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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/12812
DC FieldValueLanguage
dc.date.accessioned2019-10-17T06:33:15Zen
dc.date.available2019-10-17T06:33:15Zen
dc.date.issued1999-08-15en
dc.identifier.urihttp://hdl.handle.net/2122/12812en
dc.descriptionWe interpret the two anomalies of high b -values we mapped beneath Mt. Etna as expressions of magma chambers. One is centered about 2 km E of the sulmnit at 12+/-3 km depth, the other WSW of the summit at approximately 5 +/-2 km depth. These depths are relative to 1.6 km above sea level, the mean elevation of the seismograph network. This means that our data support the previously published estimates of magma chambers based on crustal deformation data.en
dc.description.abstractWe mapped b-values in three dimensions in a cube of the crust with approximately 20 km dimensions under Mt. Etna. The earthquake catalog used contains 450 events with M≥2.5 for 1990-1997.9. Comparison of b-values derived from samples of N=50 events, extracted from volumes with radii ranging from 2.5 to 6 km, showed statistically highly significant differences between b=1.5±0.3 in most of the crust and b=3.0±0.5 in two volumes with r≤5 km, one located 2 km E of the summit of Etna and at 10±3 km depth and the other one WSW of Etna at a depth of about 3±2 km below sea level. We interpret these high b-value anomalies as an expression of two active magma chambers at those locations.en
dc.language.isoEnglishen
dc.relation.ispartofGeophysical Research Lettersen
dc.relation.ispartofseries16/42 (1999)en
dc.subjectEarthquake statistics, Volcanic processen
dc.titleThe locations of magma chambers at Mt. Etna, Italy, mapped by b-valuesen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber2553-2556en
dc.subject.INGVMt Etna, magma chambers, b-value mappingen
dc.description.obiettivoSpecifico6V. Pericolosità vulcanica e contributi alla stima del rischioen
dc.description.journalTypeJCR Journalen
dc.contributor.authorMurru, Mauraen
dc.contributor.authorMontuori, Caterinaen
dc.contributor.authorWyss, Maxen
dc.contributor.authorPrivitera, Eugenioen
dc.contributor.departmentIstituto Nazionale di Geofisicaen
dc.contributor.departmentIstituto Nazionale di Geofisicaen
dc.contributor.departmentGeophysicaI Institute, University of Alaska, Fairbanksen
dc.contributor.departmentIstituto internazionale di vulcanologia Cnren
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptWAPMERR, Geneva, Switzerland-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.orcid0000-0002-7385-394X-
crisitem.author.orcid0000-0001-8079-8451-
crisitem.author.orcid0000-0001-9623-1919-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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