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Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/4003
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| Title: | Recalibration of the Magnitude Scales at Campi Flegrei, Italy, on the Basis of Measured Path and Site and Transfer Functions |
| Authors: | Petrosino, S.*
De Siena, L.*
Del Pezzo, E.* |
| Keywords: | magnitude
Campi Flegrei |
| Issue Date: | Aug-2008 |
| Publisher: | Seismological Society of America |
| Title of journal: | Bulletin of the Seismological Society of America |
| Series/Report no.: | 4/98 (2008) |
| Abstract: | New duration-based local (ML) and moment (Mw) magnitude scales are
obtained for the Campi Flegrei area through analysis of a dataset of local volcanotectonic
earthquakes. First, the S-wave quality factor for the investigated area was
experimentally calculated, and then the distance-correction curve, log A0(r), to be
used in the Richter formula ML = log Amax − log A0(r), was numerically estimated
by measuring the attenuation properties and, hence, propagating a synthetic S-wave
packet in the earth medium. The local magnitude scale was normalized to fit the
Richter formula that was valid for Southern California at a distance of 10 km. ML
was estimated by synthesizing Wood–Anderson seismograms and measuring the
maximum amplitude. For the same dataset, the moment magnitude was obtained from
S-wave distance-corrected and site-corrected displacement spectra. Comparisons
between local and moment magnitudes determined, along with the old duration
magnitude (MD) routinely used at the Istituto Nazionale di Geofisica e Vulcanologia–
Osservatorio Vesuviano, are presented and discussed. Moreover, the relationships
between ML and Mw calculated for two reference sites are also derived. |
| URI: | http://hdl.handle.net/2122/4003 |
| URL: | http://www.bssaonline.org/cgi/reprint/98/4/1964?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&author1=petrosino&searchid=1&FIRSTINDEX=0&sortspec=relevance&resourcetype=HWCIT |
| DOI: | 10.1785/0120070131 |
| Appears in Collections: | Papers Published / Papers in press
04.06.99. General or miscellaneous
|
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