Earthquake Magnitude Scale | Michigan Technological University
www.mtu.edu › geo › earthquake-measure
Magnitude scales can be used to describe earthquakes so small that they are expressed in negative numbers. The scale also has no upper limit.
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Earthquake Magnitude, Energy Release, and Shaking Intensity
www.usgs.gov › earthquake-hazards › ea...
Earthquake magnitude, energy release, and shaking intensity are all related measurements of an earthquake that are often confused with one another.
Richter magnitudes edit ; 4.0–4.9, Light, IV to V ; 5.0–5.9, Moderate, VI to VII ; 6.0–6.9, Strong, VII to IX ; 7.0–7.9, Major, VIII or higher ...