The Stromboli volcano erupted on February 27, 2007, after an intense Strombolian activity lasted about 2 months. The eruption was characterized by a series of rapidly evolving phenomena, like the propagation of an effusive fracture along the crater rim, the opening of lateral effusive vents, an unusually large effusive flux (> 10 m 3/s), the collapse of the crater system, and a major strombolian explosion. This eruption was monitored by an integrated network of multiparameter instruments: broad-band seismometers, infrasonic array, thermal cameras and bore-hole tiltmeters. All the information collected and processed in real-time allowed to draw a clear picture of the eruption dynamics. Thermal imagery documented in real-time how the effusive fracture propagated at 12:24 GMT of February 27 along the northern rim of the NE crater towards the NE direction. The infrasonic array showed that explosive and degassing activity ceased at 10:32 GMT, a couple of hours before the opening of the effusive fractures. The end of the explosive activity coincided with an intense phase of high-frequency (4-22 Hz) tremor which showed two episodes of harmonic spectrum gliding from 4-7 Hz to ~ 22 Hz. The end of this phase was characterized at 18:26 GMT by a strong infrasonic signal located by the array in the Sciara del Fuoco and associated with the landslide induced by the opening of a lateral effusive vent at 400 m of elevation. This eruption provided a clear example on how the strategy of integrating in near-real-time geophysical information can pinpoint the transition from explosive to effusive activity of the shallow volcanic system at Stromboli.

The onset of the 2007 Stromboli effusive eruption by an integrated geophysical network / Ripepe M.; Delle Donne D.; Lacanna G.; Marchetti E.; Ulivieri G.. - In: JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH. - ISSN 0377-0273. - ELETTRONICO. - 182:(2009), pp. 0-0.

The onset of the 2007 Stromboli effusive eruption by an integrated geophysical network

RIPEPE, MAURIZIO;LACANNA, GIORGIO;MARCHETTI, EMANUELE;
2009

Abstract

The Stromboli volcano erupted on February 27, 2007, after an intense Strombolian activity lasted about 2 months. The eruption was characterized by a series of rapidly evolving phenomena, like the propagation of an effusive fracture along the crater rim, the opening of lateral effusive vents, an unusually large effusive flux (> 10 m 3/s), the collapse of the crater system, and a major strombolian explosion. This eruption was monitored by an integrated network of multiparameter instruments: broad-band seismometers, infrasonic array, thermal cameras and bore-hole tiltmeters. All the information collected and processed in real-time allowed to draw a clear picture of the eruption dynamics. Thermal imagery documented in real-time how the effusive fracture propagated at 12:24 GMT of February 27 along the northern rim of the NE crater towards the NE direction. The infrasonic array showed that explosive and degassing activity ceased at 10:32 GMT, a couple of hours before the opening of the effusive fractures. The end of the explosive activity coincided with an intense phase of high-frequency (4-22 Hz) tremor which showed two episodes of harmonic spectrum gliding from 4-7 Hz to ~ 22 Hz. The end of this phase was characterized at 18:26 GMT by a strong infrasonic signal located by the array in the Sciara del Fuoco and associated with the landslide induced by the opening of a lateral effusive vent at 400 m of elevation. This eruption provided a clear example on how the strategy of integrating in near-real-time geophysical information can pinpoint the transition from explosive to effusive activity of the shallow volcanic system at Stromboli.
2009
182
0
0
Ripepe M.; Delle Donne D.; Lacanna G.; Marchetti E.; Ulivieri G.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/426288
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 82
  • ???jsp.display-item.citation.isi??? ND
social impact