description Mount Spurr fumaroles Overview
Mount Spurr fumaroles are volcanic gas and steam vents associated with the Mount Spurr volcanic complex in Alaska, including the Crater Peak area within its caldera. Scientific monitoring has measured sulfur dioxide and studied fumarole gas chemistry, and such observations documented volcanic unrest before the 1992 eruptions at Crater Peak. The vents are therefore used by volcanologists as surface indicators of heat, fluid movement, and magmatic activity.
help Mount Spurr fumaroles FAQ
Where are the Mount Spurr fumaroles located?
The Mount Spurr fumaroles are volcanic gas and steam vents associated with the Mount Spurr volcanic complex in Alaska. The Crater Peak area within the caldera is one of the associated locations.
What comes out of Mount Spurr fumaroles?
They release steam and volcanic gases from the Mount Spurr system. Scientific monitoring has included measurements of sulfur dioxide and studies of the chemical makeup of fumarole gases.
Why do scientists monitor the Mount Spurr fumaroles?
Fumarole gas chemistry can document changes in a volcanic system. At Mount Spurr, observations of sulfur dioxide and other gases help scientists study activity around the complex and Crater Peak.
Are Mount Spurr fumaroles the same as lava flows?
No. A fumarole is a vent for volcanic gas and steam, while a lava flow is molten rock moving at the surface. The Mount Spurr features described here are gas and steam vents.
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