residents of the young frontier city exhibited a "calm and resigned attitude." Relief finally came 3 weeks later when nearly an inch of rain fell, washing the city and stabilizing the ash.
		July 9th marks the 50th anniversary of this sudden and dramatic eruption of Crater Peak, the active vent on Mount Spurr volcano.
		Mount Spurr volcano is on the northwest side of Cook Inlet, 80 miles west of Anchorage in the eastern Aleutian volcanic arc of Alaska.
	www.usgs.gov /newsroom/article_pf.asp?ID=176 (1527 words)

	Earth Hazards Exchange Program
		Mount Spurr is an ice-covered, andesite lava dome complex adjacent to Crater Peak, and has not erupted in historic times.
		Bluth, G.J.S., C.J. Scott, I.E. Sprod, C.C. Schnetzler, A.J. Krueger, L.S. Walter, and T.E.C. Keith, Explosive emissions of sulfur dioxide from the 1992 Crater Peak eruptions, Mount Spurr Volcano, Alaska, in T.E.C. Keith (ed), The 1992 eruptions of Crater Peak Vent, Mount Spurr volcano, Alaska, pp.
		Rose, W.I., A.B. Kostinski, L. Kelley, and T.E.C. Keith, Real-time C-band radar observations of 1992 eruption clouds from Crater Peak, Mount Spurr Volcano, Alaska, in T.E.C. Keith (ed), The 1992 eruptions of Crater Peak Vent, Mount Spurr volcano, Alaska, pp.
	www.geo.mtu.edu /EHaz/adamdurantinternship.htm (1427 words)

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