LATEST EARTHQUAKES

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Presentation transcript:

LATEST EARTHQUAKES

EARTHQUAKES IN THE USA Earthquakes are one of the most costly natural hazards faced by the Nation, A significant risk to 75 million Americans in 39 States pdf

EARTHQUAKES IN THE USA The largest recorded earthquake in the United States was a magnitude 9.2 that struck Prince William Sound, Alaska on Good Friday, March 28, 1964 Alaska is the most earthquake-prone state and one of the most seismically active regions in the world. Alaska experiences a magnitude 7 earthquake almost every year, and a magnitude 8 or greater earthquake on average every 14 years

Florida and North Dakota have the smallest number of earthquakes in the United States Each year the southern California area has about 10,000 earthquakes. Most of them are so small that they are not felt. Only several hundred are greater than magnitude 3.0, and only about are greater than magnitude 4.0.

TODAY IN EQ HISTORY ng/today/year.php

Deaths in the United States from Earthquakes es/

EARTHQUAKES IN ILLINOIS The historical record of earthquakes having epicenters in Illinois begins on January 8, Since then there has been an EQ each year The largest ever recorded occurred on November 9, 1968, and measured magnitude 5.4 on the Richter scale. The last damaging earthquake in Illinois occurred on June 10, 1987, near Olney in southeast Illinois. This quake measured 5.0 on the Richter scale

Seismic Hazard Map

Map Earthquakes In Illinois e-hazards/pdf-files/earthquakes-thru-08.pdf e-hazards/pdf-files/earthquakes-thru-08.pdf

ILLINOIS EQ HISTORY nois/history.php nois/history.php

Stronger EQ happen outside IL but still have an impact The New Madrid Seismic Zone

New Madrid Earthquakes , December 16, Northeast Arkansas Magnitude ~ , January 23, New Madrid, Missouri Magnitude ~ , February 7, New Madrid, Missouri Magnitude ~ /events/ php /events/ php

POST THE FOLLOWING WEBSITES e-hazards/earthquake-haz.shtml e-hazards/earthquake-haz.shtml es/ es/

ANY QUESTIONS?

EQ’s in IL 1909 Aurora, Illinois: Magnitude 5.1, Intensity VII 1968 Southern Illinois: Magnitude 5.4, Intensity VII 1987 Near Olney, Illinois: Magnitude 5.1

EQ’s in IL 2004 June 28: Magnitude /uskgad/ 2006 January 2: Magnitude /ushkav/ 2008 April 18: Magnitude /us2008qza6/ /us2008qza6/