Earthquake intensity is measured using the Modified Mercalli Scale. The scale indicates the perceived damage from an earthquake. These parameters are subjective: they depend on the conditions of buildings and the opinions of witnesses. To make the scale more objective, the US Geological Survey also use measurements of ground accelerations to measure earthquake intensity.
Earthquake magnitude is measured using the Richter magnitude scale and is widely reported as a measurement of earthquake strength (derived from the peak amplitude of the seismic wave from an earthquake as measured on a seismometer), but it has largely been replaced by the moment magnitude scale (derived based on the elastic moduli of the crust where the earthquake occurred, the length of the slip surface and the cross sectional area of the slip surface) which estimates the total energy released in an earthquake.
Charles Richter developed the Richter scale in collaboration with Beno Gutenberg. This scale is used to measure the magnitude of seismic events, such as earthquakes. It is logarithmic and allows for comparison of the energy released by different earthquakes.
The magnitude of earthquakes typically ranges from <0 (microearthquakes) to >9 (great earthquakes). The most commonly used scale to measure earthquake magnitude is the Richter Scale or the moment magnitude scale.
Scientists normally use something called the Richter scale to measure earthquakes. They measure in maginitude. 1 on the Richter scale would be small vibrations through the earthquake zone where as 10 would be total destruction. Hope that's helped!
The Richter scale measures the magnitude of an earthquake, which is the amount of energy released at the source. It does not measure the intensity or effects of the earthquake at different locations. It is commonly used to compare the size of earthquakes.
The Richter scale was originally developed to measure the strength or magnitude of moderate earthquakes (magnitudes less than 7). The surface wave magnitude scale was then developed by Richter and Guttenburg to allow larger earthquake magnitudes to be measured (up to 8). To measure large earthquakes the moment magnitude scale must be used. To measure the severity of earthquakes, the Modified Mercalli intensity scale is used in the US and the Macroseismic scale is used in Europe.
Charles Richter
The name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes is Charles F. Richter. The scale is called the Richter scale and measures the energy released by an earthquake at its source.
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Richter scale
The Richter scale
You can measure earthquakes on the Moment magnitude scale or the Richter scale
the rictor scale
magnitude
An earthquakes intensity
Developed in 1935 by Charles Richter in collaboration with Beno Gutenberg
the rictor scale
The standard units used to measure the magnitude of earthquakes are the Richter scale and the moment magnitude scale.