Thomas C. Hanks, Hiroo Kanamori
Abstract
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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.
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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.
Key concepts: Magnitude (astronomy), Richter magnitude scale, Moment (physics), Moment magnitude scale, Scale (ratio), Physics, Seismic moment, Geology