Stress Pattern At Campi Flegrei From Focal Mechanisms Of The 1982-1984 Earthquakes (Southern Italy)
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Journal Article: Stress Pattern At Campi Flegrei From Focal Mechanisms Of The 1982-1984 Earthquakes (Southern Italy)
AbstractCampi Flegrei is a Holocene volcanic area in the Campanian Plain (Southern Italy) within the Apennine Chain, a neogenic thrust belt built up since the Middle Miocene. The volcanic complex consists of a c. 12-km-diameter caldera containing several monogenetic volcanoes, the youngest of which (Monte Nuovo) erupted in 1538. Since at least Roman times, the area has also been affected by slow vertical movements (bradiseismic activity). Between 1982 and 1985, this slow motion was interrupted by a period of more rapid displacement which caused a maximum uplift of 180 cm in the town of Pozzuoli. To model the local stress field associated with the uplift, the Angelier inversion technique has been applied using the focal mechanisms of forty-nine earthquakes which occurred between April 1982 and December 1984. The results show that doming coupled with a regional extensional strain can account for the seismic phenomena that affected the area.
- Agostino Zuppetta and Alessandra Sava
- Published Journal
- Journal of Volcanology and Geothermal Research, 1991
- Not Provided
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Agostino Zuppetta,Alessandra Sava. 1991. Stress Pattern At Campi Flegrei From Focal Mechanisms Of The 1982-1984 Earthquakes (Southern Italy). Journal of Volcanology and Geothermal Research. (!) .