Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/6952
AuthorsDel Pezzo, E.* 
De Natale, G.* 
Martini, M.* 
Zollo, A.* 
TitleSource parameters of microearthquakes at Phlegraean Fields (Southern Italy) volcanic area
Issue Date1987
Series/Report no./47 (1987)
URIhttp://hdl.handle.net/2122/6952
KeywordsSource parameters
microearthquakes
Subject Classification04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics 
AbstractThe seismic activity that occurred at the Pblegraean Fields (Southern Italy) volcanic area during a pronounced episode of ground uplift has been analysed. One hundred and eighty-one three component seismograms from a digital network operating in the period January—May 1984 were processed to obtain seismic moments, source radii and stress dropsfor32microearthquakes(0.7<ML< 3.2).Aninversemethodbasedonaleastsquaresfittingofdisplacement spectra with a theoretical model has been applied to infer the spectral parameters of P-radial and SH records. This method has the advantage of giving statistical errors on the spectral estimates. The computed seismic moments range between 0.5 x 1018 and 0.13 x 1021 dyne-cm. Stress drops are approximately constant, and do not clearly depend on seismic moments, which is in contrast with other reported data from microearthquake sequences. Small values of source radii (few tens of metres) are found.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
Physics of the Earth and Planetary Interiors 1987 del Pezzo.pdfMain article1.44 MBAdobe PDFView/Open    Request a copy
Show full item record

Page view(s)

137
checked on Apr 28, 2017

Download(s)

29
checked on Apr 28, 2017

Google ScholarTM

Check