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Lists, Maps, and Statistics at United States Geological Survey (USGS) Earthquake history of the United States through 1970 at USGS; Earthquake Data and Information at National Centers for Environmental Information (NCEI) Thomas Fuller; Anjali Singhvi; Mika Gröndahl; Derek Watkins (June 4, 2019). "Buildings Can Be Designed to Withstand Earthquakes.
Historical earthquakes is a list of significant earthquakes known to have occurred prior to the early 20th century. As the events listed here occurred before routine instrumental recordings — later followed by discoveries of Earth's tectonic plates, [1] seismotomography imaging technique, [2] observations using space satellites from outer space, [3] artificial intelligence (AI)-based ...
Pages in category "Lists of earthquakes in the United States" The following 14 pages are in this category, out of 14 total. This list may not reflect recent changes .
The 1975 Morris earthquake occurred in western Minnesota on July 9 at 14:54:15 UTC, or 9:54 a.m. local time. [2] The strongest instrumentally recorded rupture in the history of the state, it registered at magnitude 4.6 M n and had a maximum Mercalli intensity of VI (Strong).
An undated photo from the US Geological Survey depicts a landslide trench and ridge in the Chickasaw Bluffs, east of Reelfoot Lake, Tennessee, resulting from the 1811 to 1812 New Madrid earthquakes.
From the first seismograms, as seen in the figure, it was noticed that the trace was divided into two major portions. The first seismic wave to arrive was the P wave, followed closely by the S wave. Knowing the relative 'velocities of propagation', it was a simple matter to calculate the distance of the earthquake. [4]
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The cartography of the United States is the history of surveying and creation of maps of the United States. Maps of the New World had been produced since the 16th century. The history of cartography of the United States begins in the 18th century, after the declared independence of the original Thirteen Colonies on July 4, 1776, during the ...