Skip to main content
U.S. flag

An official website of the United States government

Processing of strong-motion accelerograms: Needs, options and consequences

January 1, 2005

Recordings from strong-motion accelerographs are of fundamental importance in earthquake engineering, forming the basis for all characterizations of ground shaking employed for seismic design. The recordings, particularly those from analog instruments, invariably contain noise that can mask and distort the ground-motion signal at both high and low frequencies. For any application of recorded accelerograms in engineering seismology or earthquake engineering, it is important to identify the presence of this noise in the digitized time-history and its influence on the parameters that are to be derived from the records. If the parameters of interest are affected by noise then appropriate processing needs to be applied to the records, although it must be accepted from the outset that it is generally not possible to recover the actual ground motion over a wide range of frequencies. There are many schemes available for processing strong-motion data and it is important to be aware of the merits and pitfalls associated with each option. Equally important is to appreciate the effects of the procedures on the records in order to avoid errors in the interpretation and use of the results. Options for processing strong-motion accelerograms are presented, discussed and evaluated from the perspective of engineering application. ?? 2004 Elsevier Ltd. All rights reserved.

Publication Year 2005
Title Processing of strong-motion accelerograms: Needs, options and consequences
DOI 10.1016/j.soildyn.2004.10.007
Authors D. M. Boore, J.J. Bommer
Publication Type Article
Publication Subtype Journal Article
Series Title Soil Dynamics and Earthquake Engineering
Index ID 70029089
Record Source USGS Publications Warehouse