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The Great 1906 San Francisco Earthquake Archived February 11, 2017, at the Wayback Machine – United States Geological Survey The 1906 Earthquake and Fire – National Archives Before and After the Great Earthquake and Fire: Early Films of San Francisco, 1897–1916 – American Memory at the Library of Congress
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]
According to seismologist Charles Richter, the 1906 San Francisco earthquake moved the United States Government into acknowledging the problem. Prior to that, no agency was specifically focused on researching earthquake activity.
A section of San Francisco, looking east across Grant Avenue toward Yerba Buena Island, shows the ravages of the great earthquake that struck Wednesday, April 18, 1906.
As the energy of a wave is proportional to A 1.5, where A denotes the amplitude, each unit of magnitude represents a 10 1.5 ≈ 32-fold increase in the seismic energy (strength) of an earthquake. [13] Second, Richter arbitrarily defined the zero point of the scale to be where an earthquake at a distance of 100 km makes a maximum horizontal ...
United States, San Pablo Bay, California: 7.7: 10.0: XI The 1906 San Francisco earthquake was the worst in California's history. The death toll was between 700 and 3,000. The subsequent fire resulted in much of the destruction and death toll. 28,188 homes were destroyed. $400 million in damage costs were reported.
1906 San Francisco earthquake: August 17, 1906: Alaska 8.4 M w 0 1906 Aleutian Islands earthquake: September 27, 1909: Indiana: 5.1 M fa 0: 1909 Wabash River earthquake: June 23, 1915: California 6.2 M: 6 1915 Imperial Valley earthquakes: October 3, 1915: Nevada: 6.8 M w 0: 1915 Pleasant Valley earthquake: April 21, 1918: California 6.8 M: 0 ...
Charles Francis Richter (/ ˈ r ɪ k t ər /; April 26, 1900 – September 30, 1985) was an American seismologist and physicist.He is the namesake and one of the creators of the Richter scale, which, until the development of the moment magnitude scale in 1979, was widely used to quantify the size of earthquakes.