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Preliminary Volcano-Hazard Assessment for the Tanaga Volcanic Cluster, Alaska

Tanaga Volcanic Cluster (Sajaka, Takawangha, & Tanaga), United States, 2007

Plate 1 in: Coombs, M.L., McGimsey, R.G. & Browne, B.L. (2007). Preliminary volcano-hazard assessment for the Tanaga volcanic cluster, Tanaga Island, Alaska. U.S. Geological Survey, Scientific Investigations Report 2007-5094, 41 p., 1 plate. https://doi.org/10.3133/sir20075094



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 Set

Coombs, M.L., McGimsey, R.G. & Browne, B.L. (2007). Preliminary volcano-hazard assessment for the Tanaga volcanic cluster, Tanaga Island, Alaska. U.S. Geological Survey, Scientific Investigations Report 2007-5094, 41 p., 1 plate. https://doi.org/10.3133/sir20075094
https://doi.org/10.3133/sir20075094

Other Maps In Set:

Map Data

Map ID581
Hazard Process(es)Ballistics; Debris avalanches; Lahars; Lava flows; PDCs; Rockfalls; Tephra fall
Hazard Zone PresentationHazard process-focused: Most hazard processes are separated by hazard process type on a main map and series of insets
Temporal ScaleBackground, or long-term, map
Spatial ScaleVolcano and surrounding area
Publication FormatPoster-style map insert in hazard assessment
Zonation Method(s)Geologic history; Probabilistic modeling; Scenario modeling
Zonation Model(s)ASHFALL (Hurst 1994); 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)
Scenario(s) ConsideredSeason or weather; Size, VEI, or intensity; Source location or direction
Hazard Zone Label(s)Estimated value or Hazard Impact Metric; Hazard process name; Location or source name
Probability Definition(s)Qualitative relative probability (e.g. high-medium-low)
PurposeMultiple: intended for multiple purposes including general hazard awareness, planning, and crisis management
AudienceMultiple audiences (usually the public, civil authorities, and land-use planners)
Language(s)English
Basemap(s)Hillshade
Basemap overlay(s)
DiemsionalityPlanimetric (2D or map) view
Color SchemeCategorical/Qualitative
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