Magnitude of an earthquake.
1 Its rankings are similar to the Richter or the moment magnitude scale for earthquakes.
2 That gets us the aptly named moment magnitude scale , which supplanted the Richter scale in popular use in the 1970s.
3 The first earthquake reported in Cape Town this weekend measured 2.5 on the same magnitude scale .
4 The earthquake registered a preliminary 2.5 on the local magnitude scale , as recorded by SA's Seismograph network.
5 Measuring at 2.3 on the local magnitude scale , the Sunday tremor was a relatively subdued seismic event.
6 A further 66 quakes reached a magnitude of 7.0-7.9 and 385 scored 6.0-6.9 on the Richter magnitude scale .
7 A modest fellow, he never referred to the scale by his own name, but always called it "the Magnitude Scale . " )
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