Open AccessComputer processing of New Zealand strong-motion accelerograms
Author(s) -
S. B. Hodder
Publication year - 1983
Publication title -
bulletin of the new zealand society for earthquake engineering/nzsee quarterly bulletin
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.917
H-Index - 36
eISSN - 2324-1543
pISSN - 1174-9857
DOI - 10.5459/bnzsee.16.3.234-246
Subject(s) - displacement (psychology) , frequency domain , computer science , ground motion , motion (physics) , data processing , frequency band , acoustics , computer vision , geology , telecommunications , seismology , physics , database , bandwidth (computing) , psychology , psychotherapist
Recently implemented modifications to the computer processing of earthquake accelerograms are described. The main extensions to the system include dynamic instrument correction, robust band-pass filtering and accurate integration, all implemented in the frequency domain. The processed records now provide accurate representations of strong ground motion within the frequency band from 0.25 Hz to 24.5 Hz: full accuracy is maintained in the computed velocity and displacement signals. The use of the new processing system is demonstrated using two previously recorded accelerograms.