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.
Click on image for full-size map. If link seems broken, try the archived version.
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:
- Approximate areas likely to be affected by pyroclastic flows and surges originating at the active vents of the Tanaga volcanic cluster, Tanaga Island, Alaska
- Areas that may be inundated by lava flows during a Tanaga volcanic cluster eruption, Tanaga Island, Alaska
- Areas that could be swept by lahars and floods, Tanaga Island, Alaska
- Areas that could be affected by debris avalanches and rockfalls, Tanaga Island, Alaska
- Areas that could be affected by directed blasts near Tanaga Island, Alaska
- Areas of potential ashfall during a moderate eruption of a Tanaga cluster volcano, Tanaga Island, Alaska
- Approximate extent of proximal hazard zones from ashfall and ballistics near the Tanaga volcanic cluster, Tanaga Island, Alaska
Map Data
| Map ID | 581 |
|---|---|
| Hazard Process(es) | Ballistics; Debris avalanches; Lahars; Lava flows; PDCs; Rockfalls; Tephra fall |
| Hazard Zone Presentation | Hazard process-focused: Most hazard processes are separated by hazard process type 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; 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) Considered | Season 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) |
| 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) | Hillshade |
| Basemap overlay(s) | |
| Diemsionality | Planimetric (2D or map) view |
| Color Scheme | Categorical/Qualitative |