GEOLOGY

Detailed explanation-1: -Richter scale (ML), quantitative measure of an earthquake’s magnitude (size), devised in 1935 by American seismologists Charles F. Richter and Beno Gutenberg. The earthquake’s magnitude is determined using the logarithm of the amplitude (height) of the largest seismic wave calibrated to a scale by a seismograph .

Detailed explanation-2: -The Richter magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included for the variation in the distance between the various seismographs and the epicenter of the earthquakes. Sources/Usage: Public Domain.

Detailed explanation-3: -Earthquake magnitude is a measure of the “size, ” or amplitude, of the seismic waves generated by an earthquake source and recorded by seismographs.

Detailed explanation-4: -The amplitude is measured from the seismogram, as is the time difference between the arrival of the P-and S-waves. A line connecting the two values on the graph gives the magnitude of the earthquakes.