Seismic, acoustic, and thermal network monitors the 2003 eruption of Stromboli Volcano

Ripepe, Maurizio; Marchetti, E.; Poggi, Pasquale; Harris, Andrew; Fiaschi, A.; Ulivieri, Giacomo

doi:10.1029/2004eo350001

Cited by 38 publications

(25 citation statements)

References 7 publications

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“… Barnet et al , 1997]. Similarly, a progressive increase in the number of Very Long Period events (VLP) has been recorded during March 2003 [ Ripepe et al , 2004].…”

Section: Discussionmentioning

confidence: 99%

Tracking precursors and degassing by radon monitoring during major eruptions at Stromboli Volcano (Aeolian Islands, Italy)

Cigolini

Gervino

Bonetti

et al. 2005

Geophysical Research Letters

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[1] We monitored radon anomalies before, during and after the recent paroxysmal eruptions of Stromboli. Major eruptive events are preceded by relative minima in radon emissions at stations located at the base of the cone, whereas three of the summit stations reached peak values ($20,000 Bq/m 3 or higher) 12 to 14 days before major eruptions, and are nearly coeval with earth tides. Radon emissions at/or above such high threshold values are proposed to result from the dynamic response of the fracture network due to degassing processes associated with magma ascent. Relative minima recorded at the base of the cone are related to fractures' self-sealing within the hydrothermal system, eventually coupled with the atmospheric stack-effect. The coexistence of the above anomalies is interpreted as the first precursory signals to major eruptive events.

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“… Barnet et al , 1997]. Similarly, a progressive increase in the number of Very Long Period events (VLP) has been recorded during March 2003 [ Ripepe et al , 2004].…”

Section: Discussionmentioning

confidence: 99%

Tracking precursors and degassing by radon monitoring during major eruptions at Stromboli Volcano (Aeolian Islands, Italy)

Cigolini

Gervino

Bonetti

et al. 2005

Geophysical Research Letters

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“…In addition, infrasonic pressure was recorded for 74 of the 93 Type 2 NE-1 eruptions by University of Firenze microphones (Ripepe et al 2004, with results shown in Fig. 9.…”

Section: Origin Of Type 2a and 2b Stylesmentioning

confidence: 99%

Strombolian explosive styles and source conditions: insights from thermal (FLIR) video

et al. 2007

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Forward Looking Infrared Radiometer (FLIR) cameras offer a unique view of explosive volcanism by providing an image of calibrated temperatures. In this study, 344 eruptive events at Stromboli volcano, Italy, were imaged in 2001-2004 with a FLIR camera operating at up to 30 Hz. The FLIR was effective at revealing both ash plumes and coarse ballistic scoria, and a wide range of eruption styles was recorded. Eruptions at Stromboli can generally be classified into two groups: Type 1 eruptions, which are dominated by coarse ballistic particles, and Type 2 eruptions, which consist of an optically-thick, ash-rich plume, with (Type 2a) or without (Type 2b) large numbers of ballistic particles. Furthermore, Type 2a plumes exhibited gas thrust velocities (>15 m s −1 ) while Type 2b plumes were limited to buoyant velocities (<15 m s −1 ) above the crater rim. A given vent would normally maintain a particular gross eruption style (Type 1 vs. 2) for days to weeks, indicating stability of the uppermost conduit on these timescales. Velocities at the crater rim had a range of 3-101 m s −1 , with an overall mean value of 24 m s −1 . Mean crater rim velocities by eruption style were: Type 1= 34 m s −1 , Type 2a=31 m s −1 , Type 2b=7 m s −1 . Eruption durations had a range of 6-41 s, with a mean of 15 s, similar among eruption styles. The ash in Type 2 eruptions originates from either backfilled material (crater wall slumping or ejecta rollback) or rheological changes in the uppermost magma column. Type 2a and 2b behaviors are shown to be a function of the overpressure of the bursting slug. In general, our imaging data support a broadening of the current paradigm for strombolian behavior, incorporating an uppermost conduit that can be more variable than is commonly considered.

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“…Although the value of ground‐based (handheld or tripod‐mounted) thermal imaging and thermal infrared thermometers in volcanology has long been recognized [e.g., Decker and Peck , 1967; Shimozuru , 1971; Birnie , 1973], only recently has the routine use of ground‐based thermal measurements become widely reported. In recent years, ground‐based thermal infrared measurements of active volcanic features have been used to achieve the following: (1) recognize magma movements within the central conduits, detect the upward movement of shallow feeder dikes and track eruptive activity [ Calvari et al , 2003; Harris et al , 2003]; (2) measure the thermal and rheological properties of active basaltic lava flows, lava tubes and silicic (block) lava flows [ Flynn and Mouginis‐Mark , 1994; Hon et al , 1994; Harris et al , 2002; Kauahikaua et al , 2003; Wright and Flynn , 2003; Andronico et al , 2004]; (3) analyze the evolution of fumarole fields [ Harris and Maciejewski , 2000], active eruption plumes [ McGimsey et al , 1999; Dehn et al , 2002; Kaneko et al , 2002; Matsushima et al , 2003], strombolian activity and persistent degassing [ Harris et al , 1996; Ripepe et al , 2004]; (4) obtain effusion rate for active lava flows [ Harris et al , 2005]; (5) detect potential failure planes on recently formed cinder cones [ Calvari and Pinkerton , 2004] and fractures developing just before flank collapse at active volcanoes [ Bonaccorso et al , 2003]; and (6) analyze active lava lakes [ Flynn et al , 1993; Oppenheimer and Yirgu , 2002]. …”

Section: Introductionmentioning

confidence: 99%

Chronology and complex volcanic processes during the 2002–2003 flank eruption at Stromboli volcano (Italy) reconstructed from direct observations and surveys with a handheld thermal camera

et al. 2005

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[1] Effusive activity at Stromboli is uncommon, and the 2002-2003 flank eruption gave us the opportunity to observe and analyze a number of complex volcanic processes. In particular, the use of a handheld thermal camera during the eruption allowed us to monitor the volcano even in difficult weather and operating conditions. Regular helicopter-borne surveys with the thermal camera throughout the eruption have significantly improved (1) mapping of active lava flows; (2) detection of new cracks, landslide scars, and obstructions forming within and on the flanks of active craters; (3) observation of active lava flow field features, such as location of new vents, tube systems, tumuli, and hornitos; (4) identification of active vent migration along the Sciara del Fuoco; (5) monitoring of crater's inner morphology and maximum temperature, revealing magma level changes within the feeding conduit; and (6) detection of lava flow field endogenous growth. Additionally, a new system developed by A. J. L. Harris and others has been applied to our thermal data, allowing daily calculation of effusion rate. These observations give us new insights on the mechanisms controlling the volcanic system.

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Seismic, acoustic, and thermal network monitors the 2003 eruption of Stromboli Volcano

Cited by 38 publications

References 7 publications

Tracking precursors and degassing by radon monitoring during major eruptions at Stromboli Volcano (Aeolian Islands, Italy)

Tracking precursors and degassing by radon monitoring during major eruptions at Stromboli Volcano (Aeolian Islands, Italy)

Strombolian explosive styles and source conditions: insights from thermal (FLIR) video

Chronology and complex volcanic processes during the 2002–2003 flank eruption at Stromboli volcano (Italy) reconstructed from direct observations and surveys with a handheld thermal camera

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