Chile Earthquake Moved Entire City 10 Feet to the West

[The Straight Story]

Chile Earthquake Moved Entire City 10 Feet to the West

The magnitude 8.8 quake that struck near Maule, Chile, Feb. 27 moved the entire city of Concepcion 10 feet to the west.

Precise GPS measurements from before and after the earthquake, the fifth largest ever recorded by seismographs, show that the country’s capital, Santiago, moved 11 inches west. Even Buenos Aires, nearly 800 miles from the epicenter, shifted an inch. The image above uses red arrows to represent the relative direction and magnitude of the ground movement in the vicinity of the quake.

The analysis comes from a project led by Ohio State earth scientist Mike Bevis that has been using GPS to record movements of the crust on Chile since 1993. The area is of particular interest to geoscientists because it is an active subduction zone, where an oceanic plate is colliding with a continental plate and being pushed into the Earth’s molten mantle below.

The world’s largest recorded earthquakes since 1900 have all occurred in subduction zones, including the largest quake ever recorded, which was a magnitude 9.5 in 1960 in Chile not too far from February’s earthquake. The second largest was a 9.2 in Alaska in 1964, and the third was the magnitude 9.1 Sumatra quake of 2004 that created the tsunami that killed more than 200,000 people. The fourth largest quake was a magnitude 9 on Russia’s Kamchatka peninsula.

http://www.wired.com/wiredscience/2010/03/chile-earthquake-moved-entire-city-10-feet-to-the-west/

[damntexdem]

1. Hey, Chile just increased in size.

If, for example, it were by an average of 5 feet over 1000 miles, then the country would have added one square mile to its territory.

[BrklynLiberal]

2. Now we know what happened to Atlantis!!!

[malaise]

3. Wow

That was some shaking.

[Dogmudgeon]

4. Sounds like "The Time Warp" from RHPS

"It's just a jump to the left ... "

--d!

[HughMoran]

5. Wow, that's some interesting stuff

10ft! Holy crap!

[slampoet]

6. This article contradicts itself in the first two Sentences. WTF.

[Cronus Protagonist]

7. So, at least SOMETHING is moving to the left!

n/t