Found 4 datasets matching "tephra-hazard zones".
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Volcanic eruptions are most likely to occur in the Pacific Rim states, which include Oregon. The primary danger area around a volcano covers an approximately 20-mile radius, although there is some...
Search relevance: 60.43 | Views last month: 3 -
The California volcano locations, threat rank and hazard zones data release contains two shapefiles for download or use as a web map service. The California Volcanic Center Locations shapefile was...
Search relevance: 46.54 | Views last month: 2