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Comment on “Empirical determination of depth‐distance corrections for m b and M W from Global Seismograph Network Stations” By Guust Nolet, Steve Krueger and Robert M. Clouser
Author(s) -
Murphy J. R.,
McLaughlin K. L.
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1998gl900180
Subject(s) - seismometer , geology , seismology , geodesy , focal length , petroleum engineering , lens (geology)
In their recent article, Nolet et al. (1998) presented an analysis which led them to conclude that the epicentral distance and focal depth correction factors for m b which were previously published by Veith and Clawson (1972) are not accurate for events with focal depths greater than 100 km. In this brief commentary, we present some independent evidence which has led us to conclude that the Veith/Clawson (V/C) corrections are in fact quite accurate, at least for seismic events having focal depths of less than about 400 km.