homepage Welcome to WebmasterWorld Guest from 23.22.173.58
register, free tools, login, search, pro membership, help, library, announcements, recent posts, open posts,
Become a Pro Member

Home / Forums Index / Local / Foo
Forum Library, Charter, Moderators: incrediBILL & lawman

Foo Forum

    
earthquakes can make days shorter
best excuse for why I miss my deadlines :)
LifeinAsia

WebmasterWorld Administrator lifeinasia us a WebmasterWorld Top Contributor of All Time 5+ Year Member



 
Msg#: 4090140 posted 6:00 pm on Mar 2, 2010 (gmt 0)

[cnn.com...]

 

mack

WebmasterWorld Administrator mack us a WebmasterWorld Top Contributor of All Time 10+ Year Member



 
Msg#: 4090140 posted 6:14 pm on Mar 2, 2010 (gmt 0)

I am realy going to miss that millionth of a seconds sleep each night. :)

Mack.

pageoneresults

WebmasterWorld Senior Member pageoneresults us a WebmasterWorld Top Contributor of All Time 10+ Year Member



 
Msg#: 4090140 posted 6:28 pm on Mar 2, 2010 (gmt 0)

He determined that the quake should have moved the Earth's figure axis about 3 inches (8 centimeters). The figure axis is one around which the Earth's mass is balanced. That shift in axis is what may have shortened days.


3 inches, yikes! Isn't there something in the books about the axis reversing themselves? Ah yes, they refer to it as Polar Reversal. Scary stuff.

I watch too much NatGeo! ;)

grandpa

WebmasterWorld Senior Member 10+ Year Member



 
Msg#: 4090140 posted 7:03 pm on Mar 2, 2010 (gmt 0)

I'm curious as to where the tipping point might occur. At what point does the axis shift and then keep on going until it can find a place to settle down?

The same article (see above) also mentioned the Three Gorges reservoir in China. Filled, it will hold 10 trillion gallons of water, enough to take off another millisecond or two.

...millionth of a seconds sleep each night.

I need a nap. If this keeps up I may need 2.

KenB

WebmasterWorld Senior Member 10+ Year Member



 
Msg#: 4090140 posted 7:08 pm on Mar 2, 2010 (gmt 0)

Grandpa, you slightly misread the article, the Three Gorges Reservoir will add to the length of our days, not subtract once it is full.

grandpa

WebmasterWorld Senior Member 10+ Year Member



 
Msg#: 4090140 posted 7:11 pm on Mar 2, 2010 (gmt 0)

In all seriousness, I wonder how this will affect systems that require critical timing. Some communications systems, weapons systems, and probably others all depend on timing that is usually controlled by an atomic clock. In the communications systems I used to maintain the timing was provided by a cesium beam clock, and all the clocks in the system had to be in sync. So where milliseconds don't really matter to most people, they are critical in some cases.

lawman

WebmasterWorld Administrator lawman us a WebmasterWorld Top Contributor of All Time 10+ Year Member



 
Msg#: 4090140 posted 7:18 pm on Mar 2, 2010 (gmt 0)


Over the course of a year, the length of a day normally changes gradually by one millisecond. It increases in the winter, when the Earth rotates more slowly, and decreases in the summer, Gross has said in the past.


[news.yahoo.com...]

Since winter happens only in one one hemisphere at a time, how does that work?

KenB

WebmasterWorld Senior Member 10+ Year Member



 
Msg#: 4090140 posted 8:28 pm on Mar 2, 2010 (gmt 0)

@Grandpa,

This isn't the first time such things have happened. Every now and then those responsible for defining the accurate time will throw in a leap second or leap millisecond if it becomes necessary.

@Lawman,

This is because there is more landmass in the northern hemisphere and there are higher mountains in the northern hemisphere. Thus snow pack build up would be heavier during northern winters than southern winters.

kaled

WebmasterWorld Senior Member kaled us a WebmasterWorld Top Contributor of All Time 10+ Year Member



 
Msg#: 4090140 posted 8:29 pm on Mar 2, 2010 (gmt 0)

I would hope that all navigational systems, etc. can cope without difficulty...

I believe the Earth's rotation is gradually getting slower anyway. For instance, I seem to recall that many millions of years ago a year was more than four hundred days long (because days were shorter). I always assumed this was due to the energy loss caused by Earth/Moon/Tide interaction but I've never seen this written down anywhere.

Incidentally, the "polar flip" refers only to the magnetic core and is not expected again for quite some time. When it does happen though, protection from solar radiation will weaken during the transition so things could get pretty nasty.

Kaled.

Global Options:
 top home search open messages active posts  
 

Home / Forums Index / Local / Foo
rss feed

All trademarks and copyrights held by respective owners. Member comments are owned by the poster.
Home ¦ Free Tools ¦ Terms of Service ¦ Privacy Policy ¦ Report Problem ¦ About ¦ Library ¦ Newsletter
WebmasterWorld is a Developer Shed Community owned by Jim Boykin.
© Webmaster World 1996-2014 all rights reserved