Room: 208C
Date: 4/18/2023
Session Time: 8:00 AM to 9:15 AM (local time)
High-frequency Ground Motion Measurements, Assessments and Predictions
High-frequency ground motion is critical for both seismologists, who can understand the source process, and engineers, who need to design structures with high natural frequency or structures hosting safety-related equipment sensitive to high frequency shaking (e.g., nuclear power plant). Although seismologists consider that high-frequency ground motions include frequencies larger than 1 Hz, while engineers are more interested in frequencies larger than 10 Hz, measuring, analyzing and modeling high-frequency ground motions are necessary for advancing the simulation of ground motions at broader ranges of frequencies and improving ground motion models. Particularly, high-frequency seismic waves tend to be affected by near-surface deposits significantly, hence the appropriate modeling and interpretation of high-frequency ground motions are essential to understand site effects more holistically. Thus, this session invites investigations on any aspects of the assessment of high-frequency ground motions and the improvement of current practices in site response estimations, which may include: (1) the variability in observations of high frequency ground motions, (2) the simulation of high-frequency ground motion, (3) the search of optimal site proxies to characterize site effects affected by shallow or deeper geologic structures, (4) numerical or empirical studies on 2D/3D site effects and the integration of the corresponding results into seismic hazard assessment, (5) site-specific ground motion prediction at high frequencies and its associated uncertainties, (6) in-situ characterization of attenuation, (7) ground motion models with explicit consideration of site attenuation and (8) near-surface and regional attenuation of seismic waves modeled with attenuation parameters such as the high-frequency spectral decay parameter kappa or the seismic quality factor, Q.
Conveners
Chunyang Ji, North Carolina State University (cji3@ncsu.edu)
Marco Pilz, German Research Center for Geosciences (pilz@gfz-potsdam.de)
Ashly Cabas, North Carolina State University (amcabasm@ncsu.edu)
Albert Kottke, Pacific Gas and Electric Company (albert.kottke@gmail.com)
Kenneth Campbell, CoreLogic (ken.w.campbell@comcast.net)
Oral Presentations
| Participant Role | Details | Start Time | Minutes | Action |
|---|---|---|---|---|
| Submission | A Model for Small-Strain Damping for the Groningen Field Constrained by Vertical Array Measurements | 08:00 AM | 15 | View |
| Submission | High Frequency Attenuation of Seismic Waves Due to the Heterogeneous Nature of the Crust : Theoretical Developments and Numerical Investigations | 08:15 AM | 15 | View |
| Submission | Empirical Correlations of Response Spectral Ordinates, Arias Intensity (AI) and Cumulative Absolute Velocity (CAV) With Fourier Spectral Ordinates of Ground-Motion and Associated Variabilities | 08:30 AM | 15 | View |
| Submission | Broadband Ground Motion Synthesis via Generative Adversarial Neural Operators | 08:45 AM | 15 | View |
| Submission | Rupture Directivity Effects Observed in Ground Motions From the 2022 M5.1 Alum Rock Earthquake | 09:00 AM | 15 | View |
| Total: | 75 Minute(s) |
High-frequency Ground Motion Measurements, Assessments and Predictions
Description