Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7384
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dc.contributor.authorallRowe, C. A.; Los Alamos National Lahoratory, Los Alamos, NMen
dc.contributor.authorallFalsaperla, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italiaen
dc.contributor.authorallMaceira, M.; Los Alamos National Lahoratory, Los Alamos, NMen
dc.contributor.authorallLanger, H.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italiaen
dc.contributor.authorallBehncke, B.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italiaen
dc.contributor.editorallMagnani, B.; University of Memphis, USAen
dc.contributor.editorallLangston, C.; University of Memphis, USAen
dc.contributor.editorallAssimaki, D.; Georgia Institute of Technologyen
dc.contributor.editorallBrudzinski, M.; Miami University, USAen
dc.contributor.editorallPeng, Z.; Georgia Institute of Technology, USAen
dc.contributor.editorallPetersen, M.; USGS, USAen
dc.contributor.editorallWiens, D.; Washington University, USAen
dc.date.accessioned2012-01-18T11:41:34Zen
dc.date.available2012-01-18T11:41:34Zen
dc.date.issued2011-04-13en
dc.identifier.urihttp://hdl.handle.net/2122/7384en
dc.description.abstractExploring the Relative Merits of Signal Classification Methods - Application to Volcanic Unrest ROWE, C. A., Los Alamos National Laboratory, Los Alamos, NM, char@lanl.gov; FALSAPERLA, S., Istituto Nazionale di Geofisica, Catania, Italy, falsaperla@ct.ingv.it; MACEIRA, M., Los Alamos National Laboratory, Los Alamos, NM, mmaceira@lanl.gov; LANGER, H., Istituto Nazionale di Geofisica, Catania, Italy, langer@ct.ingv.it; BEHNCKE, B., Istituto Nazionale di Geofisica, Catania, Italy, behncke@ct.ingv.it Volcanoes are among the most prolific producers of sustained and repeatable seismic signals. As such, observatories worldwide share the problem of timely evaluation of signals during periods of unrest, when the rate of incoming data can overwhelm analysts and result in incomplete cataloging as well as possible overlooking of important shifts in activity. We apply automated methods to aid in real-time signal detection, classification and evaluation for active volcanoes. Adaptive coherency-based waveform cross-correlation has been successfully applied both for retroactive classification and phase pick adjustment in large catalogs of discrete earthquakes, but also for correlation scanning (the "matched filter" method) in both volcanic and nonvolcanic settings. The subspace detector method has recently been applied successfully to isolate low frequency events within nonvolcanic tremor, as well as for discrete tectonic and volcanic earthquake signals. Here we explore the utility of the subspace detector to recognize and characterize volcanic behavior both during periods exhibiting discrete events and during episodes of tremor. We compare the adaptability and sensitivity to a parallel analysis using matched filter methods, and we discuss statistically-based decision-making approaches regarding the successful classifications of detections. For instance, application of the subspace detector to nonvolcanic tremor in Japan resulted in a projection operator whose detection threshold was best determined using a beta probability distribution, whereas scanning a continuous time series during 2004 unrest at Mount St. Helens suggested a log-normal probability distribution as a more appropriate fit to the values. We build on these earlier observations and test the robustness of the algorithm at a variety of volcanoes.en
dc.language.isoEnglishen
dc.relation.ispartofSSA’s 2011 Annual Meetingen
dc.subjectseismic signalsen
dc.subjectvolcanoesen
dc.subjectclassification methodsen
dc.subjectvolcanic tremoren
dc.titleExploring the relative merits of signal classification methods - application to volcanic unresten
dc.typeOral presentationen
dc.description.statusPublisheden
dc.identifier.URLhttp://www2.seismosoc.org/FMPro?en
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismologyen
dc.description.ConferenceLocationMemphis,Tennessee, USAen
dc.description.obiettivoSpecifico1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attiveen
dc.description.fulltextopenen
dc.contributor.authorRowe, C. A.en
dc.contributor.authorFalsaperla, S.en
dc.contributor.authorMaceira, M.en
dc.contributor.authorLanger, H.en
dc.contributor.authorBehncke, B.en
dc.contributor.departmentLos Alamos National Lahoratory, Los Alamos, NMen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen
dc.contributor.departmentLos Alamos National Lahoratory, Los Alamos, NMen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen
dc.contributor.editorMagnani, B.en
dc.contributor.editorLangston, C.en
dc.contributor.editorAssimaki, D.en
dc.contributor.editorBrudzinski, M.en
dc.contributor.editorPeng, Z.en
dc.contributor.editorPetersen, M.en
dc.contributor.editorWiens, D.en
dc.contributor.editordepartmentUniversity of Memphis, USAen
dc.contributor.editordepartmentUniversity of Memphis, USAen
dc.contributor.editordepartmentGeorgia Institute of Technologyen
dc.contributor.editordepartmentMiami University, USAen
dc.contributor.editordepartmentGeorgia Institute of Technology, USAen
dc.contributor.editordepartmentUSGS, USAen
dc.contributor.editordepartmentWashington University, USAen
item.openairetypeOral presentation-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptLos Alamos National Lahoratory, Los Alamos, NM-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptLos Alamos National Lahoratory, Los Alamos, NM-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.orcid0000-0002-1071-3958-
crisitem.author.orcid0000-0002-2508-8067-
crisitem.author.orcid0000-0003-1991-1421-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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