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Interpretation of data from the monitoring thermal camera of Stromboli volcano (Aeolian Islands, Italy)

Published online by Cambridge University Press:  17 April 2009

V. ZANON*
Affiliation:
Centro de Vulcanologia e Avaliação de Riscos Geológicos, Universidade dos Açores, Rua Mãe de Deus, 9501-801 Ponta Delgada, Portugal
M. NERI
Affiliation:
Istituto Nazionale di Geofisica e Vulcanologia, Piazza Roma, 2, I-95123 Catania, Italy
E. PECORA
Affiliation:
Istituto Nazionale di Geofisica e Vulcanologia, Piazza Roma, 2, I-95123 Catania, Italy
*
Author for correspondence: Vittorio.VZ.Zanon@azores.gov.pt

Abstract

Twenty eruptive events from the Northeast Crater of Stromboli volcano recorded by a thermal monitoring camera in early 2004 were analysed in order to understand the eruptive dynamics. Selected events were chosen to be typical of explosions that characterize the steady activity of Stromboli in terms of jet height and duration. Most of the explosions consisted of clast-rich single bursts, originating from the same vent inside the Northeast Crater. Conspicuous ash emission was scarce. Eruptions were preceded by the flashing of a perturbation wave characterized by low temperatures and an average propagation velocity of about 35–100 m s−1. This perturbation was thought to be caused by the bursting of the gas slug at the bottom of the crater and is interpreted as an air wave. This was immediately followed by the expansion of a jet of ‘hot’ gas and particles, at a velocity of 35–75 m s−1. Ejecta coarser than 138 cm appeared ~1.6–2 s after the onset of the explosion, moving at a variable velocity (30–60 m s−1). Eruptive events were either vertical or inclined 7–13° towards the NNW. This inclination is thought to be a consequence either of the morphology of the conduit, following modest rock falls that partially obstructed the uppermost part of the crater, or of the displacement of the internal conduit due to the explosive activity of the volcano. The instability of the summit area is a further possible cause of the deformation of the conduit.

Type
Original Article
Copyright
Copyright © Cambridge University Press 2009

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References

Acocella, V., Neri, M. & Scarlato, P. 2006. Understanding shallow magma emplacement at volcanoes: Orthogonal feeder dykes during the 2002–2003 Stromboli (Italy) eruption. Geophysical Research Letters 33 (17), L17310, doi:10.1029/2006GL026862.CrossRefGoogle Scholar
Apuani, T., Corazzato, C., Cancelli, A. & Tibaldi, A. 2005. Stability of a collapsing volcano (Stromboli, Italy): Limit equilibrium analysis and numerical modelling. Journal of Volcanology and Geothermal Research 144, 191210.CrossRefGoogle Scholar
Arrighi, S., Rosi, M., Tanguy, J. C. & Courtillot, V. 2004. Recent eruptive history of Stromboli (Aeolian Islands, Italy) determined from high-accuracy archeomagnetic dating. Geophysical Research Letters 31 (L19603), doi:10.1029/2004GL020627.CrossRefGoogle Scholar
Ballestracci, R. 1982. Self-potential survey near the craters of Stromboli volcano (Italy). Inference for internal structure and eruption mechanism. Bulletin of Volcanology 45 (4), 349–65.CrossRefGoogle Scholar
Blackburn, E. A., Wilson, L. & Sparks, R. S. J. 1976. Mechanisms and dynamics of strombolian activity. Journal of the Geological Society, London 132, 429–40.CrossRefGoogle Scholar
Bonaccorso, A., Calvari, S., Garfì, G., Lodato, L. & Patane, D. 2003. Dynamics of the December 2003 flank failure and tsunami at Stromboli volcano inferred by volcanological and geophysical observations. Geophysical Research Letters 30 (18), 1941–4.CrossRefGoogle Scholar
Braun, T. & Ripepe, M. 1993. Interaction of seismic and air waves recorded on Stromboli Volcano. Geophysical Research Letters 20 (1), 65–8.CrossRefGoogle Scholar
Buongiorno, M. F., Realmuto, V. J. & Doumaz, F. 2002. Recovery of spectral emissivity from thermal infrared multispectral scanner imagery acquired over a mountainous terrain: A case study from Mount Etna Sicily. Remote Sensing of Environment 79, 123–33.CrossRefGoogle Scholar
Burton, M. R., Allard, P., Murè, F. & La Spina, A. 2007. Magmatic gas composition reveals the source depth of slug-driven Strombolian explosive activity. Science 317, 227–30.CrossRefGoogle ScholarPubMed
Calvari, S. & Pinkerton, H. 2004. Birth, growth and morphologic evolution of the ‘Laghetto’ cinder cone during the 2001 Etna eruption. Journal of Volcanology and Geothermal Research 132 (2–3), 225–39.CrossRefGoogle Scholar
Calvari, S., Spampinato, L., Lodato, L., Harris, A. J. L., Patrick, M. R., Dehn, J., Burton, M. R. & Andronico, D. 2005. 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. Journal of Geophysical Research 110, B02201, doi:10.1029/2004JB003129.Google Scholar
Chouet, B., Dawson, P., Ohminato, T., Martini, M., Saccorotti, G., Giudicepietro, F., De Luca, G., Milana, G. & Scarpa, R. 2003. Source mechanisms of explosions at Stromboli volcano, Italy, determined from moment-tensor inversions of very-long-period data. Journal of Geophysical Research 108 (B1), 2019, doi:10.1029/2002JB001919.CrossRefGoogle Scholar
Chouet, B., Hamisevicz, N. & McGetchin, T. R. 1974. Photoballistics of volcanic jet activity at Stromboli, Italy. Journal of Geophysical Research 79, 4961–76.CrossRefGoogle Scholar
Chouet, B., Saccorotti, G., Marini, M., Dawson, P., De Luca, G., Milana, G., Cattaneo, M. & Scarpa, R. 1999. Source and path effects in the wave fields of tremor and explosions at Stromboli Volcano, Italy. Geophysical Research Letters 29, 1937–40.CrossRefGoogle Scholar
Falsaperla, S., Maiolino, V., Spampinato, S., Jaquet, O. & Neri, M. 2008. Sliding episodes during the 2002–2003 Stromboli lava effusion: insights from seismic, volcanic, and statistical data analysis. Geochemistry, Geophysics, Geosystems 9, Q04022, doi:10.1029/2007GC001859.CrossRefGoogle Scholar
Falsaperla, S., Neri, M., Pecora, E. & Spampinato, S. 2006. Multidisciplinary study of flank instability phenomena at Stromboli volcano, Italy. Geophysical Research Letters 33, L09304, doi:10.1029/2006GL025940.CrossRefGoogle Scholar
Firstov, P. P. & Kravchenko, N. M. 1996. Estimation of the amount of explosive gas released in volcanic eruptions using air waves. Vulkanologiya i Seismologiya 17, 547–60.Google Scholar
Francalanci, L., Tommasini, S. & Conticelli, S. 2004. The volcanic activity of Stromboli in the 1906–1998 AD period: mineralogical, geochemical and isotope data relevant to the understanding of the plumbing system. Journal of Volcanology and Geothermal Research 131 (1–2), 179211.CrossRefGoogle Scholar
Gillot, P. Y. & Keller, J. 1993. Radiochronological dating of Stromboli. Acta Vulcanologica 3, 6977.Google Scholar
Harris, A. J. L. & Ripepe, M. 2007. Synergy of multiple geophysical approaches to unravel explosive eruption conduit and source dynamics – A case study from Stromboli. Chemie der Erde 67, 135.CrossRefGoogle Scholar
Hort, M. & Seyfried, R. 1998. Volcanic eruption velocities measured with a micro radar. Geophysical Research Letters 25 (1), 113–16.CrossRefGoogle Scholar
Hort, M., Seyfried, R. & Voge, M. 2003. Radar Doppler velocimetry of volcanic eruptions: theoretical considerations and quantitative documentation of changes in eruptive behavior at Stromboli volcano, Italy. Geophysical Journal International 154, 515–32.CrossRefGoogle Scholar
Jaupart, C. & Vergniolle, S. 1989. The generation and collapse of a foam layer at the roof of a basaltic magma chamber. Journal of Fluid Mechanics 203, 347–80.CrossRefGoogle Scholar
Johnson, J. B. 2002. Generation and propagation of infrasonic airwaves from volcanic explosions. Journal of Volcanology and Geothermal Research 121, 114.CrossRefGoogle Scholar
Johnson, J. B., Aster, R. C. & Kyle, P. R. 2004. Volcanic eruptions observed with infrasound. Geophysical Research Letters 31 (L14604), doi:10.1029/2004GL020020.CrossRefGoogle Scholar
Johnson, J. B. & Lees, J. M. 2000. Plugs and chugs – seismic and acoustic observations of degassing explosions at Karymsky, Russia and Sangay, Ecuador. Journal of Volcanology and Geothermal Research 101 (1–2), 6782.CrossRefGoogle Scholar
Livshits, L. D. & Bolkhovitinov, L. G. 1977. Weak shock waves in the eruption column. Nature 267, 420–1.CrossRefGoogle Scholar
McGreger, A. D. & Lees, J. M. 2004. Vent discrimination at Stromboli Volcano, Italy. Journal of Volcanology and Geothermal Research 137, 169–85.CrossRefGoogle Scholar
Nairn, I. A. 1976. Atmospheric shock waves and condensation clouds from Ngauruhoe explosion eruption. Nature 259, 190–2.CrossRefGoogle Scholar
Neri, M., Lanzafame, G. & Acocella, V. 2008. Dike emplacement and related hazard in volcanoes with sector collapse: the 2007 Stromboli eruption. Journal of the Geological Society, London 165, 883–6.CrossRefGoogle Scholar
Pasquarè, G., Francalanci, L., Garduño, V. H. & Tibaldi, A. 1993. Structure and geological evolution of the Stromboli volcano, Aeolian Islands, Italy. Acta Vulcanologica 3, 7989.Google Scholar
Patrick, M. R. 2007. Dynamics of Strombolian ash plumes from thermal video: motion, morphology, and air entrainment. Journal of Geophysical Research 112 (B06202), doi:10.1029/2006JB004387.CrossRefGoogle Scholar
Patrick, M. R., Harris, A. J. L., Ripepe, M., Dehn, J., Rothery, D. A. & Calvari, S. 2007. Strombolian explosive styles and source conditions: insights from thermal (FLIR) video. Bulletin of Volcanology 69 (7), 769–84.CrossRefGoogle Scholar
Perret, A. F. 1912. The flashing arcs: A volcanic phenomenon. American Journal of Science 4, 329–33.CrossRefGoogle Scholar
Ripepe, M. 1996. Evidence for gas influence on volcanic seismic signals recorded at Stromboli. Journal of Volcanology and Geothermal Research 70 (3–4), 221–33.CrossRefGoogle Scholar
Ripepe, M., Ciliberto, S. & Della Schiava, M. 2001. Time constraint for modelling source dynamics of volcanic explosions at Stromboli. Journal of Geophysical Research 106, 8713–27.CrossRefGoogle Scholar
Ripepe, M. & Gordeev, E. 1999. Gas bubble dynamics model for shallow volcanic tremor at Stromboli. Journal of Geophysical Research 104 (B5), 10639–54.CrossRefGoogle Scholar
Ripepe, M., Marchetti, E., Ulivieri, G., Harris, A. J. L., Dehn, J., Burton, M., Caltabiano, T. & Salerno, G. 2005. Effusive to explosive transition during the 2003 eruption of Stromboli volcano. Geology 33 (5), 341–4.CrossRefGoogle Scholar
Ripepe, M., Rossi, M. & Saccorotti, G. 1993. Image processing of explosive activity at Stromboli. Journal of Volcanology and Geothermal Research 54 (3–4), 335–51.CrossRefGoogle Scholar
Rosi, M., Bertagnini, A. & Landi, P. 2000. Onset of the persistent activity at Stromboli Volcano (Italy). Bulletin of Volcanology 62, 294300.CrossRefGoogle Scholar
Rowe, C. A., Aster, R. C., Kyle, P. R., Dibble, R. R. & Schlue, J. W. 2000. Seismic and acoustic observations at Mount Erebus Volcano, Ross Island, Antarctica, 1994–1998. Journal of Volcanology and Geothermal Research 101, 105–28.CrossRefGoogle Scholar
Sawyer, G. M. & Burton, M. R. 2006. Effects of a volcanic plume on thermal imaging data. Geophysical Research Letters 33 (14), doi:10.1029/2005GL025320.CrossRefGoogle Scholar
Tibaldi, A. 2001. Multiple sector collapses at Stromboli volcano, Italy: How they work. Bulletin of Volcanology 63 (2–3), 112–25.CrossRefGoogle Scholar
Tibaldi, A. 2003. Influence of cone morphology on dykes, Stromboli, Italy. Journal of Volcanology and Geothermal Research 126, 7995.CrossRefGoogle Scholar
Vaggelli, G., Francalanci, L., Ruggieri, G. & Testi, S. 2003. Persistent polybaric rests of calc-alkaline magmas at Stromboli volcano, Italy: pressure data from fluid inclusions in restitic quartzite nodules. Bulletin of Volcanology 65 (6), 385404.CrossRefGoogle Scholar
Vergniolle, S. & Brandeis, G. 1994. Origin of the sound generated by Strombolian explosions. Geophysical Research Letters 21 (18), 1959–62.CrossRefGoogle Scholar
Vergniolle, S. & Brandeis, G. 1996. Strombolian explosions, 1, A large bubble breaking at the surface of a lava column as a source of sound. Journal of Geophysical Research 101 (B9), 20433–48.CrossRefGoogle Scholar
Vergniolle, S., Brandeis, G. & Mareschal, J. C. 1996. Strombolian explosions, 2, Eruption dynamics determined from acoustic measurements. Journal of Geophysical Research 101 (B9), 20449–66.CrossRefGoogle Scholar
Weill, A., Brandeis, G., Vergniolle, S., Baudin, F., Bilbille, J., Févre, J. F., Piron, B. & Hill, X. 1992. Acoustic sounder measurements of the vertical velocity of volcanic jets at Stromboli volcano. Geophysical Research Letters 19 (23), 2357–60.CrossRefGoogle Scholar
Yokoo, A., Ichihara, M. & Taniguchi, H. 2004. Flashing arc on Izu–Oshima 1986 eruption. Bulletin of the Volcanological Society of Japan 49, 299304.Google Scholar
Yokoo, A. & Taniguchi, H. 2004. Application of video image processing to detect volcanic pressure waves: A case study on archived images of Aso Volcano, Japan. Geophysical Research Letters 31 (23), L23604.CrossRefGoogle Scholar