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What am I celebrating ?

April 26, 2016

richter Moment Magnitude Chart

 

richterToday is Richter Scale Day when we commemorate the birth of Charles Richter.  In 1935, the seismologists Charles Francis Richter and Beno Gutenberg, of the California Institute of Technology, developed the (future) Richter magnitude scale, specifically for measuring earthquakes in a given area of study in California, as recorded and measured with the Wood-Anderson torsion seismograph. Richter derived his earthquake-magnitude scale from the apparent magnitude scale used to measure the brightness of stars.

Richter’s scale (which has been replaced by the Moment Magnitude Scale) measures the magnitude of an earthquake.  The magnitude value is proportional to the logarithm of the amplitude of the strongest wave during an earthquake.

This very cool video explains magnitude . . .

Adapted from Wikipedia

 

 

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2 comments

  1. When my daughter was in the 6th grade we made a Ricter scale.


    • Tee hee – was it an earth-shaking experience?



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