The 1989 Loma Prieta earthquake, measuring magnitude 6.9, was the strongest to hit the San Francisco Bay Area since the Great San Francisco earthquake of 1906. Although it provided extensive data on ground shaking, the available observations don’t fully capture all the quake's important features.
Robert W Graves
Rob Graves is a geophysicist in the Earthquake Hazards Program.
Science and Products
Broadband Ground Motion Simulations for an Earthquake “Doublet” on the Newport-Inglewood and Palos Verdes Faults
Broadband Ground Motion Simulations for an Earthquake “Doublet” on the Hayward and Calaveras Faults
Broadband Ground Motion Simulations for 12 California Region Earthquakes

The 1989 Loma Prieta earthquake, measuring magnitude 6.9, was the strongest to hit the San Francisco Bay Area since the Great San Francisco earthquake of 1906. Although it provided extensive data on ground shaking, the available observations don’t fully capture all the quake's important features.

This ShakeMovie depicts a computer-generated simulation of the July 4, 2019 M6.4 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.
This ShakeMovie depicts a computer-generated simulation of the July 4, 2019 M6.4 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.

This ShakeMovie depicts a computer-generated simulation of the July 5, 2019 M7.1 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.
This ShakeMovie depicts a computer-generated simulation of the July 5, 2019 M7.1 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.

This ShakeMovie depicts a computer-generated simulation of the July 5, 2019 M7.1 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.
This ShakeMovie depicts a computer-generated simulation of the July 5, 2019 M7.1 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.

At the time of its occurrence, the 1994 Northridge earthquake produced one of the most comprehensive datasets of earthquake ground motion recordings to date. In spite of this, the spatial locations of instrumental observations do not provide sufficient resolution to fully visualize many of the important ground shaking features that occurred during this earthquake.
At the time of its occurrence, the 1994 Northridge earthquake produced one of the most comprehensive datasets of earthquake ground motion recordings to date. In spite of this, the spatial locations of instrumental observations do not provide sufficient resolution to fully visualize many of the important ground shaking features that occurred during this earthquake.
Reconciling bias in moderate magnitude earthquake ground motions predicted by numerical simulations
The 17 January 1994 Northridge, California, earthquake: A retrospective analysis
Using open-science workflow tools to produce SCEC CyberShake physics-based probabilistic seismic hazard models
Recent applications of the USGS National Crustal Model for Seismic Hazard Studies
Modern products for a vintage event: An update on the 1933 Long Beach, California, earthquake
Comparison of nonergodic ground-motion components from CyberShake and NGA-West2 datasets in California
Using a grid-search approach to validate the Graves-Pitarka broadband simulation method
Hybrid broadband ground-motion simulation validation of small magnitude active shallow crustal earthquakes in New Zealand
Validating predicted site response in sedimentary basins from 3D ground motion simulations
Refinements to the Graves–Pitarka kinematic rupture generator, including a dynamically consistent slip‐rate function, applied to the 2019 Mw 7.1 Ridgecrest earthquake
NGA-East Ground-Motion Characterization model part I: Summary of products and model development
NGA-East ground-motion characterization model Part II: Implementation and hazard implications
Science and Products
Broadband Ground Motion Simulations for an Earthquake “Doublet” on the Newport-Inglewood and Palos Verdes Faults
Broadband Ground Motion Simulations for an Earthquake “Doublet” on the Hayward and Calaveras Faults
Broadband Ground Motion Simulations for 12 California Region Earthquakes

The 1989 Loma Prieta earthquake, measuring magnitude 6.9, was the strongest to hit the San Francisco Bay Area since the Great San Francisco earthquake of 1906. Although it provided extensive data on ground shaking, the available observations don’t fully capture all the quake's important features.
The 1989 Loma Prieta earthquake, measuring magnitude 6.9, was the strongest to hit the San Francisco Bay Area since the Great San Francisco earthquake of 1906. Although it provided extensive data on ground shaking, the available observations don’t fully capture all the quake's important features.

This ShakeMovie depicts a computer-generated simulation of the July 4, 2019 M6.4 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.
This ShakeMovie depicts a computer-generated simulation of the July 4, 2019 M6.4 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.

This ShakeMovie depicts a computer-generated simulation of the July 5, 2019 M7.1 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.
This ShakeMovie depicts a computer-generated simulation of the July 5, 2019 M7.1 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.

This ShakeMovie depicts a computer-generated simulation of the July 5, 2019 M7.1 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.
This ShakeMovie depicts a computer-generated simulation of the July 5, 2019 M7.1 Ridgecrest, CA earthquake, and is based on a mathematical model of the earthquake faulting process and 3D wave propagation.

At the time of its occurrence, the 1994 Northridge earthquake produced one of the most comprehensive datasets of earthquake ground motion recordings to date. In spite of this, the spatial locations of instrumental observations do not provide sufficient resolution to fully visualize many of the important ground shaking features that occurred during this earthquake.
At the time of its occurrence, the 1994 Northridge earthquake produced one of the most comprehensive datasets of earthquake ground motion recordings to date. In spite of this, the spatial locations of instrumental observations do not provide sufficient resolution to fully visualize many of the important ground shaking features that occurred during this earthquake.