Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/1644
DC Field | Value | Language |
---|---|---|
dc.contributor.authorall | Poupinet, G.; LGIT-IRIGM, Université Joseph Fourier and CNRS, Grenoble, France | en |
dc.contributor.authorall | Ratdomopurbo, A.; LGIT-IRIGM, Université Joseph Fourier and CNRS, Grenoble, France | en |
dc.contributor.authorall | Coutant, O.; LGIT-IRIGM, Université Joseph Fourier and CNRS, Grenoble, France | en |
dc.date.accessioned | 2006-09-21T14:45:13Z | en |
dc.date.available | 2006-09-21T14:45:13Z | en |
dc.date.issued | 1996-03 | en |
dc.identifier.uri | http://hdl.handle.net/2122/1644 | en |
dc.description.abstract | Multiplets, i.e. events with similar waveforms, are common features on active volcanoes. The seismograms of multiplets are analyzed by cross-spectrum techniques: this procedure improves by a factor of about 10 the precision of differential P-arrival times and therefore the accuracy of the relative location of earthquakes. Long period events which cannot be located because of the impossibility to pick up P-waves on individual seismograms can be located with a precision of about 10 m. Such a precision permits fault planes to be mapped inside a volcanic edifice and the azimuth and strike of fractures to be defined. Seismograms of the two events (of a doublet) that occur on different dates are analyzed by the Cross Spectrum Moving Window technique (CSMW) for measuring the time delay between waves in the coda. The pattern of the delays in the coda is a function of the temporal changes of seismic velocity that occurred inside the volcano during the time interval that separates the two events of a doublet. We illustrate the potential of the doublet technique for detecting temporal changes inside a volcano by performing computations of synthetic seismograms. The case of a dyke injected inside the volcano is considered as well as that of the replenishment of a superficial magma chamber and of a general increase in velocity in the summit of the volcano. Data from Merapi volcano (Indonesia)illustrate a possible temporal velocity change inside the volcano several months before the 1992 eruption. | en |
dc.format.extent | 3274119 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.relation.ispartofseries | 2/39 (1996) | en |
dc.subject | volcanic earthquake | en |
dc.subject | relocation of events | en |
dc.subject | temporal monitoring | en |
dc.title | On the use of earthquake multiplets to study fractures and the temporal evolution of an active volcano | en |
dc.type | article | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Poupinet, G. | en |
dc.contributor.author | Ratdomopurbo, A. | en |
dc.contributor.author | Coutant, O. | en |
dc.contributor.department | LGIT-IRIGM, Université Joseph Fourier and CNRS, Grenoble, France | en |
dc.contributor.department | LGIT-IRIGM, Université Joseph Fourier and CNRS, Grenoble, France | en |
dc.contributor.department | LGIT-IRIGM, Université Joseph Fourier and CNRS, Grenoble, France | en |
item.openairetype | article | - |
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 | LGIT-IRIGM, Université Joseph Fourier and CNRS, Grenoble, France | - |
crisitem.author.dept | Volcanological Survey of Indonesia, MVO, Yogyakarta, Indonesia | - |
crisitem.author.dept | LGIT-IRIGM, Université Joseph Fourier and CNRS, Grenoble, France | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
Appears in Collections: | Annals of Geophysics |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
04 poupinet.pdf | 3.2 MB | Adobe PDF | View/Open |
Page view(s)
129
checked on Apr 24, 2024
Download(s) 50
220
checked on Apr 24, 2024