Volcanic Gas
Volcanic Gas
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Volcano Hazards in the Cascade Range
The U.S. Geological Survey's Cascades Volcano Observatory strives to serve the national interest by helping people to live knowledgeably and safely with volcanoes in WA, OR, and ID.
Volcanic Gas Monitoring Gives Clues about Magma Below
Monitoring the emission rates and chemical composition of volcanic gases can offer important clues to the inner workings of volcanoes.