Copyright Information: All images are in the public domain and available for free. If you use this image, credit NOAA/NGDC, R.G. McGimsey, U.S. Geological Survey. |
Within the Crater Peak basin, a warm lake, approximately 500 m across, developed some time after the 1953 eruption. On June 11, 1992, the lake had a temperature of 59 degrees C and a pH of 2.5. A darkening of the lake color and upwelling zones, the largest about 5 m across is visible to the right in this view, indicated a possible addition of sulfur and an increased heat flux below the lake. Geysers of superheated water were observed streaming through talus on the north shore of the lake. An increased number of earthquakes had been detected below the volcano since August, 1991. On June 17, scientists from the Alaska Volcano Observatory (AVO) issued a notice about the increased likelihood of eruptive activity. Image Credit: R.G. McGimsey. U.S. Geological Survey June 27, 1992 Mount Spurr USA volcano Following 39 years of inactivity, Crater Peak vent on the south flank of Mount Spurr volcano burst into eruption at 7:04 a.m. Alaska daylight time (ADT) on June 27, 1992. The Municipality of Anchorage reported nearly $2 million in damage, office closures, and cleanup costs from the August eruption. In addition, there were numerous, small-scale losses incurred by businesses. No loss of life resulted directly from the eruptions. However, two heart attacks, one fatal, from shoveling ashfall were reported in Anchorage. Event Data:
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