Geophysics Seismology: sources and statistics Concept
Moment magnitude scale
Summary
The moment magnitude scale measures the size of an earthquake by a logarithm of its seismic moment. It was introduced by Hanks and Kanamori in 1979 and is now the standard scale for medium and large earthquakes. Unlike older scales read from wave amplitudes, it does not saturate for very large earthquakes. Its constants were chosen so that it roughly agrees with the older magnitude scales where those work well.
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| Tag | 8QWGDVEH46 |
|---|---|
| URI | m2://8QWGDVEH46 |
| Kind | concept |
| Writing | W0 stub |
| MSC | 86A15 |
| Same as | |
| Changed | 3 November 2026 |
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