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Comment on ‘Magnitude conversion problem using general orthogonal regression’ by H. R. Wason, Ranjit Das and M. L. Sharma, (Geophys. J. Int., 190, 1091–1096)

By P. Gasperini and B. Lolli

Abstract

The argument proposed by Wason et al. that the conversion of magnitudes from a scale (e.g. Ms or mb) to another (e.g. Mw), using the coefficients computed by the general orthogonal regression method (Fuller) is biased if the observed values of the predictor (independent) variable are used in the equation as well as the methodology they suggest to estimate the supposedly true values of the predictor variable are wrong for a number of theoretical and empirical reasons. Hence, we advise against the use of such methodology for magnitude conversions.Published626-6273T. Pericolosità sismica e contributo alla definizione del rischioJCR Journalrestricte

Topics: Earthquake source observations, Statistical seismology, Computational seismology, 05. General::05.01. Computational geophysics::05.01.04. Statistical analysis
Publisher: 'Oxford University Press (OUP)'
Year: 2014
DOI identifier: 10.1093/gji/ggs077
OAI identifier: oai:www.earth-prints.org:2122/9549
Provided by: Earth-prints
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