The Richter and Moment Magnitude scales are logarithmic. Each increase of one magnitude releases about 32 times more energy. From magnitude 6.0 to 8.0 is a two-step increase, so the energy released is 32 × 32 = 1,024 times more. ...
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The elastic rebound theory was propounded by H.F. Reid in 1910. He developed this concept after studying the 1906 San Francisco earthquake. By analyzing land surveys before and after the quake, he observed that the ground had deformed elastically over ...