DOI: 10.1785/bssa0600030917. Integrated and frequency-band magnitude, two alternative measures of the size of an earthquake

Integrated and frequency-band magnitude, two alternative measures of the size of an earthquake

10.1785/bssa0600030917

Crossref journal-article

Seismological Society of America (SSA)

Bulletin of the Seismological Society of America (790)

Abstract

Abstract Integrated magnitude substitutes the r.m.s. average amplitude over a pre-selected interval for the peak amplitude in the conventional body-wave magnitude formula. Frequency-band magnitude uses an equivalent quantity in the frequency domain. Integrated magnitude exhibits less scatter than conventional body-wave magnitude for short-period seismograms. Frequency-band magnitude exhibits less scatter than body-wave magnitude or integrated magnitude for both long- and short-period seismograms. The scatter of frequency-band magnitude is probably due to real azimuthal effects, crustal-transfer-function variations, errors in compensation for seismograph response, microseismic moise and uncertainties in the compensation for attenuation with distance. To observe azimuthal variations clearly, the crustal-transfer functions and seismograph response need to be known more precisely than was the case in this experiment, because these two sources of scatter can be large enough to explain all of the observed variations.

Bibliography

Howell, B. F., Lundquist, G. M., & Yiu, S. K. (1970). Integrated and frequency-band magnitude, two alternative measures of the size of an earthquake. Bulletin of the Seismological Society of America, 60(3), 917â937.

Authors 3

B. F. Howell (first)
G. M. Lundquist (additional)
S. K. Yiu (additional)

References 18 Referenced 7

10.1190/1.1439348 / Geophysics / Operational magnification and physical environment of seismograph stations by Alsop ((1964))
10.1029/TR036i005p00861 / Trans. Am. Geoph. Univ. / The relation between magnitude and energy of earthquakes by Båth ((1955))
{'key': '2021091016432340100_BIB3', 'first-page': '1', 'article-title': 'The energies of seismic body waves and surface waves', 'volume-title': 'Contributions in Geophysics in Honor of Beno Gutenberg', 'author': 'Båth', 'year': '(1958)'} / Contributions in Geophysics in Honor of Beno Gutenberg / The energies of seismic body waves and surface waves by Båth ((1958))
10.1016/0079-1946(66)90003-6 / Physics and Chemistry of the Earth / Earthquake energy and magnitude by Båth ((1966))
{'key': '2021091016432340100_BIB5', 'first-page': '353', 'article-title': 'Earthquake volume, fault plane area, seismic energy, strain, deformation and related quantities', 'volume': '17', 'author': 'Båth', 'year': '(1964)', 'journal-title': 'Ann. Geofis.'} / Ann. Geofis. / Earthquake volume, fault plane area, seismic energy, strain, deformation and related quantities by Båth ((1964))
10.1144/GSL.JGS.1956.112.01-04.02 / Quart. J. Geol. Soc. London / The energy of earthquakes by Gutenberg ((1956))
10.1785/BSSA0470030221 / Bull. Seism. Soc. Am. / Effect of ground on earthquake motion by Gutenberg ((1957))
10.1785/BSSA0320030163 / Bull. Seism. Soc. Am. / Earthquake magnitude, intensity, energy and acceleration by Gutenberg ((1942))
10.1785/BSSA0460020105 / Bull. Seism. Soc. Am. / Earthquake magnitude, intensity, energy and acceleration (2nd paper) by Gutenberg ((1956))
{'key': '2021091016432340100_BIB10', 'first-page': '1', 'article-title': 'Magnitude and energy of earthquakes', 'volume': '9', 'author': 'Gutenberg', 'year': '(1956)', 'journal-title': 'Ann. Geofis.'} / Ann. Geofis. / Magnitude and energy of earthquakes by Gutenberg ((1956))
10.1785/BSSA05406A2067 / Bull. Seism. Soc. Am. / An application of the Haskell-Thomson method to the synthesis of the surface motion due to dilatational waves by Hannon ((1964))
10.1785/BSSA0560020605 / Bull. Seism. Soc. Am. / Simple digitizer for paper seismograms by Howell ((1966))
10.1785/BSSA0570040719 / Bull. Seism. Soc. Am. / Truncated crustal transfer functions and fine crustal structure determination by Leblanc ((1967))
10.1139/e67-071 / Can. J. Earth Sci. / Spectral study of short-period P waves by Leblanc ((1967))
Lundquist G. M. (1969). Frequency-Band and Integrated Magnitude using Long-Period Seismograms. M. S. Thesis, 65 pp, The Penna. State Univ.
10.1785/BSSA0250010001 / Bull. Seism. Soc. Am. / An instrumental earthquake magnitude scale by Richter ((1935))
{'key': '2021091016432340100_BIB17', 'volume-title': 'Elementary Seismology', 'author': 'Richter', 'year': '(1958)'} / Elementary Seismology by Richter ((1958))
Yiu S. K. (1968). A Measure of the Energy Flux Represented by a Seismogram. Ph. D. Thesis, Penna. State Univ.162 pp.

Dates

Type	When
Created	3 years, 11 months ago (Sept. 10, 2021, 12:43 p.m.)
Deposited	3 years, 11 months ago (Sept. 10, 2021, 12:43 p.m.)
Indexed	1 year, 7 months ago (Jan. 10, 2024, 7:38 a.m.)
Issued	55 years, 2 months ago (June 1, 1970)
Published	55 years, 2 months ago (June 1, 1970)
Published Online	55 years, 2 months ago (June 1, 1970)
Published Print	55 years, 2 months ago (June 1, 1970)

Funders 0

None

BibTeX

@article{Howell_1970, title={Integrated and frequency-band magnitude, two alternative measures of the size of an earthquake}, volume={60}, ISSN={0037-1106}, url={http://dx.doi.org/10.1785/bssa0600030917}, DOI={10.1785/bssa0600030917}, number={3}, journal={Bulletin of the Seismological Society of America}, publisher={Seismological Society of America (SSA)}, author={Howell, B. F. and Lundquist, G. M. and Yiu, S. K.}, year={1970}, month=jun, pages={917–937} }

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