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A moment magnitude scale
Journal of Geophysical Research Atmospheres · 1979 · Vol. 84(B5) · pp. 2348–2350
Thomas C. Hanks✉(United States Geological Survey)Hiroo Kanamori(California Institute of Technology)
Abstract
The nearly coincident forms of the relations between seismic moment M 0 and the magnitudes M L , M S , and M w imply a moment magnitude scale M = ⅔ log M 0 ‐ 10.7 which is uniformly valid for 3 ≲ M L ≲ 7, 5 ≲ M s ≲ 7½, and M w ≳ 7½.
High-pressure geophysics and materialsearthquake and tectonic studiesSeismic Waves and AnalysisMagnitude (astronomy)Richter magnitude scaleMoment (physics)Moment magnitude scaleScale (ratio)PhysicsSeismic momentGeologyMathematicsSeismology
Funding
- National Science Foundation
- California Institute of Technology
- U.S. Geological Survey
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3,923
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References
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Journal of Geophysical Research Atmospheres · 1977 · 2,430 citations
Theoretical basis of some empirical relations in seismology
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