Room: Exhibit Hall
Date: 4/16/2025
Session Time: 8:00 AM to 5:45 PM (local time)
Recent Advances in Modeling Near-source Ground Motions for Seismic Hazard Applications
In recent years, modeling efforts that characterize the earthquake source in greater detail have enabled a better understanding of earthquake behavior and resulting broadband ground motion. For example, modeling the geometry of fault surfaces and propagation of rupture has helped map source properties into ground motion amplification patterns and variability. This improved accuracy from modeling finite-fault effects can be influential in studies investigating predictions of earthquake ground motions and other downstream efforts involving seismic hazard assessment. Here, we invite studies that model earthquake source processes targeting improved ground shaking via either empirical or simulation-based approaches. Example topics of interest include observations of azimuthally varying ground motion, rupture directivity from both small and large events, polarization of ground motion records, complex source modeling using kinematic or dynamic ruptures, and near-source efforts that study median and ground motion variability terms, isolated in terms of either intra- or inter-event standard deviation. Studies using machine learning methods, utilizing both empirical and synthetic datasets are welcomed as well.
Conveners
Jeff Bayless, AECOM (jeff.bayless@aecom.com)
Nick Gregor, Consultant (nick@ngregor.com)
Evan Hirakawa, U.S. Geological Survey (ehirakawa@usgs.gov)
Grace Parker, U.S. Geological Survey (gparker@usgs.gov)
Badie Rowshandel, California Earthquake Authority (browshandel@calquake.com)
Kyle B. Withers, U.S. Geological Survey (kwithers@usgs.gov)
Poster Presentations
| Participant Role | Details | Action |
|---|---|---|
| Submission | Modeling Path Effects From 3D Velocity Structure in the San Francisco Bay Area | View |
| Submission | A Near-source Saturation Model for EAS Based on the NGA-west3 Database | View |
| Submission | Linear and Nonlinear Site Effects at Several Sites in the Noto-hanto Area in Japan and Its Possible Cause as 2D/3D Deep Basin Resonance | View |
| Submission | Rupture Process and Ground Motion Complexity of the February 6, 2023, Mw 7.8 Kahramanmaraş Earthquake in Türkiye: Insights from Analysis of Deterministic Broad-band Simulations using a Regional 1D Velocity Model | View |
| Submission | Quantifying Uncertainties in Earthquake Source Models: Implications of Slip Distribution Variations and Fault Parameters on Ground Motion Studies | View |
| Submission | Kinematic Source Variability in Ground-motion Simulations and Implications for Seismic Hazard Analysis | View |
| Submission | Assessment of Site-specific Features in and Around Varanasi City, Uttar Pradesh, India, Using Microtremor Measurements | View |
| Submission | Nonergodic Seismic Hazard Assessment Based on Multi-cycle Earthquake Simulations | View |
| Submission | Methods for Evaluating and Improving Rupture Directivity Modeling in Seismic Hazard Assessment | View |
Recent Advances in Modeling Near-source Ground Motions for Seismic Hazard Applications [Poster]
Description