|
More evidence that the world is going to come to an end
|
View this Thread in Original format
| metalgearsolid |
| quote: | Earth's Core Spinning Faster Than Crust By RANDOLPH E. SCHMID,
WASHINGTON - The giant iron ball at the center of the Earth appears to be spinning a bit faster than the rest of the planet.
The solid core that measures about 1,500 miles in diameter is spinning about one-quarter to one-half degree faster, per year, than the rest of the world, scientists from Columbia University's Lamont-Doherty Earth Observatory and the University of Illinois at Urbana-Champaign report in Friday's issue of the journal Science.
The spin of the Earth's core is an important part of the dynamo that created the planet's magnetic field, and researcher Xiaodong Song said he believes magnetic interaction is responsible for the different rates of spin.
The faster spin of the core was proposed in 1996 by two of the current study's authors, Paul Richards of Lamont-Doherty and Song, now an associate professor at Illinois.
The researchers studied the travel times of earthquake waves through the Earth, analyzing what are called couplets. Those are earthquakes that originate within a half-mile or so of one another but at different times.
They analyzed 30 quakes occurring in the South Atlantic and measured at 58 seismic stations in Alaska and found differences in the travel times and shape of the waves, indicating differences in the core as the waves passed through the center of the Earth.
Analyzing those differences, they calculated that the core is spinning slightly faster than the rest of the planet and is a bit lumpy.
That solid inner core is surrounded by a fluid outer core about 4,200 miles across.
Since the planet is divided into 360 degrees of longitude, a core spinning one-quarter to one-half degree faster than the outer surface could take between 700 and 1,400 years to get one full revolution ahead.
But Song said in a telephone interview that he expected that rate to vary over time and sometimes the core might be spinning slower than the rest of the planet.
"What we see right now is a snapshot of a long time process between the magnetic field and the inner core," he said. "I do expect to see this rate change with time."
"What is surprising for us is that we could actually see it in such a short time scale," he said, noting the measurements had been made over less than a decade.
Geologists are used to thinking in terms of thousands or millions of years for geological processes, he said.
The work was funded by the U.S. National Science Foundation and the Natural Science Foundation of China. |
___
http://news.yahoo.com/s/ap/20050825/ap_on_sc/earthspin |
|
|
| MarathonMan |
| Woah! Thats some interesting ! :eyespop: |
|
|
| Zombie0729 |
| yeah, they didn't state whether it would effect anything. after reading the article about christian insight on gravity i'm thinking magnetism is bunch of B.S. too |
|
|
| Yan |
| Since it affects our magnetic field, the Mayans were right. :nervous: |
|
|
| D-res |
so is it gonna be like the movie "the core" or what
am i to assume this whole 'z0mg 2012 AAaahh' thing is going to happen |
|
|
| Akridrot |
I can't wait for this world to end! Bring it on! BRING IT ON!!!
:D |
|
|
| infinity HiGH |
more evidence?
i think it's pretty obvious that the world will end sooner or later. |
|
|
| |cEbLu3 |
| will this have any efeect on me when i'm rolling?? :p :tongue2 |
|
|
| metalgearsolid |
| You never know you know you might lose gravity or some like that. |
|
|
| OrZonE |
| quote: | Originally posted by metalgearsolid
You never know you know you might lose gravity or some like that. |
Because of magnetic fields? :conf: |
|
|
| jonSun |
| Dont worry the way more technologically aliens that live among us wont let the world end. |
|
|
|
|
