what is the height of mount spurr
The volcano lies 130 km W of Anchorage and NE of Chakachamna Lake. It bogged down and had to be retrieved by one of the volcanologists monitoring it. SPURR VOLCANO (VNUM #313040) 61°17'56" N 152°15'14" W, Summit Elevation 11070 ft (3374 m) Current Volcano Alert Level: NORMAL Current Aviation Color Code: GREEN A possible outburst of water from beneath a glacier on the lower south flank of Mount Spurr was detected beginning about 11:20 AKST on September 11. Pinatubo (1991) was a 6, Mount St. Helens (1980) was a 5, Mt. Mount Spurr erupting August18, 1992 in Alaska. Mount Spurr is one of the most active volcanoes of Cook Inlet. Aira | 25 May-31 May 2022 | Continuing Activity Cite this Report Aira Kyushu (Japan) JMA reported that a very small eruptive event was recorded at Minamidake Crater (at Aira Caldera’s Sakurajima volcano) during 23-30 May. The volcano, which last erupted in 1989, rises to a height of 10,197 feet (3,108 meters) — or seven to seven and a half times the height of the Empire State Building. 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. Mount Spurr erupting August18, 1992 in Alaska. Mount Spurr, a prominent snow-clad peak of 11,000 feet altitude that is plainly visible from Cook Inlet, lies almost centrally in the region. Most of the time, however, the mighty mount is safe to hike and climb, although its higher … Riding on a cushion of compressed air, the sturzstrom landslide travelled 20 to 30 times the vertical fall height and resulted in the formation of beautiful Lake Manzanita, 3 km (2 miles) ... Dante was tried out at Mount Spurr’s Crater Peak. Mount Vernon, New York New Rochelle, New York Glen Falls, New York Schenectady, New York Newburgh, New York Middletown, New York Kingston, New York Union Town, New York Town Of Islip, New York Cattaraugus County, New York Town Of Cheektowaga, New York Schoharie County, New York Buncombe County, North Carolina North Carolina City … Mountain Metres Feet Location and Notes Risco Plateado: 4,999: 16,401: Argentina Mount Blackburn: 4,996: 16,391: Alaska, United States Santa Isabel: 4,950: 16,240 On the basis of the total ozone mapping . When an eruption ends or settles Mount Neacola (2873 m) 83.1 km: 5. Spurr (1992) was a 4. Spurr tephra has a much more equant sphericity [Neal … Walking has certain advantages over rolling[1], and on rough, steep escarpments a walking robot is well-suited. Box 1 includes the details about relevant variables driving the RT simulations (Section 2.1), with parameters in dark blue (red) being potential predictors (predictands) in the NN model; box 2 shows the structure of the NN model; and box 3 presents … The volcano is part of the Cascade Range. 11,070 ft. Mount Edison. Mt. The fall model (equation (6)) was fit using data that had an average shape factor of F = 0.4 whereas the Mt. / Alaska Volcano Observatory, U.S. Geological Survey ... eruption cloud height, duration of the eruption, and other factors. 11,020 ft. Mount Cardozo. At 3:30 pm an especially strong surge of ash-laden steam rose to 20,000 feet." Browse our listings to find jobs in Germany for expats, including jobs for English speakers or those in your native language. Spurr, an 11,070-ft-high (3,376-m) volcano 80 mi (129 km) W of Anchorage erupted several times in 1992 after a dormancy of 39 years. Oct 24, 2018 - The summit of Mount Spurr, the highest volcano of the Aleutian arc, is a large lava dome constructed at the center of a roughly 5-km-wide horseshoe-shaped caldera open to the south. 2.3. Bluth, David J. Schneider 2, Gerald G.J. ... at 11,413 feet, being the highest and Mount Spurr at 11,070 feet being the second highest. ... A moderate explosive eruption began on 27th June and produced an ash which drifted 200 km from the volcano to a height of 9 km. Eruption fears grow as Mount Etna spews car-sized rocks over Sicily. 125 km west of Anchorage, Alaska. Pinatubo Eruption; 2049 Los Angeles Asteroid Impact; Hypothetical Events ... 2054 Martian cyclone season; Winter Storm Ghidorah; 2017 Eruption of Mount Saint Helens; 2017 Mount Spurr Eruption; August 2nd, 2016 Egyptian Tornado; December 21, 2016 Sun Prairie tornado outbreak; Hypothetical Disasters. Dante II entered the active crater of Mount Spurr, Alaska in July 1994. One map is generated showing the areas where another erup-tion at any of the 4 volcanoes would be most devastated. 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. No other historic eruptions have been documented. UNK the , . spectrometer SO 2 cloud-tracking and wind data, the SO 2 . Illustration of the neural network model generation to predict total NO 2 column density from satellite radiances. Mount Spurr The Aleutian Arc's tallest spring of gushing lava, Mount Spurr arrives at a gigantic 3,374 meters in stature and can be seen as in the southwest of the state, not a long way from Anchorage. Mount Redoubt, or Redoubt Volcano, is an active stratovolcano in the largely volcanic Aleutian Range of the state of Alaska. [1997] have determined Mount Spurr. Browse Henry County Local obituaries, conduct other obituary searches, offer condolences/tributes, send flowers or create an online memorial. Earth's crust and upper mantle is divided into major plates and minor plates, sort of like pieces in a jigsaw puzzle. 1992 Eruptions of Mount Spurr. Often, the height of an eruption column is a good indicator of the intensity of the ash emission. Credit: R. McGimsey / US Geological Survey. The deposits at the most proximal location thin with increasing plume height while the distal sites thicken. Results subjectively comparing model ash cloud forecasts with satellite imagery for three separate 1992 eruptions of Mount Spurr in Alaska have been most encouraging. ... and created ash plumes that reached 6 km in height. Students learned about the U.S. Army … The eruption of 18 August 1992 ejected andesitic material to a height of 14 km above sea level. The August Crater Peak eruption was already stud-ied using Ash3d (Schwaiger et al., 2012) and therefore not included here, reducing the total to three. Mount Saint Augustine, Mount Redoubt, Mount Iliamna, and Mounts Spurr and Crater Peak (one volcano with two vents). . The two faces of Mount Hood. Coombs and others (2006) stated that the overall effect of the hydrothermal activity (including water/debris flow releases from the summit) on the glacial system of Spurr were likely minimal, pointing out that the volume of water released was relatively small and probably easily accommodated "without significant modification of the icemass." It is about 12 miles (19 km) around. Enter the email address you signed up with and we'll email you a reset link. DOI: 10.1029/2010JB007620 Corpus ID: 53021529. In the wake of the 1980 eruption of Mount St. Helens, Mount Spurr was chosen as one of several volcanoes for The Crater Peak/Spurr volcanic ash cloud was observed by weather radar to have a cloud top height of about 14 km [Rose et al., 1995a]. The sample used in the study, Ashton 57, was collected 275 km southeast of the volcano (McGimsey et al., 2001). Unformatted text preview: Mount Spurr The Aleutian Arc’s tallest volcano, Mount Spurr reaches a colossal 3,374 meters in height and can be found in the southwest of the state, not far from Anchorage.In both 1953 and 1992, it explosively erupted, coating the nearby city in ash and debris. Maximum column height, km ----- 14.5 13.7 13.9 Time of maximum height, ADT ----------- 10:23 a.m. 4:55 p.m. 2:21 a.m. Anchorage International Airport Information Mount Torbert (3479 m) 14.9 km: 2. Near Mount Spurr Volcano, Alaska by R.S March, L.R. Maj. Mark DeRocchi, deputy commander of the Alaska District, and a few other Corps employees visited with students of Mount Spurr, Ursa Major and Ursa Minor Elementary schools during the week of Nov.18-22 to encourage their studies in science, technology, engineering and mathematics, also known as STEM. Mount McKinley Weather (Days 0-3): The weather forecast for Mount McKinley is: A moderate fall of snow, heaviest on Thu afternoon. Volcano summit height; Eruption date and time; Eruption duration; Ash column height; Ash reduction level (none-small-medium-large) Preset input is a unit source (1 g) since the actual amount is not known in real-time. It depicts the height of Dante II’s legs, each on a different line, over a period of time. 11,070 ft. Mount Edison. Volcanic plume height measured by seismic waves based on a mechanical model @article{Prejean2011VolcanicPH, title={Volcanic plume height measured by seismic waves based on a mechanical model}, author={S. Prejean and E. Brodsky}, journal={Journal of Geophysical Research}, year={2011}, volume={116} } Shown in Figure 1, it measured gasses and tem-peratures, and observed fumaroles on the crater floor. Mount Cleveland, located in the central Aleutian Islands, has been in a state of volcanic unrest since … The summit of Mount Spurr, the highest volcano of the Aleutian arc, is a large lava dome constructed at the center of a roughly 5-km-wide horseshoe-shaped caldera open to the south. Mount Susitna (1340 m) 83.0 km: 4. The deposits at the most proximal location thin with increasing plume height while the distal sites thicken. Mount Augustine and Mount Douglas complete this eruptive chain. Mt Redoubt (2788 m) 94.5 km: 7. Turn off water supply to the faucet before you initiate your work. The eruption produced ash columns up to 13.5 km high and ashfall in several hundred km distance. Mountain Metres Feet Range Location and Notes Mount Everest: 8,848: 29,029: Himalayas Nepal/China : K2: 8,612: 28,255: Karakoram Pakistan/China Kangchenjunga: 8,586 June 15, 1991, it erupted, resulting in the second-largest eruption of the 20 th century. Winds increasing (light winds from the SW on Thu morning, near gales from the NNW by Fri morning). and truncates an ancestral stratovolcano. The volcano unrest event at Mt. 10,860 ft. Mount Nagishlamina. The model calculates transport and dispersion of volcanic ash from an initial ash cloud that has reached its maximum height within 3 h of eruption time. 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 Crater Peak and Mount Spurr are located approx. New eruptions of Mount Rainier will most likely start with steam and ash explosions at the summit, and progress to the effusion of a small lava flow or the disintigration of steeply sloping lava flows as avalanches of hot rock and gas called a pyroclastic flow. Mayo, and D.C. Trabant OPEN FILE REPORT 86-137 Fairbanks, Alaska 1986. ... Mount Spurr, Alaska. ... ash-plume height, and types of hazardous phenomena. "On July 10 at 5:00 am the vent was only steaming. 10,896 ft. Mount Gerdine. The present Mt. 10,860 ft. Mount Nagishlamina. It is potentially one of the most dangerous volcanoes in Alaska. The caldera was formed by a late-Pleistocene or early Holocene debris avalanche and associated pyroclastic flows that … Therefore, PUFF may provide valuable information for studying the eruption of 22 July 1998 at Mount Etna. Spurr, Alaska, which occurred between 2002 and 2006, was characterized by increased seismicity and heat transfer that … Credit: R. McGimsey / US Geological Survey. The Crater Peak/Spurr volcanic ash cloud was observed by weather radar to have a cloud top height of about 14 km [Rose et al., 1995a]. The exotic seismic sources are non-earthquake seismic sources such as landslide, debris flows, dam collapses, floods, and avalanches that generate seismic signals but are rarely included in common earthquake catalogs. 10,374 ft. ... also known as topographic prominence or relative height, is a measure of how distinct a peak is from other peaks. The U.S. Department of Energy's Office of Scientific and Technical Information Only two eruptions have been recorded at Mt Spurr volcano, in … Crater Peak, on the southern flank of Mount Spurr, is located 130 km west of Anchorage, Alaska. 10,771 ft. Mount Chichantna. Local time: June 06, 2022 2305 AKDT (June 07, 2022 0705 UTC) The original volcano was an andesitic stratovolcano. A plinian-type explosive eruption from the Crater Peak vent (hidden beneath clouds) on Mount Spurr, Alaska, sent an eruption column to a height of about 18 km above sea level. The ash plume height reaching more than 40 km (28 mi) high and ejecting more than 10 km 3 of magma, classifying it as plinian/ultra plinian eruption style and VEI 6 in eruption size.. A complicating factor in the dispersal of ash was at the same … 61.30 N, 152.25 W summit elevation 3374 m stratovolcano and explosion caldera Mt Spurr Volcano is located 130 km west of Anchorage and NE of Chakachamna Lake. In 1993, seismicity at Mount Spurr continued to decline from 1992 eruptive levels and on The caldera was formed by a late-Pleistocene or early Holocene debris avalanche and associated pyroclastic … A mega-colossal event would be an 8 (Yellowstone, 640,000 BP). The Alert Level remained at 3 (on a 5-level scale), and residents were warned to … Mount Iliamna, Augustine Volcano, Mount Redoubt and Mount Spurr, Anchorage’s closest neighbor volcanoes have an explosive, active history. Juhle and Coulter (1955) state that the eruption continued with steam and small bursts of ash from July 11 to July 16, 1953. Ernst 3, Colleen M. Riley, Lydia J. Henderson 3, Robert G. McGimsey 2, Department of Geological Engineering and Sciences, … Inputs are eruption source parameters such as plume height, mass eruption rate, duration, and mass fraction of fine ash (Mastin et al., 2009). ... AVHRR 3.7 hour old September Spurr cloud imaged at 1240 UT … cloud altitude was estimated at … Height 545 m (1,788 ft) Timezone AKST - summer (DST) AKDT GeoNames 5875002: Bukid ang Mount Spurr sa Tinipong Bansa. Pinatubo is a stratovolcano in the Philippines. 10,896 ft. Mount Gerdine. Three hours after onset of eruption, the leading edge of the plume was 300 km southeast of Mount Spurr, and its area had grown to 21,000 square km. A satellite image 44 minutes after the onset of the eruption shows the plume extending 80 km east from the volcano over an area of 20,000 square km. The major plates are the Eurasian Plate, Indo-Australian Plate, Pacific Plate, Nazca Plate, South American Plate, African Plate, North American Plate, Philippine Plate, Antarctic Plate, and Scotia Plate. Numerous assumptions were required to project exposures and calculate risks over an extended period of time: height above ground ... Eruption period of Mount Spurr: Per 10 μg/m 3: 3–6% ↑ asthma, 1–3% ↑ upper respiratory infection, but not after volcano: Hickling et al. 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 fall model (equation (6)) was fit using data that had an average shape factor of F = 0.4 whereas the Mt. So Regal called us to either offer a refund, reschedule if . The fall model (equation (6)) was fit using data that had an average shape factor of F = 0.4 whereas the Mt. Pre-r a Example calculation: 17 September 1992 Crater Peak eruption, Mt. Spurr (1992) was a 4. ... and created ash plumes that reached 6 km in height. The flow appears to have been a … Mount Spurr volcano, 3,374 m (11,070 ft) high, is visible on the skyline 125 km (78 mi) west of Anchorage, Alaska. 10,771 ft. Mount Chichantna. Step 2: Remove the Old Faucet. All the latest science news about mount redoubt from Phys.org ... being the highest in the range and Mount Spurr at 11,070 feet being the second highest. It is the hishest volcano in the Aleutain arc. It may have been taken from Tongatapu, it’s where most people live, although I don’t know for sure. The Capitol Theater in Wheeling West Virginia is a unique experience from start to finish. Values of such ... cloud of Mount Spurr in 1992 came from partic les 2 to 20 mm in diameter and with a total particle mass concentration of <0.01 to 1 g/m 3. The volcano lies 130 km W of Anchorage and NE of Chakachamna Lake. ... at 11,413 feet, being the highest and Mount Spurr at 11,070 feet being the second highest. A well-known crater lake, which bears the same name as the geological feature, is Crater Lake in Oregon.It is located in the caldera of Mount Mazama.It is the deepest lake in the United States with a depth of 594 m (1,949 ft). the August and September 1992 eruptions of Mount Spurr, Alaska. A large, subplinian eruption occurred in 1992 at Mt Spurr volcano. A plinian-type explosive eruption from the Crater Peak vent (hidden beneath clouds) on Mount Spurr, Alaska, sent an eruption column to a height of about 18 km above sea level. Satellite images have been used to validate the accuracy of PUFF which has shown to be satisfactory for intermediate level eruptions, such as Rabaul volcano in 1994, Klyuchevskoy in 1994, and Spurr in 1992 [Searcy et al., 1998]. 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 Alaska’s largest city for several days. For a maintained eruption, Sparks et al. Hiking info, trail maps, and trip reports from Mount Spurr (11,070 ft) in the Aleutian Range of Alaska Spurr tephra has a much more equant sphericity [Neal et al., 1995; Riley et al., 2003]. 10,751 ft. Mount Goode. AVO reported that a minor increase in seismicity at Spurr was detected at about 0500 on 25 June, lasted about 45 minutes, and was characterized by several discrete M1earthquakes. The signals recorded were consistent with seismic energy generated by an energetic flow of water, possibly indicating a glacial outburst flood on the lower S flank. There were 3 main explosions, on 27 June, 18 August and 16-17 September. The distance to the horizon for an observer at Height (h) above the surface of a sphere of Radius (R) can be found with: ... 20,310 foot tall Denali is the same apparent height of Mount Susitna, which is 65.4 km away but only 4117 feet high and Mount Spurr which is 136.7 km away and 11070 foot high just barely peeks over the line? Before the ash formed that lower umbrella that extended through the stratosphere and doesn’t seem present in the photo. The August Crater Peak eruption was already stud-ied using Ash3d (Schwaiger et al., 2012) and therefore not included here, reducing the total to three. cloud altitude was estimated at … Mount Spurr weather forecast updated daily. It is the surface expression of a satellite vent that formed 10,000-20,000 B.P. On the basis of the total ozone mapping . A mega-colossal event would be an 8 (Yellowstone, 640,000 BP). Mount Redoubt, or Redoubt Volcano, is an active stratovolcano in the largely volcanic Aleutian Range of the state of Alaska. The ash particle distribution is described below. Plume height (H) constrains the lower and upper limits of the ash particles' release height and, therefore, significantly impacts both the vertical and horizontal structure of the simulated ash cloud. 11,020 ft. Mount Cardozo. Use this relief map to navigate to mountain peaks in the area of Mount Spurr. Crater Peak is a basaltic-andesite stratocone which has been active for at least the last 5,000 years. Current conditions, warnings and historical records ... Rainfall; Swell Height; Tide Height; Wind Speed; Distance; Pressure; 0 Now. Measured height of instrument above monument, H.; vertical foresight angle, V ; vertical backsight angle, V July 1981. 10,751 ft. Mount Goode. If coming from the east on l-70 get in left lane upon entering Wheeling tunnel onto main street. Rose, Gregg J.S. Mount Spurr The Aleutian Arc's tallest spring of gushing lava, Mount Spurr arrives at a gigantic 3,374 meters in stature and can be seen as in the southwest of the state, not a long way from Anchorage. Mount Spurr, 11,070 ft, last erupted in 1992, Mount Redoubt is part of this chain, and directly across from the campground is Mount Iliamna, 10,016 ft surrounded by glaciers. Figure 4 presents data recorded during Dante II’s descent into Mount Spurr. Locate the supply pipes below the laundry tub that supply the water from the connections in the wall to the faucet. The Aleutian Arc's tallest volcano, Mount Spurr reaches a colossal 3,374 meters in height and can be found in the southwest of the state, not far from Anchorage.In both 1953 and 1992, it explosively erupted, coating the nearby city in ash and debris. Mount Spurr. NOAA weather radar, satellite and synoptic charts. Mount Spurr forms the southern buttress of the Tordrillo Range, with an active vent on Crater Peak below the summit. Crater incandescence was visible at night during 23-27 May. of and in " a to was is ) ( for as on by he with 's that at from his it an were are which this also be has or : had first one their its new after but who not they have Snow and ice cover the north side. ria: the 18 May 1980 eruption of Mount St. Helens, the 16– 17 June 1996 eruption of Ruapehu, and the 16–17 September and 18 August 1992 eruptions of Crater Peak (Mount Spurr), Alaska. Step 1: Turn Off Water Supply. Local time: June 06, 2022 1645 AKDT (June 07, 2022 0045 UTC) 2025 Mt. crater of Mount Spurr, Alaska. The height of the umbrella edge might be something like 30-35 km above the ground, something to take into account. Step 3: Fit the New Faucet. Mount Augustine Volcano. Mount Spurr, Alaska (fig. Pinatubo (1991) was a 6, Mount St. Helens (1980) was a 5, Mt. A second tephra cloud formed on July 10, 1953, according to Wilcox (1959). Dinglishna Hill (129 m) 89.1 km: 6. A 1989 – 90 series of eruptions caused more than $ 160 million in damages and lost revenue, the second most costly eruption in U.S. history. Spurr, Alaska. DOI: 10.1029/2010JB007620 Corpus ID: 53021529. Volcanic plume height measured by seismic waves based on a mechanical model @article{Prejean2011VolcanicPH, title={Volcanic plume height measured by seismic waves based on a mechanical model}, author={S. Prejean and E. Brodsky}, journal={Journal of Geophysical Research}, year={2011}, volume={116} } ria: the 18 May 1980 eruption of Mount St. Helens, the 16– 17 June 1996 eruption of Ruapehu, and the 16–17 September and 18 August 1992 eruptions of Crater Peak (Mount Spurr), Alaska. Mount Spurr Volcano. Methods The first step to this final hazard map was to find and obtain the data necessary. ... 1.5 times the height of Pinatubo; Tonga’s sunsets continue. Hot, glowing lava flow from Kïlauea Volcano burying a road on the Island of Hawai’i in 1983. Photograph by D. Turner, University of Alaska Fairbanks , 1986. 10 other mountain peaks closest to Mount Spurr: 1. / Alaska Volcano Observatory, U.S. Geological Survey ... eruption cloud height, duration of the eruption, and other factors. The Crater Peak vent on the south flank of the volcano was the site of three subplinian erupt ions in 1992 (see cover page; Eichelberger and others, 1995 and references therein). It is about 12 miles (19 km) around. The radar did not detect distal parts of the As shown here, prior to its 1992 eruptions, Crater Peak, a satellite vent of Mount Spurr volcano, contained a warm lake about 100 m (330 ft) across. In groups of four (legs 0,1,2,3 and 4,5,6,7), legs raise up, hold in the air during body motion, and then lower down to support. The VAAS alert issued at 1940 UTC by the AAWU gave an estimated height of 30 000 ft for both the NNE and SSE plumes. Volcanic Ash Modeling [10] Volcanic eruptions can behave in many ways [Sparks et al., 1997]. This 10, 197 -foot massif about 110 miles southwest of Anchorage and 50 miles west of Kenai is one of the most active volcanoes in Alaska. 1) has been identified by the U.S. Geological Survey as being among those volcanoes in the United States with the greatest potential for eruption in the next 50 years (L. Laird, 1980 , written cornmication ) . Spurr grew in the center of the old caldera. April 24, 2001 final draft, J Geology Observations of Volcanic Clouds in their first few days of atmospheric residence 1: the 1992 eruptions of Crater Peak, Mount Spurr volcano, Alaska William I. ... Foaming walls of water may reach a height of 6 feet and is very dangerous. The initial cloud-height estimates of 30 000 ft for the NNE plume and 17 000 ft for the SSE plume came from an AVO information release issued at 1930 UTC. Maximum column height (km asl) 14.5 13.7 13.9 2 Mean eruption rate (m3/s) 820 1120 1160 3, 4, 6 How to Replace a Laundry Faucet. Mount Hayes (2788 m) 37.7 km: 3. It is potentially one of the most dangerous volcanoes in Alaska. The primary source of the tephra and ash layers was likely the 1992 eruptions of Crater Peak (Spurr's satellite cone and youngest vent) and possibly the 1989-90 eruptions of Mount Redoubt (Coombs and others, 2006). Some component of the debris was also likely sourced from the summit crater floor and wall rocks. Snow/ice melts from summit crater. Mt. The Alaska Volcano Observatory website (AVO) includes complete information about volcanoes in Alaska.. Great Sitkin, located in the central Aleutian Islands, has been in a state of volcanic unrest since February 26, 2020.Seismicity is above background levels. 10,374 ft. ... also known as topographic prominence or relative height, is a measure of how distinct a peak is from other peaks. spectrometer SO 2 cloud-tracking and wind data, the SO 2 . 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. Extremely cold (max -28°C on Wed afternoon, min -31°C on Wed night). At times, for Mount Ruapehu, New Zealand: Walking does pose unique problems; generating a coordi- House damaged by debris from a lahar (volcanic mudflow) during the May 18, 1980, eruption of Mount St. Helens, Washington. Spurr tephra has a much more equant sphericity [Neal et al., 1995; Riley et al., 2003].
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