A Holistic Evaluation of Various Site-Response Estimation Techniques: Ergodic Models, Theoretical Borehole and Outcrop Responses Using GRA and HVSR-Based Empirical Correction
Session: How Well Can We Assess Site Effects So Far? I
Type: Oral
Date: 4/20/2021
Presentation Time: 10:15 AM Pacific
Description:
In this study, we assess the performance of site-response estimation techniques. The first approach is to use ergodic models based on site characterization proxy(s), e.g., VS30, f0, slope gradient and surface geology. The second method is via GRA which requires more detailed site information, i.e., 1D ground models. The third technique is to correct the single-station earthquake HVSR using predefined correction spectra. Site-response estimates from these approaches are compared with observations (benchmark) at 145 KiK-net sites. Benchmark site-responses are derived using the surface-to-borehole spectral ratio (SBSR, borehole response) and the general inversion technique (GIT, outcrop response). We will present the preliminary results of the comparison in this session.
Presenting Author: Chuanbin Zhu
Student Presenter: No
Authors
Chuanbin Zhu Presenting Author Corresponding Author chuanbin@gfz-potsdam.de GFZ German Research Centre for Geosciences |
Fabrice Cotton fcotton@gfz-potsdam.de GFZ German Research Centre for Geosciences |
Marco Pilz pilz@gfz-potsdam.de GFZ German Research Centre for Geosciences |
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A Holistic Evaluation of Various Site-Response Estimation Techniques: Ergodic Models, Theoretical Borehole and Outcrop Responses Using GRA and HVSR-Based Empirical Correction
Category
How Well Can We Assess Site Effects So Far?