Tephra hazard zones
St. Helens, United States, 1978
Figure 8 in: Crandell, D.R. & Mullineaux, D.R. (1978). Potential Hazards from Future Eruptions of Mount St. Helens Volcano, Washington. U.S. Geological Survey, Bulletin 1383-C, 26 p. https://doi.org/10.3133/b1383C
This map was produced by an official agency, but is NOT the most recent, most complete, or main operational map.
For the current operational hazard map, please consult the proper institutional authorities.
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Crandell, D.R. & Mullineaux, D.R. (1978). Potential Hazards from Future Eruptions of Mount St. Helens Volcano, Washington. U.S. Geological Survey, Bulletin 1383-C, 26 p. https://doi.org/10.3133/b1383CMap Set
https://doi.org/10.3133/b1383C
Other Maps In Set:
Map Data
Map ID 1175 Hazard Process(es) Tephra fall Hazard Zone Presentation Single hazard: A single hazard process is represented on a main map panel Temporal Scale Background, or long-term, map Spatial Scale Regional Publication Format Figure in a hazard assessment or mitigation plan Zonation Method(s) Geologic history Zonation Model(s) Scenario(s) Considered Season or weather; Specific past eruption Hazard Zone Label(s) Qualitative relative probability (e.g. high-medium-low) Probability Definition(s) Qualitative relative probability (e.g. high-medium-low) Purpose Multiple: intended for multiple purposes including general hazard awareness, planning, and crisis management Audience Multiple audiences (usually the public, civil authorities, and land-use planners) Language(s) English Basemap(s) Simple or sketch map Basemap overlay(s) Street map Diemsionality Planimetric (2D or map) view Color Scheme Symbols and/or lines only