The is a newer scale that measures the total energy released during an earthquake by determining the average amount of displacement on the fault, the area of the fault surface that slipped, and the strength of the faulted rock.

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The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion