caa a22 4500 445847441 CHVBK 20180317145403.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s10518-010-9208-4 doi (NATIONALLICENCE)springer-10.1007/s10518-010-9208-4 High-frequency filtering of strong-motion records [Elektronische Daten] [John Douglas, David Boore] The influence of noise in strong-motion records is most problematic at low and high frequencies where the signal to noise ratio is commonly low compared to that in the mid-spectrum. The impact of low-frequency noise (<1Hz) on strong-motion intensity parameters such as ground velocities, displacements and response spectral ordinates can be dramatic and consequentially it has become standard practice to low-cut (high-pass) filter strong-motion data with corner frequencies often chosen based on the shape of Fourier amplitude spectra and the signal-to-noise ratio. It has been shown that response spectral ordinates should not be used beyond some fraction of the corner period (reciprocal of the corner frequency) of the low-cut filter. This article examines the effect of high-frequency noise (>5Hz) on computed pseudo-absolute response spectral accelerations (PSAs). In contrast to the case of low-frequency noise our analysis shows that filtering to remove high-frequency noise is only necessary in certain situations and that PSAs can often be used up to 100Hz even if much lower high-cut corner frequencies are required to remove the noise. This apparent contradiction can be explained by the fact that PSAs are often controlled by ground accelerations associated with much lower frequencies than the natural frequency of the oscillator because path and site attenuation (often modelled by Q and κ, respectively) have removed the highest frequencies. We demonstrate that if high-cut filters are to be used, then their corner frequencies should be selected on an individual basis, as has been done in a few recent studies. Springer Science+Business Media B.V., 2010 Strong-motion data nationallicence Ground-motion prediction equations nationallicence Ground-motion models nationallicence Filtering nationallicence Response spectra nationallicence Stochastic method nationallicence κ nationallicence Douglas John Earthquake Engineering Research Centre, University of Iceland, Austurvegur 2A, 800, Selfoss, Iceland aut Boore David US Geological Survey, Mail Stop 977, 345 Middlefield Road, 94025, Menlo Park, CA, USA aut Bulletin of Earthquake Engineering Springer Netherlands 9/2(2011-04-01), 395-409 1570-761X 9:2<395 2011 9 10518 https://doi.org/10.1007/s10518-010-9208-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10518-010-9208-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Douglas John Earthquake Engineering Research Centre, University of Iceland, Austurvegur 2A, 800, Selfoss, Iceland aut NATIONALLICENCE 700 1- Boore David US Geological Survey, Mail Stop 977, 345 Middlefield Road, 94025, Menlo Park, CA, USA aut NATIONALLICENCE 773 0- Bulletin of Earthquake Engineering Springer Netherlands 9/2(2011-04-01), 395-409 1570-761X 9:2<395 2011 9 10518 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer