Approximate extent of subaqueous debris-avalanche deposits northwest of Great Sitkin Island. Also shown are areas of Adak coastline that could be affected by tsunamis generated by a large flank collapse of Great Sitkin Volcano.
Great Sitkin, United States, 2003
Figure 12 in: Waythomas, C.F., Miller, T.P. & Nye, C.J. (2003). Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska. U.S. Geological Survey, Open-File Report 03-112, 25 p., 1 plate. https://doi.org/10.3133/ofr03112
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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Waythomas, C.F., Miller, T.P. & Nye, C.J. (2003). Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska. U.S. Geological Survey, Open-File Report 03-112, 25 p., 1 plate. https://doi.org/10.3133/ofr03112 Map Set
https://doi.org/10.3133/ofr03112
Map Data
Map ID 1323 Hazard Process(es) Tsunami 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 Island Publication Format Figure in a hazard assessment or mitigation plan Zonation Method(s) Geologic history Zonation Model(s) Scenario(s) Considered Style or type Hazard Zone Label(s) Hazard process name 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) Diemsionality Planimetric (2D or map) view Color Scheme Single color