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The Richter scale [1] (/ ˈ r ɪ k t ər /), 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". [3]
Magnitude is an estimate of the relative "size" or strength of an earthquake, and thus its potential for causing ground-shaking. It is "approximately related to the released seismic energy". [1] Intensity refers to the strength or force of shaking at a given location, and can be related to the peak ground velocity.
Where an earthquake is not recorded on seismographs an isoseismal map showing the intensities felt at different areas can be used to estimate the location and magnitude of the quake. [1] Such maps are also useful for estimating the shaking intensity, and thereby the likely level of damage, to be expected from a future earthquake of similar ...
In most cases there is an initial report within 10 to 30 minutes of all magnitude 5.0+ earthquakes globally, and magnitude 4.0+ earthquakes within the contiguous U.S. Note that the magnitudes and locations in the initial reports are only first-order approximations, which get revised in the following hours, days, and months.
[[Category:Earthquake templates]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:Earthquake templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.
An average of five earthquakes with magnitudes between 3.0 and 4.0 occur per year in the greater Los Angeles area, according to a recent three-year data sample. The earthquake occurred at a depth ...
The earthquake, which didn't cause a tsunami and which the U.S. Geological Survey initially reported as magnitude 6.3, was centered on Mauna Loa's southern flank at a depth of 23 miles (37 ...
Jakarta (Reuters) -A magnitude 6.4 earthquake struck off the Indonesian island of Java on Friday evening, injuring at least 10 people, while one person died of suspected heart attack during the ...