The volcano, Mount Spurr, a 11,100-foot peak across Cook Inlet from Anchorage, had been dormant for 39 years until a June 27 eruption. The eruption produced ash columns up to 13.5 km high and ashfall in several hundred km distance.... more 1953 eruption There were 3 main explosions, on 27 June, 18 August and 16-17 September. The caldera was formed by a late-Pleistocene or early Holocene debris avalanche and associated pyroclastic flows that destroyed an ancestral Spurr … The 1953 eruption of Mount Spur deposited 3-6 milimeters of ash on the city, causing short term pH and turbidity problems with the city's water supply (Wilcox, 1959). The pH level fell to 4.5 before returning to normal after a few … Only two eruptions have been recorded at Mt Spurr volcano, in 1953 and 1992. The ash began raining on Anchorage about 8 …
On 27 June, 1992, the Crater Peak vent on the south side of Mt. Spurr erupted in 1953 and 1992 in Alaska, U.S.A. Water Supply. 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. Spurr awoke from 39 years of dormancy and burst into sub-plinian eruption after 10 months of elevated seismicity. A large, subplinian eruption occurred in 1992 at Mt Spurr volcano. There were 3 main explosions, on 27 June, 18 August and 16-17 September. A large, subplinian eruption occurred in 1992 at Mt Spurr volcano.
Crater Peak has a summit crater that is itself slightly breached along the south rim; the north wall of the crater exposes the truncated remains of an older dome or lava lake. Anchorage is the largest city in Alaska, located 120 kilometers east of Mount Spurr. Two more eruptions followed in August and September. The eruption produced ash columns up to 13.5 km high and ashfall in several hundred km distance. The volcano lies 125 km west of Anchorage, Alaska's largest city and an important international hub for air travel. The Alaska Volcano Observatory (AVO) was able to warn … Spurr's two historical eruptions, from Crater Peak in 1953 and 1992, deposited ash on the city of Anchorage. Spurr-Crater Peak: 1953 & 1992.
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