Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7127
AuthorsCiaramella, A.* 
De Lauro, E.* 
Falanga, M.* 
Petrosino, S.* 
TitleAutomatic detection of long-period events at Campi Flegrei Caldera (Italy)
Issue DateSep-2011
Series/Report no./38 (2011)
DOI10.1029/2011GL049065
URIhttp://hdl.handle.net/2122/7127
KeywordsCampi Flegrei
convolutive independent component analysis
long-period detection
Subject Classification05. General::05.01. Computational geophysics::05.01.05. Algorithms and implementation 
AbstractWe propose a novel approach to analyze continuous seismic signal and separate the sources from background noise. A specific application to the seismicity recorded at Campi Flegrei Caldera during the 2006 ground uplift is presented. The fundamental objective is to improve the standard procedures of picking the emergent onset arrivals of the seismic signals, often buried in the high-level ambient noise, in order to obtain an appropriate catalogue for monitoring the activity of this densely populated volcanic area. This is particularly useful in order to estimate the release of the seismic energy and to put constraints on the source dynamics. An Independent Component Analysis based approach for the Blind Source Separation of convolutive mixtures is adopted to obtain a clear separation of Long Period events from the ambient noise. The approach presents good performance and it is suitable for real time implementation in seismic monitoring. Its application to the continuous seismic signal recorded at Campi Flegrei has allowed the extraction of high-quality waveforms, considerably improving the detection of low-energy events.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
Ciaramella_2011.pdfarticle1.22 MBAdobe PDFView/Open    Request a copy
Show full item record

Page view(s)

158
checked on Apr 28, 2017

Download(s)

33
checked on Apr 28, 2017

Google ScholarTM

Check

Altmetric