Physics — Earthquake Magnitude
The logarithmic Richter and moment-magnitude scales.
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M = \log_{10}\frac{A}{A_0}
\text{each unit} = 10\times \text{amplitude}
E \propto 10^{1.5M}
\text{moment magnitude } M_w
The logarithmic Richter and moment-magnitude scales.
M = \log_{10}\frac{A}{A_0}
\text{each unit} = 10\times \text{amplitude}
E \propto 10^{1.5M}
\text{moment magnitude } M_w