Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/683
AuthorsBruno, P. P. G.* 
Di Fiore, V.* 
Rapolla, A.* 
TitleSeismic reflection data processing in active volcanic areas: an application to Campi Flegrei and Somma Vesuvius offshore (Southern Italy)
Issue Date2002
Series/Report no.45 (6)
URIhttp://hdl.handle.net/2122/683
Keywordsmarine geophysics
seismic reflection
Subject Classification04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology 
04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis 
05. General::05.02. Data dissemination::05.02.02. Seismological data 
AbstractThe Campanian volcanism develops near the sea. Therefore, the geophysical study of the marine environment is a key to a better understanding of the tectonic evolution and the origin of volcanism in the area. An abundance of high quality seismic data in the marine sector, where little direct information is available, is critical to the study of Campanian volcanism. This paper concerns the reprocessing of a seismic reflection dataset acquired in Naples Bay and processed during 1973. Even though the overall data quality was high for that time, of course their acquisition technological limits have been overcome by the new processing. Our reprocessing aimed at: 1) reduction of random noise in the data; 2) removal of unwanted coherent events; 3) reduction of spatial aliasing by means of trace interpolation on Commod Shot Point (CSP) gathering; 4) improvement of resolution of the seismic wavelet with spiking deconvolution algorithms and finally 5) reposition of reflectors in their correct locations in the space-TWT domain by means of dip moveout and post-stack time migration. A comparison between the new and old data shows that the new sections are characterized by a much higher S/N ratio. Diffraction hyperbole has been collapsed. Reverberations, ghosts and multiples have been removed or greatly attenuated, especially between the reflectors of interest, allowing us to follow them with more detail and with greater continuity. Furthermore, data resolution has been boosted by the reprocessing, allowing the interpreter to evaluate reflector position and continuity in greater detail. The reinterpretation phase of such lines, that is already in an advanced stage, will therefore allow us to gain new insights into the structural setting of the bay, with the aim of exploring the connection between tectonics and volcanism.
Appears in Collections:Annals of Geophysics

Files in This Item:
File Description SizeFormat 
753_768 Bruno.pdf1.26 MBAdobe PDFView/Open
Show full item record

Page view(s)

87
checked on Apr 29, 2017

Download(s)

572
checked on Apr 29, 2017

Google ScholarTM

Check