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  1. scienceexchange.caltech.edu › earthquakes-measuredHow Are Earthquakes Measured? - Caltech Science Exchange

    Magnitude measures the size of an earthquake as an event in the earth, while intensity measures the strength of the shaking at a location. Learn how scientists calculate magnitude using seismograms and fault data, and how they measure intensity using instruments and observations.

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  3. www.britannica.com › science › earthquake-geologyEarthquake - Magnitude, Intensity, Effects | Britannica

    2 days ago · Intensity depends, however, in a complicated way not only on ground accelerations but also on the periods and other features of seismic waves, the distance of the measuring point from the source, and the local geologic structure.

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  5. en.wikipedia.org › wiki › Richter_scaleRichter scale - Wikipedia

    The Richter scale[1] (/ ˈrɪktər /), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it the "magnitude scale ...

  6. www.usgs.gov › faqs › how-are-earthquakes-recordedHow are earthquakes recorded? How are earthquakes measured ...

    Intensity is a measure of the shaking and damage caused by the earthquake; this value changes from location to location. Learn more: Earthquake Magnitude, Energy Release, and Shaking Intensity

  7. www.usgs.gov › programs › earthquake-hazardsEarthquake Magnitude, Energy Release, and Shaking Intensity

    Magnitude is the size of the earthquake. An earthquake has a single magnitude. The shaking that it causes has many values that vary from place to place based on distance, type of surface material, and other factors. See the Intensity section below for more details on shaking intensity measurements. Types of Magnitudes

  8. www.usgs.gov › faqs › what-difference-betweenWhat is the difference between earthquake magnitude and ...

    Intensity scales, like the Modified Mercalli Scale and the Rossi-Forel scale, measure the amount of shaking at a particular location. An earthquake causes many different intensities of shaking in the area of the epicenter where it occurs.

  9. www.britannica.com › science › Richter-scaleRichter scale | Seismology, Earthquake Magnitude & Intensity

    Aug 14, 2024 · Richter scale, widely used quantitative measure of an earthquake’s magnitude (size), devised in 1935 by American seismologists Charles F. Richter and Beno Gutenberg. Magnitude is determined using the logarithm of the amplitude (height) of the largest seismic wave calibrated to a scale by a seismograph.

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