kingwinner Posted October 16, 2005 Report Share Posted October 16, 2005 1) The following is a graph showing relationship between energy released (millions of tons of TNT equivalent) and Richter Magnitude:I was told that each unit increase of the Richter Magnitude is a 31-fold in energy released, but why in the above graph, it is not a 31-fold in energy released? 2) To determine the Richter Magnitude of an earthquake using a nomogram, you need to know the epicentral distance (from S-P lag time) and amplitude of the largest wave recorded by the seismograph. This looks sloppy to me, does it mean the amplitude of S wave or the amplitude of Surface Wave? The surface waves actually procduce the largest amplitude... Does anyone have any idea and would like to share? :) Quote Link to comment Share on other sites More sharing options...
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