Revision as of 23:06, 26 April 2023 edit P37307 (talk \| contribs) Extended confirmed users 1,988 edits →‎Details: added commons image ← Previous edit		Revision as of 03:11, 12 May 2023 edit undo 126.208.9.30 (talk) →‎Richter magnitudes Tag: Visual edit Next edit →
Line 28: :<math display="block">M_\mathrm{L} = \log_{10} A - \log_{10} A_\mathrm{0}(\delta) = \log_{10} [A / A_\mathrm{0}(\delta)],\ </math> where {{mvar\|A}} is the maximum excursion of the ~~Wood–Anderson~~[[Wood-Anderson seismograph]], the empirical function {{mvar\|A<sub>0</sub>}} depends only on the [[epicentral distance]] of the station, <math>\delta</math>. In practice, readings from all observing stations are averaged after adjustment with station-specific corrections to obtain the {{M\|L}} value.<ref name="Ellsworth" /> Because of the logarithmic basis of the scale, each whole number increase in magnitude represents a tenfold increase in measured amplitude; in terms of energy, each whole number increase corresponds to an increase of about 31.6 times the amount of energy released, and each increase of 0.2 corresponds to approximately a doubling of the energy released.

Richter scale: Difference between revisions