Waveform Benchmarking Comparisons for Selected Earthquake Records Processed With Prism, Sara, and Gmprocess
Description:
We present preliminary results of comparisons of processed waveform products and waveform intensity metrics calculated by three different software programs. The Center for Engineering Strong Motion Data (CESMD) provides raw and processed strong motion waveform data to the earthquake engineering community at strongmotioncenter.org. These data are an important resource for both ground motion research and for practitioners who need to understand the impacts quickly after an earthquake. Currently, the software used by the U. S. Geological Survey (USGS) National Strong Motion Project (NSMP) and the California Geological Survey’s Strong Motion Instrumentation Program (CSMIP) to process waveforms is the Processing and Review Interface for Strong Motion data (PRISM) and the Strong-motion Automated Recovery and Analysis (SARA), respectively. In parallel, USGS has developed ground motion processing software (gmprocess) in part to support ShakeMap operations that provides expanded functionality. We begin these comparisons starting with ground motion records for the M6.4 December 20, 2022, Ferndale, CA; M5.3 February 27, 2021, Point MacKenzie, AK; and the March 18, 2020, M5.7 Magna, UT, earthquakes. This selection of earthquakes offers a variety of epicentral distances and near-surface characteristics from a sampling of different tectonic domains. These comparisons focus on quantifying differences in acceleration, velocity, displacement, and spectral acceleration products at both free-field stations and structural (building, dam, bridge, and geotechnical) arrays. With these comparisons we aim to streamline and standardize our waveform processing workflows and identify and resolve any inconsistencies between the different software programs.
Session: ShakeMap-related Research, Development, Operations, Applications and Uses [Poster]
Type: Poster
Date: 4/19/2023
Presentation Time: 08:00 AM (local time)
Presenting Author: Lisa S. Schleicher
Student Presenter: No
Invited Presentation:
Authors
Lisa Schleicher Presenting Author Corresponding Author lschleicher@usgs.gov U.S. Geological Survey |
Eric Thompson emthompson@usgs.gov U.S. Geological Survey, |
Lijam Hagos lijam.hagos@conservation.ca.gov California Geological Survey |
Jeff Brody jbrody@usgs.gov U.S. Geological Survey |
Jamison Steidl steidl@ucsb.edu University of California, Santa Barabara |
Hamid Haddadi hamid.haddadi@conservation.ca.gov California Geological Survey |
Lind Gee lgee@usgs.gov U.S. Geological Survey |
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Waveform Benchmarking Comparisons for Selected Earthquake Records Processed With Prism, Sara, and Gmprocess
Category
ShakeMap-related Research, Development, Operations, Applications and Uses