SMAC強震記録の長周期成分の補正法について

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書誌事項

タイトル別名
  • CORRECTION OF LONG PERIOD COMPONENT OF SMAC ACCELEROGRAMS
  • SMAC キョウシン キロク ノ チョウシュウキ セイブン ノ ホセイホウ ニ

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説明

When response spectra determined from SMAC accelerograms are compared with thatfrom other kind of seismographs, the former gives larger value for the period range overabout 5 seconds than the latter. In order to investigate the recording characteristics oflonger period range of SMAC accelerogragh, a SMAC accelerogragh was shaken on ashaking table with other seismometers and displacement meters. The shift and fluctuationare induced in a SMAC record and these undesirable components have commonly so-called1/f spectral shape. The shift and drift of the pen is caused by a coupling between a defectof the link connecting the mass with the pen and a friction between pen and paper. Therefore, the drift of record must be removed from each record. The proposed correction methodcan make SMAC accelerograms compareable well with JMA strong motion seismograph ofdisplacement type less than 10 seconds of period range.

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