![]() For example, a 5.5 is a moderate earthquake and a 6.5 is a strong earthquake. The physical size of an earthquake is measured in magnitude. Why size and soil type matter with earthquakes | CNN These examples illustrate how locations (and depth) magnitudes intensity and fault (and fracture) properties are dependent and related. The earthquake epicenter is shown as a star and the geocoded intensities are shown as small colored squares. Did you feel it? map for the M6.0 Napa California earthquake on August 24, 2014. (Courtesy Incorporated Research Institutes for Seismology IRIS.) Intensity. Earthquake sizes and energy release and comparison with other natural and man-made events. (Public domain.) The intensity and magnitude of an earthquake can be determined from the data recorded by seismometers. › programs › earthquake hazards Earthquake Magnitude Energy Release and Shaking Intensity › programs › earthquake hazards CachedMagnitude. Modified Mercalli Intensity Scale TopĮarthquake Magnitude Energy release and shaking intensity Learn more about how we measure earthquake magnitude. Magnitude scales can be used to describe earthquakes so small that they are expressed in negative numbers.
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