Which earthquake severity scale measures the amplitude of deflection of a seismograph pen,standardized to an idealized distance of 100 km between epicenter and seismograph?
A)Richter scale
B)Mercalli scale
C)seismic-moment magnitude scale

Question

Quizplus · Accepted Answer

The Richter scale measures the amplitude of deflection of a seismograph pen, standardized to an idealized distance of 100 km between epicenter and seismograph. This scale is logarithmic, meaning that each whole number increase in magnitude represents a ten-fold increase in amplitude and a 32-fold increase in energy released.

Which Earthquake Severity Scale Measures the Amplitude of Deflection of a Seismograph