Referencer/Bibliografier
Dean, K., Dehn, J. 2011: Monitoring Volcanoes in the North Pacific: Observations from Space," Praxis Publishing Ltd.
USGS: Plate Tectonics in a Nutshell. [http://volcanoes.usgs.gov/about/edu/dynamicplanet/nutshell.php]
USGS: Volcano Hazards Program Photo Glossary. [http://volcanoes.usgs.gov/images/pglossary/]
USGS: Volcano Hazards Program Volcanic Gases and Their Effects. [http://volcanoes.usgs.gov/hazards/gas/index.php]