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Applying a Change-Point Detection Method on Frequency-Magnitude Distributions

¹ University of Caen, F-14000 France
CNRS, UMR 6143 M2C
Caen, F-14000 France
daniel.amorese{at}unicaen.fr

A method based on nonparametric statistics (hereafter called "median- based analysis of the segment slope," MBASS) is applied for the detection of change points in frequency magnitude distributions (FMDs). The determination of the lowest magnitude for which the Gutenberg–Richter relation still applies is a key point for the computation of reliable b-values. The change-point detection method presented here is used to determine automatically this threshold magnitude (called m₀ in this ing when FMDs are analyzed by eye.

Online material: Source code for detection of change-points and NIED sample data set.

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