Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/3846
DC Field | Value | Language |
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dc.contributor.authorall | Antonino, D'Alessandro; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
dc.contributor.authorall | Giuseppe, D'Anna; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
dc.contributor.authorall | Dario, L.; Università degli studi di Palermo | en |
dc.contributor.authorall | Giorgio, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
dc.contributor.editorall | Antonino, D'Alessandro; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
dc.contributor.editorall | Giuseppe, D'Anna; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
dc.contributor.editorall | Dario, L.; Università degli studi di Palermo | en |
dc.contributor.editorall | Giorgio, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
dc.date.accessioned | 2008-05-12T08:24:33Z | en |
dc.date.available | 2008-05-12T08:24:33Z | en |
dc.date.issued | 2008-04-13 | en |
dc.identifier.uri | http://hdl.handle.net/2122/3846 | en |
dc.description.abstract | The Ocean Bottom Seismometer with Hydrophone deployed by the Gibilmanna OBS Lab (CNT-INGV) from the 12th to the 21st July 2006 on the flat top of the Marsili submarine volcano (790m of depth) recorded more than 1000 seismic events. By comparing them with the ones recorded in other volcanic areas and described in literature (Wassermann, 2002; McNutt, 2002; Díaz et al., 2007), we grouped these events in three categories: 817 VTB (Volcanic-Tectonic type B) events, 159 HF (High Frequency) events and 53 SDE’s (Short Duration Event). Small-magnitude VTB swarms, with frequency band between 2 and 6 Hz and mean time length of about 30 seconds, were almost all recorded in the first 7 days, while in the last 2 days, OBS recorded HF events with frequency band over 40 Hz and few minutes of length. Signals with similar frequency and time domain features are associated, to hydrothermal activity (Ohminato, 2006). The SDE waveform, characterized by a monochromatic signal with a slowly decaying envelope, is generated by oscillations of a resonant body excited by magmatic or hydrothermal activity (Chouet, 1996). We applied, to all the signals dataset, polarization and high resolution parametric spectral analysis. This kind of study allowed to mark the VTB events as multi P-phase events with shallow sources placed in a narrow azimuthal window as regards the OBS/H position. The seismogenetic volume is probably located in the North-East sector of the Marsili building. The high resolution parametric spectral analysis of the SDE signals allowed to find with high accuracy their dominant complex frequencies (!=f+ig). Plotting them in the complex frequencies plane we identified two distinct clusters with middle complex frequencies f=7.8s^−1, g=-0.35s^−1 and f=7.5s^−1, g=-0.47s^−1 respectively. These two clusters are probably linked two different seismogenetic volumes. | en |
dc.language.iso | English | en |
dc.relation.ispartof | European Geosciences Union 2008 | en |
dc.subject | Marsili | en |
dc.subject | OBS/H | en |
dc.subject | OBS | en |
dc.subject | Submarine volcano | en |
dc.subject | Tyrrhenian sea | en |
dc.title | Polarization and high resolution parametric spectral analisys applied to the seismic signals recorded on the Marsili submarine volcano | en |
dc.type | Conference paper | en |
dc.description.status | Published | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology | en |
dc.description.ConferenceLocation | Vienna | en |
dc.relation.references | Argnani, A. (2000), The southern Tyrrhenian subduction system: Recent evolution and neotectonic implications, Ann. Geophys., 43, 585–607. Beccaluva L., Rossi P. L. & Serri G. (1982) – Neogene to Recent volcanism of the Southern Tyrrhenian-Sicilian area: Implications for the geodynamic evolution of the Calabrian arc. Earth Evolutionary Sciences, 3: 222-238. Chouet B. (1996) – New methods and future trends in seismological volcano monitoring, Monitoring and Mitigation of Volcano Hazards, Eds. R. Scarpa and R. Tilling, Springer- Verlag, Berlin New York: 23-98. D’Anna G., Mangano G. , D’Alessandro A., Amato A. (2007) - The new INGV broadband OBS/H: test results on submarine volcano Marsili and future developments. Geophysical Research Abstracts, Vol. 9, 06583. Gueguen E., Doglioni C. & Fernandez M. (1998) – On the post-25 Ma geodynamic evolution of the western Mediterranean. Tectonophysics, 298: 259-269. Marani M.P., Gamberi F., Casoni L., Carrara G., Landuzzi V., Musacchio M., Penitenti D., Rossi L. & Trua T. (1999) – New rock and hydrotermal samples from the southern Tyrrhenian sea: the MAR-98 research cruise. Giornale di Geologia, 61: 3-24. Marani M.P. (2004) – Super-in"ation of a spreading ridge through vertical accretion. Mem. Descr. Carta Geol. d’It., LXIV: 185-194. Mongelli F., Zito G., De Lorenzo S., Doglioni C. (2004) – Geodynamic interpretation of the heat "ow in the Tyrrhenian Sea. Mem. Descr. Carta Geol. d’It., LXIV: 71-82. Mongelli, F., Cataldi R., Celati R., Della Vedova B., Fanelli M., Nuti S., Pellis G., Squarci P., Ta# L. & Zito G. (1992) – Geothermal regime in Italy, in Italian Working Group for the Geothermal Atlas in Europe, <<Geothermal Atlas of Europe>> edited by E. Hurting, Cermák V., Haenel R. and Zui V. (H.Haack Verlagsges., Gotha), 54-59. Montuori C., Cimini g. B. & Favali P. (2007) – Teleseismic tomography of the southern Tyrrhenian subduction zone: New results from sea"oor and land recordings. J. Geophys. Res., vol. 112: B03311. Nicolosi I., Speranza F. & Chiappini M. (2006) - Ultrafast oceanic spreading of the Marsili Basin, southern Tyrrhenian Sea: Evidence from magnetic anomaly analysis. Geology; September 2006; v. 34; no. 9; p. 717-720; Panza G.F., Pontevivo A., Saraò A., Aoudia A., Peccerillo A. (2004) – Structure of the lithospher-asthenosphere and volcanism in the Tyrrhenian Sea and surroundings. Mem. Descr. Carta Geol. d’It., LXIV: 29-57. Peterson J. (1993) – Observation and modeling of background seismic noise: U.S. Geol. Surv. Open-File rept., Albuquerque, 93-322. Pontevivo A. & Panza G.F. (2002) – Group Velocity Tomography and Regionalization in Italy and bordering areas. Phys. Earth Planet. Inter., 134: 1-15. Trua T., Serri G., Rossi P.L. (2004) – Coexistence of IAB-type and OIB-type magmas in the southern Tyrrhenian back-arck basin: evidence from recent sea"oor sampling and geodynamic implications. Mem. Descr. Carta Geol. d’It., LXIV: 83-96. Webb S.C. (1998) – Broadband seismology and noise under the ocean. Reviews of Geophysics, 36, 1: 105-142. | en |
dc.description.obiettivoSpecifico | 2.5. Laboratorio per lo sviluppo di sistemi di rilevamento sottomarini | en |
dc.description.fulltext | open | en |
dc.contributor.author | Antonino, D'Alessandro | en |
dc.contributor.author | Giuseppe, D'Anna | en |
dc.contributor.author | Dario, L. | en |
dc.contributor.author | Giorgio, M. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
dc.contributor.department | Università degli studi di Palermo | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
dc.contributor.editor | Antonino, D'Alessandro | en |
dc.contributor.editor | Giuseppe, D'Anna | en |
dc.contributor.editor | Dario, L. | en |
dc.contributor.editor | Giorgio, M. | en |
dc.contributor.editordepartment | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
dc.contributor.editordepartment | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
dc.contributor.editordepartment | Università degli studi di Palermo | en |
dc.contributor.editordepartment | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
item.openairetype | Conference paper | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Università degli Studi di Palermo, CFTA, Palermo | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
crisitem.author.orcid | 0000-0002-0074-3125 | - |
crisitem.author.orcid | 0000-0002-4642-3901 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Conference materials |
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Poster Marsili EGU08.pdf | Poster Marsili, EGU2008 | 12.46 MB | Adobe PDF | View/Open |
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