Volcano hazards in the Three Sisters Region, Oregon
Three Sisters, United States, 2001
Plate 1 in: Scott, W.E., Iverson, R., Schilling, S.P. & Fisher, B.J. (2001). Volcano Hazards in the Three Sisters Region, Oregon. U.S. Geological Survey, Open-File Report 99-437, 14 p., 1 plate. https://doi.org/10.3133/ofr99437
This map was produced by an official agency, but may not be 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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Map Data
Map ID 601 Hazard Process(es) Ballistics; Debris avalanches; Distal hazards; Lahars; Lava flows; PDCs; Proximal hazards; Regional hazards; Tephra fall; Vent-opening hazards Hazard Zone Presentation Grouped by location (e.g. proximal/distal zones) on a main map and series of insets Temporal Scale Background, or long-term, map Spatial Scale Volcano and surrounding area Publication Format Poster-style map insert in hazard assessment Zonation Method(s) Geologic history; Scenario modeling Zonation Model(s) Energy cone or line (Heim 1932; Sheridan 1979; Sheridan & Malin 1983); LAHARZ or modified version (such as PFZ) (Iverson et al. 1998; Schilling 1998; Schilling 2014); Unnamed tephra model [Hoblitt et al. (1987); Hoblitt & Scott (2011)] (Hoblitt et al. 1987; Hoblitt & Scott 2011) Scenario(s) Considered Analog volcano(es); Composition; Size, VEI, or intensity; Source location or direction Hazard Zone Label(s) Hazard process name; Location or source name; Numeric probability; Scenario name Probability Definition(s) Annual numeric probability; 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) Contour lines Basemap overlay(s) Street map Diemsionality Planimetric (2D or map) view Color Scheme Dark to Light (color)