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Bradyseism
Sign in to savethumb|220px|right|The "Serapium" or Macellum of Pozzuoli demonstrated the effects of bradyseism. Bradyseism is the gradual uplift (positive bradyseism) or descent (negative bradyseism) of part of the Earth's surface caused by the filling or emptying of an underground magma chamber or hydrothermal activity, particularly in volcanic calderas. It can persist for millennia in between eruptions and each uplift event is normally accompanied by thousands of small to moderate earthquakes. The word derives from the ancient Greek words βραδύς bradús, meaning "slow", and σεισμός seismós meaning "movement
Article
2 sectionsContents
- Phlegraean Fields
- References
thumb|220px|right|The "Serapium" or Macellum of Pozzuoli demonstrated the effects of bradyseism. Bradyseism is the gradual uplift (positive bradyseism) or descent (negative bradyseism) of part of the Earth's surface caused by the filling or emptying of an underground magma chamber or hydrothermal activity, particularly in volcanic calderas. It can persist for millennia in between eruptions and each uplift event is normally accompanied by thousands of small to moderate earthquakes. The word derives from the ancient Greek words βραδύς bradús, meaning "slow", and σεισμός seismós meaning "movement", and was coined by Arturo Issel in 1883.
==Phlegraean Fields== The area of Phlegraean Fields (Campi Flegrei), near Naples, is a collapsed caldera, namely a volcanic area formed by several volcanic edifices, which includes the Solfatara volcano, well known for its fumaroles. The Campi Flegrei area is especially noted for bradyseismic uplift and subsidence. The inflation and deflation of this caldera is especially well documented due to its seaside location and a long history of habitation and construction in the area.