PDA

View Full Version : Earthquake Changes Earth



Doc E
03-13-2011, 02:13 PM
Since the quake, Japan is 8' closer to the USA and the earth's axis has shifted 10 cm.



.

huntinman
03-13-2011, 02:16 PM
Hopefully it didn't move Roger any closer to TN...Nice and conservative here:cool:

BrianW
03-13-2011, 02:28 PM
http://www.scientificamerican.com/blog/post.cfm?id=how-the-earthquake-in-chile-changed-2010-03-02
How the earthquake in Chile could change Earth's axis

By Katherine Harmon (http://www.scientificamerican.com/blog/observations/index.cfm?author=1822) | Mar 2, 2010 06:30 PM |
The magnitude 8.8 earthquake (http://www.scientificamerican.com/report.cfm?id=earthquake-guide) that jolted Chile on Saturday was felt as far away as São Paulo. But NASA scientists are proposing that its repercussions are truly global in a geophysical sense: it likely shifted Earth's axis (http://article.cfm/?id=earths-tilt-spawns-rise-a) by about eight centimeters.

Interesting! i wonder if the Japan shift is a "e-collar correction" ;) to the jolt in the Southern Hemisphere just about a year ago (? hmmm) or a further tilt off axis of the prior shift? .

ducknwork
03-13-2011, 07:51 PM
I want to know how in the world they measure that.:confused:

Doc E
03-13-2011, 08:29 PM
I want to know how in the world they measure that.:confused:

Laser
To measure the varying distances from the Earth to the Moon, a 1" diameter laser beam is shot to the moon, it is reflected back and after that voyage of nearly a half million miles, the laser that returns is not even 2". The distance measured is correct within 1/10 of an inch.
Laser is coherant light.



.

zeus3925
03-14-2011, 08:13 AM
Laser
To measure the varying distances from the Earth to the Moon, a 1" diameter laser beam is shot to the moon, it is reflected back and after that voyage of nearly a half million miles, the laser that returns is not even 2". The distance measured is correct within 1/10 of an inch.
Laser is coherant light.



.

Did they use your avatar?:D