Impact of Magnitude Selection on Aleatory Variability Associated with Ground‐Motion Prediction Equations: Part I—Local, Energy, and Moment Magnitude Calibration and Stress‐Drop Variability in Central Italy

• DOI: 10.1785/0120170356
• Publication Date: 2018-05-01T12:18:13Z
• Authors: D. Bindi; D. Spallarossa; M. Picozzi; D. Scafidi; F. Cotton
• Keywords: Moment magnitude scale

Research Article| May 01, 2018 Impact of Magnitude Selection on Aleatory Variability Associated with Ground‐Motion Prediction Equations: Part I—Local, Energy, and Moment Calibration Stress‐Drop in Central Italy D. Bindi; Bindi aGerman Centre for Geosciences GFZ, Telegrafenberg, 14473 Potsdam, Germany, [e-mail], fcotton@gfz‐potsdam.de Search other works by this author on: GSW Google Scholar Spallarossa; Spallarossa bDipartimento di Scienze della Terra, dell'Ambiente e Vita, Universita' Genova, Viale Benedetto XV 5, 16132 Genoa, Italy, [e-mail], [e-mail] M. Picozzi; Picozzi cDepartment Physics, University Naples Federico II, Complesso Universitario Monte Sant'Angelo, Via Cinthia 21, 80126 Naples, [e-mail] Scafidi; Scafidi F. Cotton fcotton@gfz‐potsdam.dedAlso at Institute Earth Environmental Sciences, Germany. Author Article Information Publisher: Seismological Society America First Online: 01 Online Issn: 1943-3573 Print 0037-1106 © Bulletin the (2018) 108 (3A): 1427–1442. https://doi.org/10.1785/0120170356 history Cite View This Citation Add to Manager Share Icon Facebook Twitter LinkedIn MailTo Tools Get Permissions Site Bindi, Spallarossa, Picozzi, Scafidi, Cotton; Italy. 2018;; doi: Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Dropdown Menu input auto suggest filter your All ContentBy SocietyBulletin Advanced Abstract In study, we analyzed 10 yrs seismicity central from 2008 2017, a period witnessing more than 1400 earthquakes magnitude range 2.5≤Mw≤6.5⁠. The data set includes main sequences that have occurred area, including those associated 2009 Mw 6.3 L'Aquila earthquake 2016–2017 sequence (⁠Mw 6.2 Amatrice, 6.1 Visso, 6.5 Norcia earthquakes). We calibrated local scale, investigating impact changing reference distance which nonparametric attenuation is tied zero‐magnitude function southern California. also developed an model compute radiated seismic energy (⁠Es⁠) time integral squared ground‐motion velocity. Seismic moment (⁠M0⁠) stress drop (⁠Δσ⁠) were estimated each fitting ω‐square source spectra obtained applying spectral inversion. Δσ‐values vary over three orders about 0.1 MPa, larger values mainshocks. describe lognormal distribution mean standard deviation equal log(Δσ)=(−0.25±0.45) (i.e., Δσ 0.57 95% confidence interval 0.08 4.79 MPa). variability introduces spread versus moment, differences up two magnitudes same moment. high‐frequency levels captured (⁠ML⁠), scales as ML=(−1.59+0.52logEs) logEs≤10.26 ML=(−1.38+0.50logEs) otherwise. As peak ground velocity increases increasing Δσ⁠, perform better predictors shaking potential. availability different parameters large population will help characterize between‐event You do not access content, please speak institutional administrator if you feel should access.