Answer: The intensity of an earthquake is measured by the Mercalli scale.
This scale was modified by the Harry O. Now, the Mercalli scale is also known as the Modified Mercalli scale. With the use of this scale, Isoseismal curves can be drawn to summarize such data for an earthquake. Isoseismals would be circles with the epicentre, if there were complete symmetry about the vertical through the earthquake’s focus.
The scale has twelve levels based on which the degree of the earthquake is described. The twelve scale levels are Not Felt, Weak, Light, Moderate, Strong, Very Strong, Severe, Violent and the next three levels are Extreme.
Which Device is used to Measure the Intensity of an Earthquake?
The mercalli scale is used to measure the intensity of an Earthquake. The intensity of an earthquake depends upon several factors like the depth of the hypocenter, terrain, and distance from the epicenter.