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Regional low-magnitude GMPE to estimate spectral accelerations for earthquake early warning applications in southern Italy

Elisa Zuccolo, Francesca Bozzoni and Carlo G. Lai
Regional low-magnitude GMPE to estimate spectral accelerations for earthquake early warning applications in southern Italy
Seismological Research Letters (November 2016) 88 (1): 61-71

Abstract

A low-magnitude regional ground-motion prediction equation (GMPE) for peak ground acceleration and 5% damped spectral acceleration at 11 oscillator periods ranging from 0.1 to 3 s was developed for applications of the earthquake early warning system operating in southern Italy. The accelerometric dataset was built out of 2270 waveforms from 319 earthquakes with local magnitude ranging from 1.5 to 4.2, recorded from 60 stations located on soil type B, according to the Italian Building Code and Eurocode 8, with hypocentral distances ranging from 3 to about 100 km. The GMPE coefficients were computed through a nonlinear weighted damped least-squares algorithm, attributing a higher weight to ground-motion data recorded at stations for which soil category was established using geotechnical and geophysical measurements. Predictions of the proposed GMPE were tested against independent ground-motion data recorded in southern Italy and compared with other regional and global GMPEs through the log-likelihood method. The comparison shows that the proposed GMPE performs better than any other GMPE considered in this study.


ISSN: 0895-0695
EISSN: 1938-2057
Serial Title: Seismological Research Letters
Serial Volume: 88
Serial Issue: 1
Title: Regional low-magnitude GMPE to estimate spectral accelerations for earthquake early warning applications in southern Italy
Affiliation: University of Pavia, Department of Civil Engineering and Architecture, Pavia, Italy
Pages: 61-71
Published: 20161116
Text Language: English
Publisher: Seismological Society of America, El Cerrito, CA, United States
References: 29
Accession Number: 2017-001302
Categories: SeismologyApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch maps
N40°10'00" - N41°10'00", E14°00'00" - E16°00'00"
Secondary Affiliation: European Centre for Training and Research in Earthquake Engineering, ITA, Italy
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201701
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