Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2402
AuthorsLombardi, A. M.* 
Marzocchi, W.* 
Selva, J.* 
TitleExploring the evolution of a volcanic seismic swarm: the case of the 2000 Izu Islands swarm
Issue Date2006
Series/Report no./33 (2006)
DOI10.1029/2005GL025157
URIhttp://hdl.handle.net/2122/2402
Keywordsvolcanic seismic
Izu Islands swarm
Subject Classification04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology 
AbstractThe goal of this paper is to yield physical constrains on the nature and evolution of a seismic swarm by means of a quantitative stochastic modeling of earthquakes occurrence. With this purpose, we fit different stationary and nonstationary stochastic ETAS models to the Izu Islands seismic swarm occurred in 2000. We find that a nonstationary model with background activity and p-value varying through time describes the observations better than other simpler ETAS models. The coherent fluctuations of these parameters and of the spatio-temporal earthquake distribution are interpreted in terms of a magma/fluids source process that evolves through outbursts of activity superimposed to low frequency variations. The results obtained suggest that suitable nonstationary ETAS modeling can be very useful to characterize the nature of the swarm source, and it may provide the basis to build a quantitative tool for tracking in almost real-time the evolution of a magma/fluids source.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
701.pdf137.94 kBAdobe PDFView/Open    Request a copy
Show full item record

Page view(s)

58
checked on Apr 29, 2017

Download(s)

17
checked on Apr 29, 2017

Google ScholarTM

Check

Altmetric