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octoberlib

(14,971 posts)
Fri Jul 18, 2014, 06:13 PM Jul 2014

Earthquake Maps Reveal Higher Risks for Much of U.S.

New government maps extend hazard zones in eastern, central, and western U.S


Look out, South Carolina, Illinois, and Missouri. Although California is well known for earthquakes, new federal government maps extend the high-risk zones for temblors across much more of the country.

On Thursday, the United States Geological Survey (USGS) announced updated U.S. National Seismic Hazard Maps, which reflect the most current scientific views on where future earthquakes will occur, how often they will occur, and how hard the ground will shake.

Since the agency's previous maps were released in 2008, "the general patterns of earthquakes across the U.S. have not changed significantly, but lots of the details have changed," says Mark Petersen, who leads the USGS's mapping efforts from Denver as chief of the National Seismic Hazard Project.


The 16 states at highest risk of quakes are Alaska, Arkansas, California, Hawaii, Idaho, Illinois, Kentucky, Missouri, Montana, Nevada, Oregon, South Carolina, Tennessee, Utah, Washington, and Wyoming.





http://news.nationalgeographic.com/news/2014/07/140717-usgs-earthquake-maps-disaster-risk-science/

11 replies = new reply since forum marked as read
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Earthquake Maps Reveal Higher Risks for Much of U.S. (Original Post) octoberlib Jul 2014 OP
West Coast rocks! antiquie Jul 2014 #1
and rolls awoke_in_2003 Jul 2014 #7
I live in central Illinois and we've had several tremors caused by the New Madrid Fault Louisiana1976 Jul 2014 #2
Well, there's something good to be said about Kansas. (nt) Control-Z Jul 2014 #3
I'd like to see... NeoGreen Jul 2014 #4
Alaska rocks in more ways than one! raven mad Jul 2014 #5
I hadn't realized the Knoxville area was so much at risk starroute Jul 2014 #6
If the New Madrid fault lets loose, say goodbye to Memphis, St. Louis, and catbyte Jul 2014 #8
What the Frack? Roy Serohz Jul 2014 #9
, blkmusclmachine Jul 2014 #10
Post removed Post removed Dec 2014 #11

NeoGreen

(4,031 posts)
4. I'd like to see...
Fri Jul 18, 2014, 06:39 PM
Jul 2014

... a comparison map of before and after Fracking (i.e. before and after 2003?) and see what geographical areas are highlighted... Oklahoma?... anyone?

starroute

(12,977 posts)
6. I hadn't realized the Knoxville area was so much at risk
Fri Jul 18, 2014, 08:34 PM
Jul 2014

New Madrid is well known, and there was a major earthquake in Charleston in 1886. But Knoxville? Apparently so -- and making it worse is that there are no earthquake building codes in the eastern US, so those areas are completely unprepared.

http://www.wate.com/story/20076108/ut-scientist-says-east-tennessee-could-one-day-see-75-magnitude-earthquake

Hatcher said East Tennessee has the second most active seismic zone in the Eastern United States, but that normally the earthquakes in East Tennessee are smaller, keeping damage to a minimum.

That may not always be the case.

Hatcher said evidence shows there has been a 7.0 magnitude earthquake in the area, but the large earthquake happened hundreds of years ago.

"The people who figure probability on earthquakes for the U.S. Geological Survey say this area could produce a magnitude 7.5," he said.

catbyte

(34,392 posts)
8. If the New Madrid fault lets loose, say goodbye to Memphis, St. Louis, and
Fri Jul 18, 2014, 09:45 PM
Jul 2014

Chicago will sustain heavy damage. Scary thought.

Response to octoberlib (Original post)

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