Broadband Waveform Modeling of Moderate Earthquakes in the San Francisco Bay Area and Preliminary Assessment of the USGS 3D Seismic Velocity Model

Rodgers, Arthur R.; Petersson, N. Anders; Nilsson, S.; Sjögreen, Björn; McCandless, Kathleen

doi:10.1785/0120060407

Cited by 46 publications

(28 citation statements)

References 40 publications

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“…1). The West Napa fault previously experienced an M 5 strike-slip event in 2000 but otherwise exhibited no previous definitive evidence of historic earthquake rupture (Rodgers et al, 2008;Wesling and Hanson, 2008). Evans et al (2012) found slip rates of ∼9:5 mm=yr along the West Napa fault, with most slip rate models for the Bay area placing higher slip rates and greater earthquake potential on the Rodger's Creek and Green Valley faults, respectively (e.g., Savage et al, 1999;d'Alessio et al, 2005;Funning et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Geodetic Constraints on the 2014 M 6.0 South Napa Earthquake

Barnhart

Murray

Yun

et al. 2015

Seismological Research Letters

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Section: Introductionmentioning

confidence: 99%

Geodetic Constraints on the 2014 M 6.0 South Napa Earthquake

Barnhart

Murray

Yun

et al. 2015

Seismological Research Letters

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“…In the literature, several methods for this purpose have been developed in earthquake engineering applications (Irikura and Kamae 1994;Beresnev and Atkinson 1997;Kamae et al 1998;Hartzell et al 1999;Pitarka et al 2000;Graves and Pitarka 2004;Liu et al 2006;Mena et al 2006;Pulido and Matsuoka 2006;Rodgers et al 2008;see Mai et al 2010). In broadband earthquake simulation spectra, for frequencies below 0.5 Hz, the simulations are obtained by low-pass filtering the SGF seismograms, whereas for the frequency higher than 0.5 Hz, the simulations are obtained by high-pass filtering of the EGF functions.…”

Section: Merging Procedures Of Empirical and Synthetic Green's Functionsmentioning

confidence: 99%

Physically based probabilistic seismic hazard analysis using broadband ground motion simulation: a case study for the Prince Islands Fault, Marmara Sea

et al. 2016

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The main motivation for this study was the impending occurrence of a catastrophic earthquake along the Prince Island Fault (PIF) in the Marmara Sea and the disaster risk around the Marmara region, especially in Istanbul. This study provides the results of a physically based probabilistic seismic hazard analysis (PSHA) methodology, using broadband strong ground motion simulations, for sites within the Marmara region, Turkey, that may be vulnerable to possible large earthquakes throughout the PIF segments in the Marmara Sea. The methodology is called physically based because it depends on the physical processes of earthquake rupture and wave propagation to simulate earthquake ground motion time histories. We included the effects of all considerable-magnitude earthquakes. To generate the high-frequency (0.5-20 Hz) part of the broadband earthquake simulation, real, small-magnitude earthquakes recorded by a local seismic array were used as empirical Green's functions. For the frequencies below 0.5 Hz, the simulations were obtained by using synthetic Green's functions, which are synthetic seismograms calculated by an explicit 2D/3D elastic finite difference wave propagation routine. By using a range of rupture scenarios for all considerablemagnitude earthquakes throughout the PIF segments, we produced a hazard calculation for frequencies of 0.1-20 Hz. The physically based PSHA used here followed the same procedure as conventional PSHA, except that conventional PSHA utilizes point sources or a series of point sources to represent earthquakes, and this approach utilizes the full rupture of earthquakes along faults. Furthermore, conventional PSHA predicts ground motion parameters by using empirical attenuation relationships, whereas this approach calculates synthetic seismograms for all magnitudes of earthquakes to obtain ground motion parameters. PSHA results were produced for 2, 10, and 50 % hazards for all sites studied in the Marmara region.

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“…Rodgers et al 2008), recently Galis et al (2013) have shown that accurate wave propagation in highly heterogeneous media can be challenging. In particular, by investigating the response of several numerical codes (including WPP) in the presence of strong random velocity perturbations, Galis et al (2013) have found that all tested methods return waveforms whose similarity decreases with frequency and epicentral distance.…”

Section: Source Representation a N D N U M E R I C A L M O D E L L I N Gmentioning

confidence: 99%

The role of topography and lateral velocity heterogeneities on near-source scattering and ground-motion variability

Imperatori

Martin

2015

Geophys. J. Int.

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Broadband Waveform Modeling of Moderate Earthquakes in the San Francisco Bay Area and Preliminary Assessment of the USGS 3D Seismic Velocity Model

Cited by 46 publications

References 40 publications

Geodetic Constraints on the 2014 M 6.0 South Napa Earthquake

Geodetic Constraints on the 2014 M 6.0 South Napa Earthquake

Physically based probabilistic seismic hazard analysis using broadband ground motion simulation: a case study for the Prince Islands Fault, Marmara Sea

The role of topography and lateral velocity heterogeneities on near-source scattering and ground-motion variability

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