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http://hdl.handle.net/2122/2420
DC Field | Value | Language |
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dc.contributor.authorall | Caruso, F.; Scuola Superiore di Catania, Universit`a di Catania | en |
dc.contributor.authorall | Vinciguerra, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | Latora, V.; Dipartimento di Fisica e Astronomia, Universit`a di Catania | en |
dc.contributor.authorall | Rapisarda, A.; Dipartimento di Fisica e Astronomia, Universit`a di Catania | en |
dc.contributor.authorall | Malone, S.; Department of Earth and Space Sciences, University of Washington | en |
dc.date.accessioned | 2007-09-03T07:26:51Z | en |
dc.date.available | 2007-09-03T07:26:51Z | en |
dc.date.issued | 2006 | en |
dc.identifier.uri | http://hdl.handle.net/2122/2420 | en |
dc.description.abstract | We present a multifractal analysis of Mount St. Helens seismic activity during 1980–2002. The seismic time distribution is studied in relation to the eruptive activity, mainly marked by the 1980 major explosive eruptions and by the 1980–1986 dome building eruptions. The spectrum of the generalized fractal dimensions, i.e. Dq versus q, extracted from the data, allows us to identify two main earthquake time distribution patterns. The first one exhibits a multifractal clustering correlated to the intense seismic swarms of the dome building activity. The second one is characterized by an almost constant value of Dq ≈ 1, as for a random uniform distribution. The time evolution of Dq (for q = 0.2), calculated on a fixed number of events window and at different depths, shows that the brittle mechanical response of the shallow layers to rapid magma intrusions, during the eruptive periods, is revealed by sharp changes, acting at a short time scale (order of days), and by the lowest values of Dq (≈ 0.3). Conversely, for deeper earthquakes, characterized by intense seismic swarms, Dq do not show obvious changes during the whole analyzed period, suggesting that the earthquakes, related to the deep magma supply system, are characterized by a minor degree of clustering, which is independent of the eruptive activity. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Fractals | en |
dc.relation.ispartofseries | 3/4(2006) | en |
dc.subject | Earthquakes Time Distributions | en |
dc.subject | Multifractal Clustering | en |
dc.subject | St. Helens Volcanism | en |
dc.subject | Depth Analysis | en |
dc.title | Multifractal analysis of Mt. St. Helens seismicity as a tool for identifying eruptive activity | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 179-186 | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology | en |
dc.subject.INGV | 05. General::05.01. Computational geophysics::05.01.04. Statistical analysis | en |
dc.relation.references | D. L. Turcotte, Fractals and Chaos in Geology and Geophysics (Cambridge University Press, 1992). P. Bak, C. Tang and K. Wiesenfeld, Phys. Rev. Lett. 59 (1987) 381–384; H. J. Jensen, Self-Organized Criticality (Cambridge University Press, Cambridge, 1998). D. L. Turcotte, Phys. Earth Planet. Int. 111 (1999) 275–293; F. Caruso, A. Pluchino, V. Latora, A. Rapisarda and B. Tadic, Eur. Phys. J. B 50 (2006) 243–247. P. Tosi, V. De Rubeis, V. Loreto and L. Pietronero, Ann. Geophys. 47 (2004) 1–6; V. De Rubeis, P. Dimitriu, E. Papadimitriou and P. Tosi, Geophys. Res. Lett. 20 (1993) 1911–1914. V. De Rubeis, P. Tosi and S. Vinciguerra, Geophys. Res. Lett. 24 (1997) 2331–2334. D. Legrand, A. Cisternas and L. Dorbath, Geophys. Res. Lett. 23 (1996) 933–936. S. Gresta and G. Patan`e, Pure Appl. Geophys. 121 (1983) 287–295. V. Latora, A. Rapisarda and S. Vinciguerra, Phys. Earth Planet. Int. 109 (1998) 115–127. S. Vinciguerra, Geophys. Res. Lett. 26 (1999) 24, 3685–3688. P. P. Dimitriu, E.M. Scordilis and V. G. Karacostas, Natural Hazards 21 (2000) 277–295. L. Telesca, V. Lapenna and F. Vallianatos, Phys. Earth Planet. Int. 131 (2002) 63–79. S. Malone, Geosci. Canada 17 (1990) 3, 146–150. C. Musumeci, S. Gresta and S. D. Malone, J. Geophys. Res. Solid Earth 107 (2002) 16. P. Grassberger and I. Procaccia, Physica D 9 (1983) 189. R. C. Hilborn, Chaos and Nonlinear Dynamics, 2nd edn. (Oxford University Press, Oxford, 2000). J. C. Sprott, Chaos and Time-Series Analysis (Oxford University Press, Oxford, 2003). S. R. Brantley and B. Myers, Mount St. Helens: From the 1980 Eruption to 2000, USGS factsheet 0036-00, http://geopubs.wr.usgs.gov/factsheet/ fs036-00/fs036-00.pdf (2000). | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Caruso, F. | en |
dc.contributor.author | Vinciguerra, S. | en |
dc.contributor.author | Latora, V. | en |
dc.contributor.author | Rapisarda, A. | en |
dc.contributor.author | Malone, S. | en |
dc.contributor.department | Scuola Superiore di Catania, Universit`a di Catania | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.department | Dipartimento di Fisica e Astronomia, Universit`a di Catania | en |
dc.contributor.department | Dipartimento di Fisica e Astronomia, Universit`a di Catania | en |
dc.contributor.department | Department of Earth and Space Sciences, University of Washington | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | CNR-INFM and Scuola Normale Superiore, Pisa, Italy | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | Dip. di Fis, Univ. di Catania | - |
crisitem.author.dept | Università di Catania, Dipartimento di Fisica e Astronomia | - |
crisitem.author.dept | Department of Earth and Space Sciences, University of Washington Seattle, Washington, USA. | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 05. General | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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