Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/8003
DC Field | Value | Language |
---|---|---|
dc.contributor.authorall | Mancilla, F. | en |
dc.contributor.authorall | Del Pezzo, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.authorall | Stich, D. | en |
dc.contributor.authorall | Morales, J. | en |
dc.contributor.authorall | Ibañez, J. | en |
dc.contributor.authorall | Bianco, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.date.accessioned | 2012-07-30T09:45:15Z | en |
dc.date.available | 2012-07-30T09:45:15Z | en |
dc.date.issued | 2012 | en |
dc.identifier.uri | http://hdl.handle.net/2122/8003 | en |
dc.description.abstract | Granada (Southern Spain) is a place of rare and enigmatic very deep focus earthquakes, the last one on April 11, 2010, with magnitude of 6.3 and depth of 620 km. We use regional broadband recordings to estimate QP and QS in the mantle for frequencies between 0.25 and 8 Hz, computing the spectra of the direct P- and S-waves with their early P- and S coda. We use the spectral decay method, constraining crustal Q to values given in the literature. We obtain robust estimates of QP in 6 frequency bands (0.25, 0.5,1, 2, 4 and 8 Hz) and of QS in 4 bands (0.25, 0.5,1, 2 Hz). QP in the mantle ranges from 13 at 0.25 Hz to 346 at 8 Hz and QS from 59 at 0.25 to 183 at 2 Hz. The frequency dependence is well fitted by Q = Q0f a with a equal to 0.6 for QS and 1.0 for QP, and Q0 equal to 109 for QS and 63 for QP. The QP/QS ratio is less than 1. These are extreme values within the ranges of mantle Q, QP/QS and a values reported in the literature, indicating strong scattering attenuation and absence of melt. We propose that such values, rather than being an exception, may approximate the average upper mantle, with solid olivine composition and small-scale heterogeneity. | en |
dc.language.iso | English | en |
dc.publisher.name | American Geophysical Union | en |
dc.relation.ispartof | Geophysical Research Letters | en |
dc.relation.ispartofseries | /39 (2012) | en |
dc.subject | Seismic attnuation, Subduction | en |
dc.title | Q_{P} and Q_{S} in the upper mantle beneath the Iberian peninsula from recordings of the very deep Granada earthquake of 2 April 11, 2010. | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | L09303 | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis | en |
dc.identifier.doi | 10.1029/2012GL050947 | en |
dc.description.obiettivoSpecifico | 3.1. Fisica dei terremoti | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | restricted | en |
dc.relation.issn | 0094-8276 | en |
dc.relation.eissn | 1944-8007 | en |
dc.contributor.author | Mancilla, F. | en |
dc.contributor.author | Del Pezzo, E. | en |
dc.contributor.author | Stich, D. | en |
dc.contributor.author | Morales, J. | en |
dc.contributor.author | Ibañez, J. | en |
dc.contributor.author | Bianco, F. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | 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 | Seismological and Computational Rock Physics Laboratory, School of Geological Sciences, University College Dublin, Ireland | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
crisitem.author.dept | Instituto Andaluz de Geofisica, Universidad de Granada, Campus Universitario de Cartuja s/n, 18071 Granada, Spain | - |
crisitem.author.dept | Instituto Andaluz de Geofísica, Universidad de Granada, Spain | - |
crisitem.author.dept | Instituto Andaluz de Geofísica, University of Granada, Granada, Spain, | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
crisitem.author.orcid | 0000-0002-6981-5967 | - |
crisitem.author.orcid | 0000-0002-9846-8781 | - |
crisitem.author.orcid | 0000-0001-5400-7724 | - |
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 | - |
Appears in Collections: | Article published / in press |
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2012GL050947.pdf | Main Article | 1.09 MB | Adobe PDF |
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