Determination of noise spectra from strong motion data recorded in Greece |
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| Authors: | AA Skarlatoudis CB Papazachos BN Margaris |
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| Institution: | (1) Geophysical Laboratory, University of Thessaloniki, P.O. box 352-1, GR-54006 Thessaloniki, Greece;(2) Institute of Engineering Seismology and Earthquake Engineering (ITSAK), P.O. box 53, GR-55102 Finikas Thessaloniki, Greece |
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| Abstract: | A large number of strong ground motions inGreece have been recorded by analogaccelerographs. The processing of analogstrong motion recordings and conversion toa digital form introduces noise in thesignal, due to the digitization andprocessing whichsignificantly affects the record. In thepresent paper a unified processing anddetermination of digitization andprocessing noise for the Greek strongmotion records is presented. Moreover,appropriate relations are proposed for thelower cut-off frequency with respect tothe epicentral distance and earthquakemagnitude for record filtering. |
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| Keywords: | cutoff frequency digitization noise strong motion records |
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