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Official, Figure in hazard assessment
Approximate areas likely to receive noticeable tephra fall from explosive eruptions of Redoubt Volcano, southern Alaska
Figure 18 in: Till, A.B., Yount, M.E., & Riehle, J.R. (1993). Redoubt Volcano, southern Alaska; a hazard assessment based on eruptive activity through 1968. U.S. Geological Survey, Bulletin 1996, 19 p., 1 plate. https://doi.org/10.3133/b1996
Official, Figure in hazard assessment
Approximate extent of proximal hazard zones from ashfall and ballistics near the Tanaga volcanic cluster, Tanaga Island, Alaska
Figure 14 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
Official, Figure in hazard assessment
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.
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
Official, Flyer, brochure, short fact-sheet, or handout
Are You at Risk from the Next Eruption of Mount Hood? Hazards Zonation Map
Gardner, C. A., Scott, W. E., Major, J. J., & Pierson, T. C. (2000). Mount Hood-history and hazards of Oregon's most recently active volcano. US Geological Survey, Fact Sheet 060-00 (PDF Version). https://doi.org/10.3133/fs06000
Official, Sign or billboard
Area closed. Do not enter. Increased risk of eruption.
Department of Conservation. (2020). Area closed. Do not enter. Increased risk of eruption. December 2020 R183230.
Official, Figure in hazard assessment
Area expuesta a flujos de lava provenientes del Nevado Santa Isabel
(Area exposed to lava flows from Nevado de Santa Isabel)
Figure 5 in: Instituto de Investigaciones en Geociencias, Mineria y Quimica (INGEOMINAS). (1993). Mapa Preliminar de Amenaza Volcanica Potencial Complejo de Domos Santa Isabel, Cordillera Central de Colombia. Ibague.
Official, Figure in hazard assessment
Area Impactada por Colapso de Columna
(Area Impacted by Column Collapse)
Figure 6.11 in: Alvarado, G.E., Campos-Durán, D., Brenes-André, J., Alpízar, Y., Núñez, S., Esquivel, L., Sibaja, J.P. & Fallas, B. (2021). Peligro Volcánico del Irazú, Costa Rica. Comisión Nacional de Prevención de Riesgos y Atención de Emergencias (CNE). Deciembre 2021. (Modified from: Soto & Sjöbohm 2015).
Official, Figure in hazard assessment
Area Impactada por Colapso de Columna a 10000 Metros
(Impacted Area from Column Collapse from 10000 Meters)
Figure 97 in: Soto, G.J. & Sjöbohm, L. (2015). Escenarios de amenaza del volcán Irazú (Costa Rica): Una aproximación preliminar. FUNDEVI, Universidad de Costa Rica, Escuela Centroamericana de Geología. 188 p. https://doi.org/10.13140/RG.2.2.22061.54240
Official, Figure in hazard assessment
Area Impactada por Colapso de Columna a 5000 Metros
(Impacted Area from Column Collapse from 5000 Meters)
Figure 95 in: Soto, G.J. & Sjöbohm, L. (2015). Escenarios de amenaza del volcán Irazú (Costa Rica): Una aproximación preliminar. FUNDEVI, Universidad de Costa Rica, Escuela Centroamericana de Geología. 188 p. https://doi.org/10.13140/RG.2.2.22061.54240
Official, Figure in hazard assessment
Area Impactada por Colapso de Columna a 8000 Metros
(Impacted Area from Column Collapse from 8000 Meters)
Figure 96 in: Soto, G.J. & Sjöbohm, L. (2015). Escenarios de amenaza del volcán Irazú (Costa Rica): Una aproximación preliminar. FUNDEVI, Universidad de Costa Rica, Escuela Centroamericana de Geología. 188 p. https://doi.org/10.13140/RG.2.2.22061.54240