Jump to content

  • Welcome!

    Register and log in easily with Twitter or Google accounts!

    Or simply create a new Huddle account. 

    Members receive fewer ads , access our dark theme, and the ability to join the discussion!

     

Do you ever feel like there isn't enough time in the day?

Jase

By Jase,
in Huddle Lounge

Recommended Posts

Jase Apprentice

Jase

Posted
Posted

Well tough luck.

http://news.yahoo.com/s/space/20100302/sc_space/chileearthquakemayhaveshorteneddaysonearth

The massive 8.8 earthquake that struck Chile may have changed the entire Earth's rotation and shortened the length of days on our planet, a NASA scientist said Monday.

The quake, the seventh strongest earthquake in recorded history, hit Chile Saturday and should have shortened the length of an Earth day by 1.26 milliseconds, according to research scientist Ricard Gross at NASA's Jet Propulsion Laboratory in Pasadena, Calif.

"Perhaps more impressive is how much the quake shifted Earth's axis," NASA officials said in a Monday update.

The computer model used by Gross and his colleagues to determine the effects of the Chile earthquake effect also found that it should have moved Earth's figure axis by about 3 inches (8 cm or 27 milliarcseconds).

The Earth's figure axis is not the same as its north-south axis, which it spins around once every day at a speed of about 1,000 mph (1,604 kph).

...

Link to comment
Share on other sites
Darth Biscuit Mentor

Darth Biscuit

Posted
Posted

I was reading about this at home last night... it's fascinating to me...

The 2004 Sumatran Earthquake...

JPL has modeled the coseismic effect on the Earth's rotation of the December 26 earthquake in Indonesia by using the PREM model for the elastic properties of the Earth and the Harvard centroid-moment tensor solution for the source properties of the earthquake. The result is:

change in length of day: -2.676 microseconds

polar motion excitation X : -0.670 milliarcseconds

polar motion excitation Y: 0.475 milliarcseconds

Since the length of the day can be measured with an accuracy of about 20 microseconds, this model predicts that the change in the length-of-day caused by the earthquake is much too small to be observed. And, since the location of the earthquake was near the equator, this model predicts that the change in polar motion excitation is also rather small, being about 0.82 milliarcsecond in amplitude. Such a small change in polar motion excitation will also be difficult to detect.

These near 9.0 magnitude earthquakes release a tremendous amount of energy...

The 8.8 Chilean Quake created waves in Lake Pontchartrain in Louisiana...

The 1964 Alaskan 9.1 quake sloshed water out of swimming pools in Florida and Puerto Rico.

The 2004 Sumatran quake produced measurable ground motion in Oklahoma, in the US.

It's really incredible.

Link to comment
Share on other sites
pstall Newbie

pstall

Posted
Posted

I don't know how accurate this can be. I mean it sounds neat and all.

Head Scientist at this site: Hey has anybody seen my car keys?

Other white coats: Did you lose them again?

Head guy: Yeah I know. Did you guys get a chance to see my discovery about shortened days due to that Chilay(the new way of saying Chile) earthquake? How freakin cool is that?

Heady guy: Hey has anybody seen my car keys?

Link to comment
Share on other sites
Darth Biscuit Mentor

Darth Biscuit

Posted
Posted

http://www.broowaha.com/articles/4851/the-big-one-californias-future-earthquake-probabilities

I remember studying about this back in 8th grade and being terrified of even visiting California.

That's got some interesting info... but they're talking about probabilities of a 6.7 or 7.5... and as bad as they could be, they would pale in comparison to an 8.8 in that region.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • PMH4OWPW7JD2TDGWZKTOYL2T3E.jpg

  • Topics

  • Posts

    • tukafan21
      We joke about how the NFL has a script for the season. But maybe it's not a joke?

      By tukafan21 · Posted

      lol, that second part is quite literally one of the dumbest things ever. Having or not having guaranteed contracts has absolutely nothing to do with how much these billionaires have to pay.  Because there is a hard cap and a minimum cap spend requirement, and teams either use their cap or roll it over to use it all the next year, so the owners have to pay the same amount of money in the end no matter what. Having fully guaranteed contracts in the NFL would only hurt salary cap management, and thus would end up screwing over the team and its fan base when teams kiss on signings as they take up cap room that is needed to improve the roster. Look at the Browns with Watson, they gave him the fully guaranteed deal and all it’s doing is sucking up massive cap space now.  If they hadn’t done that, the owner would still be paying the same amount of money each year as that cap space would still be used elsewhere. If you want to argue for fully guaranteed contracts because the players deserve it, that’s an entirely different argument and a fair one to discuss.  But anyone against fully guaranteed deals isn’t doing it to argue for the billionaire owners.
    • rayzor
      Our guys working their azz's off to be the winners they know they are!!

      By rayzor · Posted

      Start posting in threads in the other forums instead of just creating threads. No one comes over here so you aren't starting conversations.  Get your ass up to 100 posts. It's not that hard. Don't create 100 posts. Contribute to conversations. 
    • Rocky Davis
      NHL Draft 2025

      By Rocky Davis · Posted

      Ryabkin could be the steal of the draft, he was a Top 10 pick heading into last season and had a rough year.  Lots of GMs passed on him because of that and his workouts. Pick has really high upside and Svech should be able to translate Rod tearing his arse a new one for making dumb plays since Svech has had several years of it.  🤣😂
×
×
  • Create New...