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TitleSunspots
AuthorBoteler, D H
SourceEncyclopedia of natural hazards; by Bowbrowski, P T (ed.); Encyclopedia of Earth Sciences Series vol. 41, 2013 p. 986, https://doi.org/10.1007/978-1-4020-4399-4 337
Year2013
Alt SeriesEarth Sciences Sector, Contribution Series 20120149
PublisherSpringer
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
Subjectsgeophysics; extraterrestrial geology; solar energy; solar variations; geomagnetism; geomagnetic fields; geomagnetic variations; magnetic disturbances; magnetic storms
ProgramTargeted Hazard Assessments in Northern Canada, Public Safety Geoscience
AbstractSunspots are dark regions on the Sun's surface. The number of sunspots varies with an approximately 11-year cycle and is used as an indicator of the level of solar activity that drives space weather.
GEOSCAN ID291554