Robert W Graves
Rob Graves is a geophysicist in the Earthquake Hazards Program.
Science and Products
Filter Total Items: 65
NGA-East Ground-Motion Characterization model part I: Summary of products and model development NGA-East Ground-Motion Characterization model part I: Summary of products and model development
In this article, we present an overview of the research project NGA-East, Next Generation Attenuation for Central and Eastern North America (CENA), and summarize the key methodology and products. The project was tasked with developing a new ground motion characterization (GMC) model for CENA. The final NGA-East GMC model includes a set of 17 median ground motion models (GMMs) for peak...
Authors
Christine A. Goulet, Yousef Bozorgnia, Nicolas Kuehn, Linda Al Atik, Robert Youngs, Robert Graves, Gail M. Atkinson
NGA-East ground-motion characterization model Part II: Implementation and hazard implications NGA-East ground-motion characterization model Part II: Implementation and hazard implications
As a companion article to Goulet et al., we describe implementation of the NGA-East ground motion characterization (GMC) model in probabilistic seismic hazard analysis (PSHA) for sites in the Central and Eastern United States (CEUS). We present extensions to the EPRI/DOE/NRC seismic source characterization (SSC) model for the CEUS needed for full implementation of NGA-East. Comparisons...
Authors
Robert Youngs, Christine A. Goulet, Yousef Bozorgnia, Nicolas Kuehn, Linda Al Atik, Robert Graves, Gail M. Atkinson
Ground motions in urban Los Angeles from the 2019 Ridgecrest earthquake sequence Ground motions in urban Los Angeles from the 2019 Ridgecrest earthquake sequence
We study ground-motion response in urban Los Angeles during the two largest events (M7.1 and M6.4) of the 2019 Ridgecrest earthquake sequence using recordings from multiple regional seismic networks as well as a subset of 350 stations from the much denser Community Seismic Network. In the first part of our study, we examine the observed response spectral (pseudo) accelerations for a...
Authors
Filippos Filippitzis, Monica Kohler, Tom Heaton, Robert Graves, Robert W. Clayton, Richard G. Guy, J. J. Bunn, K. M. Chandy
Regional calibration of hybrid ground‐motion simulations in moderate seismicity areas: Application to the Upper Rhine Graben Regional calibration of hybrid ground‐motion simulations in moderate seismicity areas: Application to the Upper Rhine Graben
This study presents the coupling of the spectral decomposition results for anelastic attenuation, stress drop, and site effects with the Graves‐Pitarka (GP) hybrid ground‐motion simulation methodology, as implemented on the Southern California Earthquake Center (SCEC) broadband platform (BBP). It is targeted to applications in the Upper Rhine graben (URG), which is among the seismically...
Authors
Hoby N. T. Razafindrakoto, Fabrice Cotton, Dino Bindi, Marco Pilz, Robert Graves, Sanjay Bora
Tall building performance-based seismic design using SCEC broadband platform site-specific ground motion simulations Tall building performance-based seismic design using SCEC broadband platform site-specific ground motion simulations
The scarcity of strong ground motion records presents a challenge for making reliable performance assessments of tall buildings whose seismic design is controlled by large-magnitude and close-distance earthquakes. This challenge can be addressed using broadband ground-motion simulation methods to generate records with site-specific characteristics of large-magnitude events. In this paper
Authors
Kuanshi Zhong, Ting Lin, Greg Deierlein, Robert Graves, Fabio Silva, Nico Luco
Shallow basin structure and attenuation are key to predicting long shaking duration in Los Angeles Basin Shallow basin structure and attenuation are key to predicting long shaking duration in Los Angeles Basin
Ground motions in the Los Angeles Basin during large earthquakes are modulated by earthquake ruptures, path effects into the basin, basin effects, and local site response. We analyzed the direct effect of shallow basin structures on shaking duration at a period of 2–10 s in the Los Angeles region through modeling small magnitude, shallow, and deep earthquake pairs. The source depth...
Authors
Voon H Lai, Robert Graves, Chunquan Yu, Zhongwen Zhan, Don Helmberger
Science and Products
Filter Total Items: 65
NGA-East Ground-Motion Characterization model part I: Summary of products and model development NGA-East Ground-Motion Characterization model part I: Summary of products and model development
In this article, we present an overview of the research project NGA-East, Next Generation Attenuation for Central and Eastern North America (CENA), and summarize the key methodology and products. The project was tasked with developing a new ground motion characterization (GMC) model for CENA. The final NGA-East GMC model includes a set of 17 median ground motion models (GMMs) for peak...
Authors
Christine A. Goulet, Yousef Bozorgnia, Nicolas Kuehn, Linda Al Atik, Robert Youngs, Robert Graves, Gail M. Atkinson
NGA-East ground-motion characterization model Part II: Implementation and hazard implications NGA-East ground-motion characterization model Part II: Implementation and hazard implications
As a companion article to Goulet et al., we describe implementation of the NGA-East ground motion characterization (GMC) model in probabilistic seismic hazard analysis (PSHA) for sites in the Central and Eastern United States (CEUS). We present extensions to the EPRI/DOE/NRC seismic source characterization (SSC) model for the CEUS needed for full implementation of NGA-East. Comparisons...
Authors
Robert Youngs, Christine A. Goulet, Yousef Bozorgnia, Nicolas Kuehn, Linda Al Atik, Robert Graves, Gail M. Atkinson
Ground motions in urban Los Angeles from the 2019 Ridgecrest earthquake sequence Ground motions in urban Los Angeles from the 2019 Ridgecrest earthquake sequence
We study ground-motion response in urban Los Angeles during the two largest events (M7.1 and M6.4) of the 2019 Ridgecrest earthquake sequence using recordings from multiple regional seismic networks as well as a subset of 350 stations from the much denser Community Seismic Network. In the first part of our study, we examine the observed response spectral (pseudo) accelerations for a...
Authors
Filippos Filippitzis, Monica Kohler, Tom Heaton, Robert Graves, Robert W. Clayton, Richard G. Guy, J. J. Bunn, K. M. Chandy
Regional calibration of hybrid ground‐motion simulations in moderate seismicity areas: Application to the Upper Rhine Graben Regional calibration of hybrid ground‐motion simulations in moderate seismicity areas: Application to the Upper Rhine Graben
This study presents the coupling of the spectral decomposition results for anelastic attenuation, stress drop, and site effects with the Graves‐Pitarka (GP) hybrid ground‐motion simulation methodology, as implemented on the Southern California Earthquake Center (SCEC) broadband platform (BBP). It is targeted to applications in the Upper Rhine graben (URG), which is among the seismically...
Authors
Hoby N. T. Razafindrakoto, Fabrice Cotton, Dino Bindi, Marco Pilz, Robert Graves, Sanjay Bora
Tall building performance-based seismic design using SCEC broadband platform site-specific ground motion simulations Tall building performance-based seismic design using SCEC broadband platform site-specific ground motion simulations
The scarcity of strong ground motion records presents a challenge for making reliable performance assessments of tall buildings whose seismic design is controlled by large-magnitude and close-distance earthquakes. This challenge can be addressed using broadband ground-motion simulation methods to generate records with site-specific characteristics of large-magnitude events. In this paper
Authors
Kuanshi Zhong, Ting Lin, Greg Deierlein, Robert Graves, Fabio Silva, Nico Luco
Shallow basin structure and attenuation are key to predicting long shaking duration in Los Angeles Basin Shallow basin structure and attenuation are key to predicting long shaking duration in Los Angeles Basin
Ground motions in the Los Angeles Basin during large earthquakes are modulated by earthquake ruptures, path effects into the basin, basin effects, and local site response. We analyzed the direct effect of shallow basin structures on shaking duration at a period of 2–10 s in the Los Angeles region through modeling small magnitude, shallow, and deep earthquake pairs. The source depth...
Authors
Voon H Lai, Robert Graves, Chunquan Yu, Zhongwen Zhan, Don Helmberger