Abstract
In the analysis of dense instrument array data obtained by independent triggering and recording systems, it is inevitably necessary to understand the accuracy of the data. Such requirement is particularly severe when ground strains induced during earthquakes are evaluated from differential ground displacements at several observing points. Errors associated with numerical integration of acceleration records at low frequency range and difference of sensitivities between instruments are likely to develop unrealistic ground strains. This paper presents experimental analysis on the effect of lower cut-off frequency of instrument correction filter, number of bits of AD converter and its sampling interval on accuracy of calculated displacement. And reliability of relative displacements evaluated from the records by plural instruments is also presented.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.