Seismic Envelopes of Coda Decay for Q-coda Attenuation Studies of the Gargano Promontory (Southern Italy) and Surrounding Regions

Marilena Filippucci, Salvatore Lucente, Salvatore de Lorenzo, Edoardo Del Pezzo, Giacomo Prosser and Andrea Tallarico
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Marilena Filippucci: Department of Earth and Geo-Environmental Science, University of Bari Aldo Moro (UniBa), 70126 Bari, Italy
Salvatore Lucente: Department of Earth and Geo-Environmental Science, University of Bari Aldo Moro (UniBa), 70126 Bari, Italy
Salvatore de Lorenzo: Department of Earth and Geo-Environmental Science, University of Bari Aldo Moro (UniBa), 70126 Bari, Italy
Edoardo Del Pezzo: Osservatorio Vesuviano, National Institute of Geophysics and Volcanology (INGV), 80124 Napoli, Italy
Giacomo Prosser: Department of Science, University of Basilicata (UniBas), 85100 Potenza, Italy
Andrea Tallarico: Department of Earth and Geo-Environmental Science, University of Bari Aldo Moro (UniBa), 70126 Bari, Italy

Data, 2021, vol. 6, issue 9, 1-6

Abstract: Here, we describe the dataset of seismic envelopes used to study the S-wave Q-coda attenuation quality factor Q c of the Gargano Promontory (Southern Italy). With this dataset, we investigated the crustal seismic attenuation by the Q c parameter. We collected this dataset starting from two different earthquake catalogues: the first regarding the period from April 2013 to July 2014; the second regarding the period from July 2015 to August 2018. Visual inspection of the envelopes was carried out on recordings filtered with a Butterworth two-poles filter with central frequency f c = 6 Hz. The obtained seismic envelopes of coda decay can be linearly fitted in a bilogarithmic diagram in order to obtain a series of single source-receiver measures of Q c for each seismogram component at different frequency f c . The analysis of the trend Q c ( f c ) gives important insights into the heterogeneity and the anelasticity of the sampled Earth medium.

Keywords: seismic envelopes; Q-coda attenuation; seismic coda decay; Gargano Promontory (Southern Italy); seismic analysis code (SAC) (search for similar items in EconPapers)
JEL-codes: C8 C80 C81 C82 C83 (search for similar items in EconPapers)
Date: 2021
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