English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

. Since 2004 a research project has been developed tomonitor subsurface deformation of Italian volcanoes using boreholestrainmeters and long-baseline tiltmeters. Six Sacks-Evertson dilatometerswere installed around Campi Flegrei caldera and Vesuvius during 2004–2005(Scarpa et al., 2007), and in 2008 these instruments were supplemented bytwo arrays of 28–280 m long water-tube tiltmeters in underground tunnels. Relevant strainmeter and tiltmeter data have been collected and analysedfrom the instruments installed near Campi Flegrei caldera during the recentunrest episodes. In the period 2004–2005 strain, tilt and GPS data fromCampi Flegrei indicate the onset of surface deformation that accompanied alow rate of vertical displacement that continued to 2006, corresponding toan increase of CO 2 emission. This strain episode preceded calderamicroseismic activity by a few months, as was observed also during asignificant inflation episode in 1982. Other transient strain episodesoccurred in October 2006, which were accompanied by a swarm of VT(Volcano-Tectonic) and LP (Long Period) events, in 2009, at the time ofrenewed gas emission activity at Solfatara, and again in March 2010, severalminutes before a seismic swarm. The time scale of these transient strainevents ranges from some hours to several days, putting tight constraints onthe origin of ground uplifts at Campi Flegrei. Their location is compatiblewith a source inferred from long term deformation signals, located about 4 km beneath Pozzuoli. A proposed mechanism for these aseismic strain episodesis that they are associated with magma growth in reservoirs with occasionalpressure relief associated with the leakage of gas.

Aseismic strain episodes at Campi Flegrei Caldera, Italy