1011+Worst+Earthquakes+in+United+States+History

Worst Earthquakes in United States History
Earthquakes in United States can be threatening .Especially if your in one. Earthquakes happen all over the United States, and some people don't notice, or just don't care! These are the three topics. San Francisco, Alaska, and New Madrid. media type="custom" key="9080990"

The Great San Francisco Earthquake
On April 18, 1906 5:15 AM a earthquake destro yed a town[1].That earthquake set a fire that destroyed the rest[1].The fire ravaged for three whole days[2].225,000 were left homeless, and the death toll was/is uncertain[1].It only lasted only a minute, but caused a huge amount of damage[2].Modern Richter scales estimates that it was the magnitude of 8.25[2].That's big.1989 the Richter scale regersterd it as 6.7[2].The fire ravaged for three whole days[2].Fire caught to the Winsor hotel and three men were on the roof, and it was impossible to get them down[2].There was $350,000,000 worth of damage[2].

The Alaskan Earthquake
At 5:36 PM March 27 1964 an earthquake occurred in Prince William Sound Region of Alaska**[3].**The magnitude was 9.2[3].The earthquake destruction area covered 130,000 square kilometers[3]. The earthquake lasted 4 minutes, but caused many landslides and avalanches[3].300-400 million dollars worth of destuction was there (1964 dollars)[3]. This earthquake occurred on Good Friday[4]. Out of the Alaskan earthquake 1964, San Francisco earthquake 1906, and the New Madrid earthquake 1811-1812 Alaska was the biggest. San Francisco was the second biggest, and New-Madrid was the third. The located epicenter was near Prince William Sound[4].the fault was a seduction zone (thrust fault)[4].



The New Madrid Earthquake
The earthquake of New Madrid were between 1811 December16 and 1812 April[5].The fault line extends from [|Marked Tree (Poinsett County)] 150 miles northeastern [5]. The epicenter was three miles beneath [|Blytheville (Mississippi County)][5].The only town with a sizeable population was New Madrid[5].Just after dawn, around 7:15 A.M, another one hit the town.



References

 * 1) Frantz, Chris. "The Great San Francisco." //http://www.infoplease.com/spot/sanfran1906earthquake.html//. Web. 25 Mar. 2011
 * 2) The San Francisco Earthquake,1906." //http://www.eyewitnesstohistory.com/sfeq.htm//. Web. 5 Apr. 2011.
 * 3) "The Great Alaska Earthquake In 1964." //http://www.aeic.alaska.edu/quakes/Alaska_1964_earthquake.html//. Alaska Earthquake Information Center, Web. 25 Mar. 2011.
 * 4) Mealer, tom. "ALASKA ." //http://www.vibrationdata.com/earthquakes/alaska.htm//. Web. 6 Apr. 2011.
 * 5) New Madrid Earthquakes of 1811-1812." //http://www.encyclopediaofarkansas.net/encyclopedia/entry-detail.aspx?entryID=2218//. The Encyclopedia of Arkansas History & Culture, Web. 5 Apr. 2011.