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http://hdl.handle.net/2122/14469
Authors: | Schiappapietra, Erika* Felicetta, Chiara* D'Amico, Maria* |
Title: | Fling-Step Recovering from Near-Source Waveforms Database | Journal: | Geosciences | Series/Report no.: | /11(2021) | Publisher: | MDPI | Issue Date: | 4-Feb-2021 | DOI: | 10.3390/geosciences11020067 | Abstract: | We present an upgraded processing scheme (eBASCO, extended BASeline COrrection) to remove the baseline of strong-motion records by means of a piece-wise linear detrending of the velocity time history. Differently from standard processing schemes, eBASCO does not apply any filtering to remove the low-frequency content of the signal. This approach preserves both the long-period near-source ground-motion, featured by one-side pulse in the velocity trace, and the offset at the end of the displacement trace (fling-step). The software is suitable for a rapid identification of fling-containing waveforms within large strong-motion datasets. The ground displacement of about 600 three-component near-source waveforms has been recovered with the aim of (1) extensively testing the eBASCO capability to capture the long-period content of near-source records, and (2) compiling a qualified strong-motion flat-file useful to calibrate attenuation models for peak ground displacement (PGD), 5% damped displacement response spectra (DS), and permanent displacement amplitude (PD). The results provide a more accurate estimate of ground motions that can be adopted for different engineering purposes, such as performance-based seismic design of structures. |
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File | Description | Size | Format | |
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geosciences-11-00067-v2.pdf | 8.94 MB | Adobe PDF | View/Open |
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