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The Ranges of Uncertainty Among the Use of NGA-West1 and NGA-West 2 Ground Motion Prediction Equations Read chapter Read first chapter

2019 | OriginalPaper | Chapter

4. Towards an Automated Kappa Measurement Procedure

Authors : Tim Sonnemann, Benedikt Halldorsson

Published in: Proceedings of the International Conference on Earthquake Engineering and Structural Dynamics

Publisher: Springer International Publishing

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Abstract

We present an automatic algorithm for measuring the high-frequency acceleration spectral decay parameter (κ) on seismic records of strong ground motion. This task is often done manually due to the strongly varying quality and characteristics of earthquake recordings, such that an adaptive algorithm is required to mostly reproduce manual measurements but in a less subjective way. We prepended a P- and S-phase picking algorithm to achieve complete automation, and we discuss the common pitfalls for such attempts regarding both algorithms. To test the measurement schemes, a dataset of accelerograms from South Icelandic earthquakes is used on which all parameters have been determined manually as well. The proposed program facilitates automatic creation of κ-value databases from input record databases, which might be used in regional hazard analyses and to better constrain earthquake source parameter inversions.

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previous chapter Bayesian Hierarchical Model of Peak Ground Acceleration for the Icelandic Strong-Motion Arrays
next chapter Application of MASW in the South Iceland Seismic Zone
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Metadata
Title
Towards an Automated Kappa Measurement Procedure
Authors
Tim Sonnemann
Benedikt Halldorsson
Copyright Year
2019
Book
Proceedings of the International Conference on Earthquake Engineering and Structural Dynamics

Print ISBN: 978-3-319-78186-0

Electronic ISBN: 978-3-319-78187-7

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-319-78187-7_4

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