• Sign in to Neowin Faster!

    Create an account on Neowin to contribute and support the site.

Sign in to follow this  

Scientists: Quake may have made Earth wobble

Recommended Posts

ember    0

wtf?!?

Scientists: Quake may have made Earth wobble

LOS ANGELES, California (Reuters) -- The deadly Asian earthquake may have permanently accelerated the Earth's rotation -- shortening days by a fraction of a second -- and caused the planet to wobble on its axis, U.S. scientists said Tuesday.

Richard Gross, a geophysicist with NASA's Jet Propulsion Laboratory in California, theorized that a shift of mass toward the Earth's center during the quake Sunday caused the planet to spin 3 microseconds, or one millionth of a second, faster and to tilt about an inch on its axis.

When one huge tectonic plate beneath the Indian Ocean was forced below the edge of another "it had the effect of making the Earth more compact and spinning faster," Gross said.

Gross said changes predicted by his model probably are too minuscule to be detected by a global positioning satellite network that routinely measures changes in Earth's spin, but said the data may reveal a slight wobble.

The Earth's poles travel a circular path that normally varies by about 33 feet , so an added wobble of an inch is unlikely to cause long-term effects, he said.

"That continual motion is just used to changing," Gross said. "The rotation is not actually that precise. The Earth does slow down and change its rate of rotation."

When those tiny variations accumulate, planetary scientists must add a "leap second" to the end of a year, something that has not been done in many years, Gross said.

Scientists have long theorized that changes on the Earth's surface such as tide and groundwater shifts and weather could affect its spin but they have not had precise measurements to prove it, Caltech seismologist Hiroo Kanamori said.

"Even for a very large event, the effect is very small," Kanamori said. "It's very difficult to change the rotation rate substantially."

Source

Share this post


Link to post
Share on other sites
ozric    0

Well it was supposed to be the force of 1 million Hiroshima's, I don't see a bit of a Earth wobble as improbable when thinking of that amount of force.

But it does sort of remind you how fragile this planet is.

Share this post


Link to post
Share on other sites
Panacik    27

I kind of expected this. It wont be noticable though :)

Share this post


Link to post
Share on other sites
phedot    0

[sarcasm]So that's why I was going to bed so late...[/sarcasm] :\

I'm a little bit scared about all those earthquakes... At about 2 weeks there was one near Portugal coast (don't know the exact distance from the coast) and it reached a 5.5 in Richter Scale, then the Asian with 9 and today another near Portugal coast about 60 miles far...

Share this post


Link to post
Share on other sites
lardiop    1

Really scary thing is the fact that the Richter Scale is logarithmic. Meaning an earthquake of 9.0 is 10x greater than an 8.0, 100x greater than a 7.0, 1000x greater than a 6.0 etc.

The Asian 9.0 quake was stronger than all the measured earthquakes for the last 5 years put together.

Share this post


Link to post
Share on other sites
webeagle12    948

this is scary man, how much earthquakes like that is our earth can take before something very serious going to happen

Share this post


Link to post
Share on other sites
JK1150    0
this is scary man, how much earthquakes like that is our earth can take before something very serious going to happen

585192995[/snapback]

you act like these happen once a month. i really wouldn't worrk about the earth going off it's axis and heading to the sun or something like that because of this.

Share this post


Link to post
Share on other sites
kennyout    4

that sounds weird....

anyway....the thing is the quake/faults that that occured....pretty much is a cirular thing around the Ring of Fire(Volcanos) that are on the parameter of the Pacific....

thing is they are wondering if the San Andres Fault line will quake also due to this

Share this post


Link to post
Share on other sites
qdave    159
Really scary thing is the fact that the Richter Scale is logarithmic. Meaning an earthquake of 9.0 is 10x greater than an 8.0, 100x greater than a 7.0, 1000x greater than a 6.0 etc.

The Asian 9.0 quake was stronger than all the measured earthquakes for the last 5 years put together.

585192105[/snapback]

i never knew it was based on logs. scary to think about that.

Share this post


Link to post
Share on other sites
ozric    0
this is scary man, how much earthquakes like that is our earth can take before something very serious going to happen

585192995[/snapback]

Sorry, but I find that comment extremely stupid, something serious DID happen.

Do you mean before our planet is destroyed or a large amount of life or all life? When you consider the amount of dead and displaced aswell as the magnitude on a physical scale you should be a little more tactful of your context.

Share this post


Link to post
Share on other sites
XPGoD    0

They have just issued NEW Tsunami Warnings for people living 2 miles within the coastlines of the areas already hit Sunday...

Two 5.4 magnatude earthquakes hit within 2 hours of one another.

Sources

FOXNews

USGS real time Quake viewer Mind you those only show greater than 2.5 earthquakes worldwide.

Share this post


Link to post
Share on other sites
Rob2687    72

^wow...the number of quakes daily jumped after the 26th....

Share this post


Link to post
Share on other sites
Porssi    0

hmm... THIS wasn't on the news... it was quite feisty...

MAP 8.1 2004/12/23 14:59:04 -50.163 160.419 10.0 NORTH OF MACQUARIE ISLAND

Share this post


Link to post
Share on other sites
Rob2687    72
hmm... THIS wasn't on the news... it was quite feisty...

MAP 8.1  2004/12/23 14:59:04 -50.163  160.419  10.0  NORTH OF MACQUARIE ISLAND

585195694[/snapback]

Thats cause its in the middle of nowhere.

Share this post


Link to post
Share on other sites
Rob2687    72

Oh noes! t3h poor penguins :cry:

Share this post


Link to post
Share on other sites
nexx    0

The earths core has stopped spinning!

but seriously, the planet has dealt with earthquakles for millions of years. Something us humans may never be able to take control of.

Share this post


Link to post
Share on other sites
Porssi    0
Thats cause its in the middle of nowhere.

585195704[/snapback]

yeh, it is, but usually quakes of this magnitude make it to the news...

Share this post


Link to post
Share on other sites
Panacik    27

The earth will deal with the quakes in its own way. Weather or not it involves wiping out humanity in the process we cannot be sure. However if it happens then there is nothing we can do about it.

Prehaps we where only meant to live for a certain amount of time and now it is time to move along to let new inhabitants enter our world...

Share this post


Link to post
Share on other sites
#47    0
.....move along to let new inhabitants enter our world...

585196041[/snapback]

lol. Enter our world in which we've polluted, they're better off going to Mars. :laugh:

Share this post


Link to post
Share on other sites
kennyout    4
The earths core has stopped spinning!

but seriously, the planet has dealt with earthquakles for millions of years. Something us humans may never be able to take control of.

585195872[/snapback]

Thats right....damn nations trying to play god!!!

Nuke the core!!!:p

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.