Seismicity continued through early January beneath the S flank's Crater Peak, source of the 1992 eruptions. Coombs, M.L., Neal, C.A., Wessels, R.L., and McGimsey, R.G., 2006, Geothermal disruption of summit glaciers at Mount Spurr Volcano, 2004-6: An unusual manifestation of volcanic unrest: U.S. Geological Survey Professional Paper 1732-B, 33 p. Doukas, M.P., and McGee, K.A., 2007, A compilation of gas emission-rate data from volcanoes of Cook Inlet (Spurr, Crater Peak, Redoubt, Iliamna, and Augustine) and Alaska Peninsula (Douglas, Fourpeaked, Griggs, Mageik, Martin, Peulik, Ukinrek, and Veniaminof), Alaska, from 1995-2006: U.S. Geological Survey Open-File Report 2007-1400, 16 p. McGimsey, R.G., Neal, C.A., Dixon, J.P., and Ushakov, S., 2008, 2005 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2007-5269, 94 p. Neal, C.A., McGimsey, R.G., Dixon, J.P., Manevich, A., and Rybin, A., 2009, 2006 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2008-5214, 102 p. Neal, C.A., McGimsey, R.G., Dixon, J., and Melnikov, D., 2005, 2004 Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Open-File Report 2005-1308, 71 p. Information Contacts: Bruce Hopper, Game McGimsey, and Christina Neal, Alaska Volcano Observatory (AVO), a cooperative program of a) U.S. Geological Survey (USGS), 4200 University Drive, Anchorage, AK 99508-4667 USA (URL: http://www.avo.alaska.edu/), b) Geophysical Institute, University of Alaska, PO Box 757320, Fairbanks, AK 99775-7320, USA, and c) Alaska Division of Geological & Geophysical Surveys (ADGGS), 794 University Ave., Suite 200, Fairbanks, AK 99709, USA (URL: http://www.dggs.alaska.gov/); Digital Globe, Inc. (URL: http://www.digitalglobe.com/). - ACXAPH from Alamy's library of millions of high resolution stock photos, illustrations and vectors. They also interpreted the main source of the debris carried in the debris flows to be melted glacial ice containing layers of tephra and ash. In September, the crater lake was observed to be completely ice-free, and most likely remained as such through mid January 2006. Airplane pilots reported ash NW of Regina, Saskatchewan (one layer about 600 m thick, centered at 9 km altitude, and a more intense layer to 11.5 km), near Calgary, Alberta (6.5-7.5 km), near Pierre, South Dakota (10-12.5 km), and later in the day near Mason City, Iowa (13 km), Chicago, and from Milwaukee to Windsor, Ontario (8 km). After initially moving N, the plume turned toward the S and E, and had spread over western and central Canada by 29 June, when its narrow leading edge was over southern Lake Winnipeg, roughly 3500 km SE of the volcano. Advertisement: This definition appears very frequently. Miller T P, McGimsey R G, Richter D H, Riehle J R, Nye C J, Yount M E, Dumoulin J A, 1998. Like Mount Spurr, if Makushin Volcano erupts, it has the potential to be disruptive to air travel and dangerous to aircraft. Several ice-carved post-caldera cones or lava domes lie in the center of the caldera. Focal depths from early November through early December ranged from above sea level to 44 km. Earthquakes continued to occur beneath Spurr at rates of several per day through mid-November. Its small turquoise-colored crater lake (previously measured at 55°C), appeared darker than before and thermal upwelling was visible at the E end of the lake. Information Contacts: U.S. Geological Survey Alaska Volcano Observatory (AVO), a cooperative program of the USGS, University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys (URL: http://www.avo.alaska.edu/). AVO staff took an overflight of the volcano on 18 October and reported that the summit ice cauldron persisted without appreciable change of its geometry or of the surrounding crevasses. | October A Notice to Airmen warned aircraft to avoid the immediate vicinity of the volcano. Mount Spurr volcano consists of a breached stratovolcano, a lava dome at the summit of Mount Spurr, and Crater Peak vent, a small stratocone on the south flank of Mount Spurr volcano. Spurr remained at Concern Color Code Yellow. 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 likely (or at least nearly) contemporaneous lake level drop and debris flow on 2 May were not associated with any significant ice collapse into the cauldron lake; Coombs and others (2006) thus concluded that the debris flows were the result of widening of englacial or subglacial pathways by erosion, heating, or glacial flow (cross-section, figure 20). Like Mount Spurr, if Makushin Volcano erupts, it has the potential to be disruptive to air travel and dangerous to aircraft. Lubis, A. M., 2014. The summit melt pit was estimated to be approximately 250 m in diameter, and it continued to widen as the summit snow pack collapsed into the lake. An example of this volcano is Mount Fuji in Japan. Observations and photography during the week revealed that the ice pit located near the summit had enlarged substantially (currently about 150 m x 170 m), presumably as the roof of the meltwater basin continued to subside and collapse. 43, p. 2. Mt Spurr volcano is the highest volcano in the Aleutian Volcanic Arc. About 0.3 cm of sand-sized ash fell at Finger Lake, roughly 100 km N of the volcano. By continuing to browse this site you agree to us using cookies as described in About Cookies.. Mount Vesuvius is a composite volcano. This 11,070-foot volcano last erupted in September of 1992, when it dusted the region with an eighth-inch layer of volcanic ash and shut down the regular life in Alaskaâs largest city for several days. Mount Spurr forms the southern buttress of the Tordrillo Range, with an active vent on Crater Peak below the summit. A landslide occurred on the SE side of Crater Peak, sometime after a morning snowfall on 28 October but before the 29 October overflight. Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. From Wikipedia, The Free Encyclopedia Mount Spurr is a stratovolcano in the Aleutian Arc of Alaska, named after United States Geological Survey geologist and explorer Josiah Edward Spurr, who led an expedition to the area in 1898. 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. A swarm of about 12 volcanic earthquakes occurred between 1400 and 1415, and may have been associated with increased steaming. Spurr remained at Concern Color Code Yellow. Compared to Mauna Loa, the biggest volcano. Seismicity at 5-15 km and <5 km depths remained low, but above background levels, in mid-February. 2018 Eruption of Mount Spurr VEI 5 eruption (USGS) [[Image:|235px|center|]]' Volcano Mount Spurr Date November 5, 2018 Time 2000 UTC Eruption type Plinian Location Alaska, USA Fatalities 12 Damages$100 million (2017 USD) Other impacts â¦ The summit crater and cauldron remained active after most other signs of unrest had declined. Some earthquakes were interpreted to reflect the beginning stages of volcanic unrest. Alaska's volcanoes, northern link in the ring of fire. According to AVO during 22-30 July elevated levels of seismicity continued to be recorded at Spurr, with approximately 10-20 earthquakes occurring daily beneath the summit. Elevated seismicity, increased carbon dioxide emissions, and melting of the ice cap. In some cases additional feature type, elevation, or location details are provided. AVO personnel visited Crater Peak vent on 16 September and detected no obvious increase in thermal activity or seismicity by late afternoon. Maintaining the volcano and earthquake news sections on this website, the free Volcano Webcams tool and interactive map widget is a free-time, both time- and server cost intensive effort. No unusual activity was observed on satellite or web-camera images. The lake level had decreased since 25 April, indicating outflow of water from the lake which may have coincided with emplacement of the recent debris flow. Mount Spurr is a volcano in the Aleutian Volcanic Arc of Alaska. Synonyms of features appear indented below the primary name. May 2005 debris flow. Maximum reported elevations were about 10 km. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility. August 16, 2000 TIFF The glacier-covered Redoubt Volcano is one of many that line Alaskaâs southern shores. Areas of loss of InSAR coherence are not colored. The 1992 eruptions of Crater Peak vent, Mount Spurr Volcano , Alaska Bulletin 2139 By: Terry E.C. However, seismicity remained at normal levels and nothing unusual was noted in satellite images of the area. During 9-16 September, seismicity at Spurr remained above background levels, but there were several indications that the level of unrest was declining. Anchorage International Airport was closed at about 2020 and remained closed for much of 19 August, as cleanup efforts were hampered by wind redistribution of the ash. The debris avalanche traveled more than 25 km SE, and the resulting deposit contains blocks as large as 100 m in diameter. the glacier-covered stratovolcano is located 130 km west of Anchorage and NE of Chakachamna Lake. Snow/ice melts from summit crater. Elevated levels of seismicity continued to be recorded at Spurr during 8-14 January. An hour of relative quiescence followed, although a pilot reported glow over the Crater Peak area and a dark plume moving NE at 2311. Henning R A, Rosenthal C H, Olds B, Reading E (eds), 1976. Dark ash engulfed the entire S portion of the edifice, suggesting that the source of the tephra was in the general vicinity of Crater Peak, the S-flank vent at ~2,300 m elevation that was the source of the 27 June explosive episode. The collapse pit appeared to contain standing water of indeterminable depth. Seismicity rates have been relatively constant in the last week at roughly 5 locatable earthquakes per day. Intermittent, banded tremor alternated with periods of sustained tremor during the next several days, while fieldwork revealed continued emission of a roughly 1-km white plume from the S flank's Crater Peak vent. Continuous tremor began at 1204, and a swarm of volcano-tectonic earthquakes started at 0300 the next morning. No aircraft encounters with the ash cloud were reported. A temporary dam formed on the river, but was breached by 1000. Find. ... Small local earthquakes continue to appear on seismic recordings. Seismicity remained above background levels at Spurr during 30 December to 6 January. 2005: January This type of volcano forms over hundreds of thousands of years by eruptions. Gas and heat emissions remained at elevated levels, and minor steaming continued from the summit "melt/collapse pit." The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Volcanoes-from-AVO-02. | November the glacier-covered stratovolcano is located 130 km west of Anchorage and NE of Chakachamna Lake. Our expert volcanologists and photographers offer unique travel experiences: Seismicity continues to be slightly elevated. Source: US Geological Survey Alaska Volcano Observatory (AVO), Summit ice cauldron, debris flows through 2006; fumarolic activity continues. The overall rate of seismicity gradually declined during the previous several months, further suggesting a reduced level of activity. With the exception of an earthquake swarm during 11-12 April, seismicity continued to decrease, and reached background levels by May 2006. Clear satellite and web camera views of the volcano showed no unusual activity. Time intervals spanned by the interferograms are (yyyymmdd): a 20040804?20060705 from ERS ascending track 121 b 19970708?20050701 from ERS ascending track 350 c 20020715?20050704 from ERS ascending track 393, and d 20040915?20050831 from Envisat descending track 229. Later satellite imagery suggested that the fumarole field had been covered as the summit crater filled with snow and ice during the first part of the 2011-2012 winter (figure 22), but there have been no observation flights to confirm this as of 24 February 2012. Although the rate of seismicity is greater than typical background levels, AVO has found no indication that an eruption is imminent. Reference. Mount Spurr Volâ¦ Mount Spurr Volcano. Spurr, ~ 125 km W of Anchorage across Cook Inlet, became restless in recent months. It is composed mostly of andesite. No unusual activity was observed in satellite or web camera images. The landslide formed a 30-m-wide scar near 2,000 m altitude and carried debris to ~1,000 m elevation. Spurr grew in the center of the old caldera. The present Mt. A swarm of shallow seismic events began at about 0200 on 9 November and strengthened through the day. 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. A depression in the summit ice was observed in its early stages in June 2004 (figures 12 and 13). The volcano lies 130 km west of Anchorage and NE of Chakachamna Lake. This level of activity had remained relatively constant for the last several weeks. Neal and others (2005) reported that measurements made on 10 August and 30 October 2004 revealed enlargement of the ice cauldron from ~65 m x 95 m to ~130 m x 130 m in two and a half months' time. Volcanic tremor of variable amplitude persisted, declining more gradually than after the 27 June and 18 August episodes. The 1992 eruptions of Crater Peak vent, Mount Spurr volcano, Alaska. Spurr remained at Concern Color Code Yellow. Stratovolcanoes Stratovolcanoes form in subduction zones as towering volcanoes like Mount Fuji in Japan, Mount Rainier in Washington, and Mount Spurr in Alaska. These observations further suggest that magma resides beneath the volcano. It is sponsored by the, Information about large Quaternary eruptions (VEI >= 4) is cataloged in the, EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. Table 2. Spurr remained at Concern Color Code Yellow. (Left column) observed and (right column) modeled deformation images of the Strandline Lake area associated with the 1996?1998 seismic swarm. Seismicity reached a maximum of 70 earthquakes on 14 August, then declined to about 15 earthquakes per day the rest of the week. Effects in Anchorage were limited to a very fine dusting of ash and hazy conditions in parts of the city. If you find the information useful and would like to support us, and help keep it alive and improve it, please consider We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email. Table 1. A localized increase in seismicity was recorded at about 0700 on 6 June, centered immediately beneath Crater Peak. Pilot reports indicated that the top of the cloud was at about 9 km altitude. Mount Spurr is a stratovolcano in the Aleutian Arc of Alaska, named after United States Geological Survey geologist and explorer Josiah Edward Spurr, who led an expedition to the area in 1898.The Alaska Volcano Observatory (AVO) currently rates Mount Spurr as Level of Concern Color Code Green. Continued heat flux was indicated by vigorously upwelling water in the "melt pit lake" (the nearly ice free lake at the bottom of the "ice cauldron"), rapid melting of ice and snow that had fallen into the melt pit lake, and minor steaming from rock surfaces and small melt pits in the vicinity of the summit dome and Crater Peak cone, 3 km S of Spurr's summit. It is the hishest volcano in the Aleutain arc. References. The summit area was clear, but AVO geologists filmed violently roiling, turbulent pulses of black ash ascending through the weather cloud deck at ~2,400 m altitude. Mt. Spurr remained at Concern Color Code Yellow. A distinct increase in seismicity occurred on 26 December when 25 earthquakes were recorded. However, AVO found no evidence of an eruption in seismic or satellite data, subsequent pilot reports, or from visual observations. , Olds B, Reading E ( eds ), 245-257 active on! In seismicity occurred between 6-8 November when as many as three shallow earthquakes per.. 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