Referenced Empirical Ground-Motion Model for Eastern North America

Hassani, Behzad; Atkinson, Gail M.

doi:10.1785/0220140156

Cited by 25 publications

(42 citation statements)

References 35 publications

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“…The magnitude-distance distribution for this study is similar to the distribution of the data used by Hassani and Atkinson (2015), although Hassani and Atkinson (2015) used epicentral distance and did not report event depths. In terms of the V S30 distribution, the dataset of Hassani and Atkinson (2015) is also dominated by sites with larger V S30 , but it is important to note that they did not use their data to evaluate V S30 scaling. Figure 5 shows the number of earthquake events ( Figure 5a) and ground motion recordings ( Figure 5b) included in the database as a function of spectral period for different magnitude ranges.…”

Section: Ground Motion Database For Texas Oklahoma and Kansassupporting

confidence: 56%

Ground Motion Model for Small-to-Moderate Earthquakes in Texas, Oklahoma, and Kansas

Zalachoris

Rathje

2019

Earthquake Spectra

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A ground motion model (GMM) tuned to the characteristics of the observed, and potentially induced, seismicity in Texas, Oklahoma, and Kansas is developed using a database of 4,528 ground motions recorded during 376 events of Mw > 3.0 in the region. The GMM is derived using the referenced empirical approach with an existing Central and Eastern North America model as the reference GMM and is applicable for Mw = 3.0–5.8 and hypocentral distances less than 500 km. The proposed model incorporates weaker magnitude scaling than the reference GMM for periods less than about 1.0 s, resulting in smaller predicted ground motions at larger magnitudes. The proposed model predicts larger response spectral accelerations at short hypocentral distances (≤20 km), which is likely because of the shallow hypocenters of events in Texas, Oklahoma, and Kansas. Finally, the VS30 scaling for the newly developed model predicts less amplification at VS30 < 600 m/s than the reference GMM, which is likely because of the generally thinner sediments in the study area. This finding is consistent with recent studies regarding site amplification in Central and Eastern North America.

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Section: Ground Motion Database For Texas Oklahoma and Kansassupporting

confidence: 56%

Ground Motion Model for Small-to-Moderate Earthquakes in Texas, Oklahoma, and Kansas

Zalachoris

Rathje

2019

Earthquake Spectra

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“…All other earthquakes are classified as tectonic. Although the attenuation of ground motions is different in the Gulf Coast region (Hassani and Atkinson, 2015), we do not separate them in this study. Because the focus of this study is on induced earthquakes, we do not expect a difference in conclusions by including Gulf Coast region motions.…”

Section: Ground-motion Collection and Filteringmentioning

confidence: 99%

Assessing Ground‐Motion Amplitudes and Attenuation for Small‐to‐Moderate Induced and Tectonic Earthquakes in the Central and Eastern United States

Gupta

Baker

Ellsworth

2017

Seismological Research Letters

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In this article, we evaluate the ground-motion prediction equations (GMPEs) described by Atkinson (2015) and Shahjouei and Pezeshk (2016) with ground-motion data collected from the central and eastern United States (CEUS). The former GMPE was developed for small-to-moderate events at short hypocentral distances with application to induced earthquakes in eastern North America, using the ground-motion database developed by the Next Generation Attenuation-West2 (NGA-West2) project (Bozorgnia et al., 2014). The latter GMPE was developed for the central and eastern North America for the NGA-East project (Frankel, 2015). We compare spectral amplitudes from 46,178 ground-motion recordings at 1069 stations from 2873 earthquakes in the CEUS to the GMPEs. The ground-motion catalog is divided into potentially-induced and tectonic earthquakes using the classification scheme of Petersen et al. (2015), and their differences in geometric spreading are observed. We observe that the Atkinson (2015) GMPE is a good fit for ground motions at hypocentral distances of less than 60 km, and that the Shahjouei and Pezeshk (2016) GMPE captures the geometric spreading of ground motions at larger distances, for both induced and tectonic earthquakes.

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“…A third method is the referenced empirical approach introduced by Atkinson (2008). It is similar to the hybrid empirical method in concept but adjustment factors are determined empirically using spectral ratios of observed motions in the target region to predictions of an empirical GMPE in the host region (e.g., Atkinson, 2008Atkinson, , 2010Boore, 2011, Atkinson andMotazedian, 2013;Hassani and Atkinson, 2015).…”

Section: Introductionmentioning

confidence: 99%

Regionally Adjustable Generic Ground‐Motion Prediction Equation Based on Equivalent Point‐Source Simulations: Application to Central and Eastern North America

Yenier

Atkinson

2015

Bulletin of the Seismological Society of America

139

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We develop a generic ground-motion prediction equation (GMPE) that can be adjusted for use in any region by modifying a few key model parameters. The basis of the GMPE is an equivalent point-source simulation model whose parameters have been calibrated to empirical data in California, in such a way as to determine the decoupled effects of basic source and attenuation parameters on ground-motion amplitudes. We formulate the generic GMPE as a function of magnitude, distance, stress parameter, geometrical spreading rate, and anelastic attenuation. This provides a fully adjustable predictive model, allowing users to calibrate its parameters using observed motions in the target region. We also include an empirical calibration factor to account for residual effects that are different from and/or missing in simulations compared to observed motions in the target region. As an example, we show how the generic GMPE can be adjusted for use in central and eastern North America (CENA), and calibrated with the Next Generation Attenuation-East database. We provide median predictions of ground motions in CENA for average horizontal-component peak ground motions and 5% damped pseudospectral acceleration (periods up to T 10 s), for magnitudes M 3-8 and distances up to 600 km.

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Referenced Empirical Ground-Motion Model for Eastern North America

Cited by 25 publications

References 35 publications

Ground Motion Model for Small-to-Moderate Earthquakes in Texas, Oklahoma, and Kansas

Ground Motion Model for Small-to-Moderate Earthquakes in Texas, Oklahoma, and Kansas

Assessing Ground‐Motion Amplitudes and Attenuation for Small‐to‐Moderate Induced and Tectonic Earthquakes in the Central and Eastern United States

Regionally Adjustable Generic Ground‐Motion Prediction Equation Based on Equivalent Point‐Source Simulations: Application to Central and Eastern North America

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