Slashdot Mirror


The Earth is Getting Fatter

murk1e writes "The BBC News service has an article which reveals that the Earth is getting fatter. It is well known that the Earth is slightly wider at the equator than at the poles, it is less well known that for years, the Earth has been becoming more spherical. Now it appears that the trend has reversed, and the Earth is getting more obese (in the sense of shape change rather than changing mass). Perhaps the Earth should sue?"

43 comments

  1. Re:an effect of modern "civilization?" by ThereIsNoSporkNeo · · Score: 1

    That was a remarkable leap to a conclusion.

    First you hypothesized that humans may be the cause of the mm change in the earth's size. Then you advocated the destruction of the human race for the good of the Universe.

    Is it just me, or is that not a logical next step?

    --
    With my dying breath, I curse Zoidberg!
  2. Re:an effect of modern "civilization?" by DonFinch · · Score: 1

    Yes maybe it will, Why do you kill yourself first and spark a grassroots movement!

    --
    -- Insert wisdom here:
  3. Re:an effect of modern "civilization?" by 3waygeek · · Score: 2
  4. Re:an effect of modern "civilization?" by R.Caley · · Score: 1

    Clearly it is the result of use of so many artifical fertilizer. If we overfeed the earth it naturally gets fat!

    --
    _O_
    .|<
    The named which can be named is not the true named
  5. If it lives under a bridge... by Kibo · · Score: 1
    and smells like billy goats....

    That said, I have it on good authority he's the guy who wrote the screen play for The Core
    When something happens to cause the core of the planet to change in temperature, threatening to stop the planet from revolving, a band of NASA "terranauts" (led by a geophysics professor played by Eckhart) is formed to pilot an experimental deep-earth ship to try to fix it by setting off a nuclear detonation. (Swank plays the ship's pilot; Karyo plays a Russian "high-energy" weapons specialist; Woodard plays a NASA control chief)
    It's only missing Kathy Ireland, or someone else equally interchangable, and midgets, preferably australian.
    --
    --Jimmy has fancy plans; and pants to match.
    1. Re:If it lives under a bridge... by ThereIsNoSporkNeo · · Score: 2, Funny

      Or maybe, just maybe, the studio -itself- is causing the change in the earth's shape, just to generate publicity for the upcoming movie. (Which I have never heard of)

      There are Australian midgets?!? That'll revolutionize the humor industry! Just think Crocodile Mini-Dundee. On second thought, let's not.

      --
      With my dying breath, I curse Zoidberg!
    2. Re:If it lives under a bridge... by ShavenYak · · Score: 2

      There are Australian midgets?!? That'll revolutionize the humor industry!

      I have this mental image of a 3'2" version of Steve Irwin chasing a small lizard through the outback saying "Crikey, look at the size of 'im!"

      --

      Hey kids, there's only 5 days left 'til Yak Shaving Day!
  6. Maybe.... by Icehouseman · · Score: 1

    It might be responsibile for the global warming. I mean since the earth is getting bigger; it means it's getting closer to the sun in a way; so perhaps that's why the Earth is warming up.

    1. Re:Maybe.... by Jerf · · Score: 2

      It might be responsibile for the global warming. I mean since the earth is getting bigger; it means it's getting closer to the sun in a way; so perhaps that's why the Earth is warming up.

      MILLIMETERS ? I hope you aren't seriously considering that possibility. Our orbit with the sun varies annually by thousands of miles, as it's not a perfect circle. Millimeters won't matter much.

    2. Re:Maybe.... by Anonymous Coward · · Score: 0

      And maybe it's elves getting angry at the way they're portrayed in the Rudolph the Red-Nosed Reindeer Christmas specials. Were you asleep in Earth Science (or equivalent) class when they explained the seasons to you?
      Distance from sun matters relativley little, it's how direct the solar radiation is against the planet's surface. To quote, "... winter begins in the northern hemisphere at about the time that the Earth is nearest the Sun" ( source ). Obviously, if the purported difference in size were a significant factor, there'd be no snow in Minneapolis in the winter.

    3. Re:Maybe.... by Neillparatzo · · Score: 2, Funny

      Reminds me of a tour guide in West Virginia who advised us to wear extra sunscreen because we'd be "awfully close to the sun" at the top of the ski slope.

      I'd make up some quip about that level of intelligence being par for WV, but then again, I was the one visiting a ski slope during the summer.

    4. Re:Maybe.... by Icehouseman · · Score: 1

      Was I asleep, probably. Did I care? No, not really. It was just an idea I had, at any rate, I'm not a scientist.

    5. Re:Maybe.... by Anonymous Coward · · Score: 0

      wow, how condescending of you
      you really should get out more often, however, because saying "you'll be getting close to the sun" is a commonly used phrase meaning "you'll be exposed to a lot of sunlight." if you're hiking up a ski slope, in summer, or in winter, it's always a good idea to wear sunscreen, because there can be very little shade once you get above a certain point.

    6. Re:Maybe.... by Anonymous Coward · · Score: 0

      Well no how about the earth is slowing down in it's rotation and that is causing warming because the same spot is under the direct impact of the sun longer take a balloon and turn it over a bunsun burner and if you can do it fast enough and hold it far enough it won't pop then slow the balloon down and POP! So much for global warming being our fault.

      I have a friend that should have some data on this he has a satilite up that is measuring the amount that space/time is being warped by the earths gravatational field.... Dave Merriweather is his name if anyone else here knows him.

      there is something else to consider as well and that is that we are over due for a pole shift that would mean that the north pole would become the west pole well we now believe that when this happens the poles don't move "the Earth DOES!" yes it would flip on it's side and hence the reason that they found frozen mastadons with tropical flowers in thier mouths! ofcourse here in the US we would probably experience a wind of say 1000mph it's a life ending event gang and there is nothing that we can do about it! :(

      Xanadu

  7. Re:an effect of modern "civilization?" by tsa · · Score: 2, Interesting

    If you look at films of liquid 'bubbles' in spaceships you'll see that they make the same movements, only faster and more extreme. I think it's just a natural phenomenon

    --

    -- Cheers!

  8. We are at the farthest distance from the sun now? by Anonymous Coward · · Score: 1, Insightful

    Feeling any cooler?

  9. Re:an effect of modern "civilization?" by Anonymous Coward · · Score: 0

    Um the earth is over 10 billion years old or something. Last time I checked it's changed size about 14.8 MILLION times in that period. Just another case of humans wishing they mattered.

  10. basic law? by Nomad128 · · Score: 1

    An interesting "violation" of the 2nd law of thermodynamics....since the only other natural phenomenon to have done this, afaik, is life itself, one can only assume that this is an effect of life on Earth, barring some other wierd cause.

    1. Re:basic law? by gerf · · Score: 1

      "An interesting "violation" of the 2nd law of thermodynamics....since the only other natural phenomenon to have done this, afaik, is life itself, one can only assume that this is an effect of life on Earth, barring some other wierd cause."

      so, you think that only life can affect what happens to earth? So, there must be life on the moon Io, if it has activity? The Great Red Spot must be created by life, since it's a change? I'm sorry, but blaming Mankind and for any change this planet goes through is just ignorant. Are you from Kentucky or West Virgina by any chance?

    2. Re:basic law? by Nomad128 · · Score: 1

      Close- Illinois. I didn't mean to be "blaming" anyone for anything...I suppose my wording is such, though...Anyway, what I meant by "violation" is that life started relatively simple and became incredibly complex. This is prob. an idea that someone has fit into existing theories adequately, though?

  11. It just goes to show .... by one9nine · · Score: 2, Funny

    it is less well known that for years, the Earth has been becoming more spherical. Now it appears that the trend has reversed, and the Earth is getting more obese

    ... that yo-yo dieting just doesn't work. Eat less and exercise.

  12. Hmmm, a sphere that is wider at the center by Anonymous Coward · · Score: 1, Funny

    "It is well known that the Earth is slightly wider at the equator than at the poles"

    Now isn't that strange. A sphere that has a smaller radius at the top than the center.

    Maybe we can make an equation for that....Hmmm

    COS X

  13. Re:an effect of modern "civilization?" by Jerf · · Score: 3, Insightful

    How long before we finally go to far, and the Earth dissolves entirely?

    Oh good lord. You can't "dissolve" a planet, no matter how much sci-fi you watch. You must input enough energy into it to overcome gravity, which no amount of drilling will do.

    Please get a clue; I mean this not as an insult, but that I really, really wish there were more environmentally concerned people with a clue. If more environmentalists were fighting rationally, maybe they'd make some progress, instead of worrying about stupid things and then making stupid decisions.

  14. Re:an effect of modern "civilization?" by Anonymous Coward · · Score: 0

    Any amount of mass we have removed from the crust of the earth is insignificant next to the amount that exists. Also, our removal is primarily from shallow deposits of materials that don't do much in the way of structural support anyway.

  15. Measuring small changes by nucal · · Score: 2
    This was also covered in the Philadelphia Inquirer. In the article, they go into a little more detail about measuring the Earth's diameter. Sounds like they are taking advantage of some sort of Doppler shift:

    That doesn't change much - just a few millimeters - from year to year. Tiny as that sounds, satellite tracking allows scientists to make extremely precise measurements of the planet's shape.

    Changes in the shape influence the strength of the Earth's gravitational pull from place to place, said Benjamin Chao of NASA-Goddard. Those gravitational changes in turn influence the positions of satellites.

    And that's something they can measure to within centimeters. "We shoot laser beams to the satellites," he said. The time it takes for the laser light to bounce off reflective surfaces and back to the ground tells them precisely how far their satellites are, said Chao, who collaborated in the findings. He and Cox put the satellite positions into a computer, he said. That's how they got their surprise finding.

    1. Re:Measuring small changes by Peter+T+Ermit · · Score: 3, Informative

      That doesn't sound like Doppler-based measurement. It's simple laser ranging, though you've got to take the Doppler effect into account because of the relative motion of the Earth and the satellite.

  16. Probably just a normal oscillation by Jerf · · Score: 3, Interesting

    This is probably just a normal oscillation the Earth undergoes, driven by the impetus of the various gravitational influences it experiences over time. If we waited around long enough, it would probably start going back.

    In fact, just thinking about it, it's virtually inconceivable that it wouldn't oscillate this way. Consider the Earth as a giant drop of water cruising through space. (Note that on a plantary scale, everything is liquid, which is why the surface is smooth. If the Earth were the size of a cue ball, it would be the smoothest cue ball ever made. This is also why blowing up a planet and seeing huge chunks fly away is stupid; it's basically a liquid, it should 'blow up' like one.) Of course it oscillates, what with Saturn and Jupiter and innumerable other influences constantly 'twanging' it.

    The only real question is what the period is.

    Note that it is utterly inconceivable that humanity has had any significant effect on this process simply by moving mass around. Do a compution on the total mass we've ever moved around, at all. Be generous; go ahead and assume 2002-level industrial output for 10,000 years of human history, which will be an overestimate by about a factor of 5,000. Now divide by the mass of the Earth. Then remember to use your brain when thinking about human effects in the future. (Some things we can and do affect negatively. There are other things we could literally not hope to effect in a million years. Moving a significant fraction of the planet is one of those. Recall the planet is a huge sphere of which "the surface" is itself only a tiny, tiny fraction...)

  17. Flatter! Not Fatter by pcs305 · · Score: 2, Funny

    They made a typo. The earth is getting FLATTER. http://www.alaska.net/~clund/e_djublonskopf/Flatea rthsociety.htm

  18. link to original NASA press release about this by dolsen · · Score: 2, Interesting
    to repeat... the following is a link to the original NASA press release. It also includes two rather pointless images that highlight the direction of the "bulge" pre-1997 and post-1997. if you like the globe in the images there's a better one on the same web site called the Blue Marble

    and don't forget to check out the Natural Hazards

    --
    .:: proud supporter of dc united ::.
  19. This is in no way a violation of the second law. by Peter+T+Ermit · · Score: 3, Insightful
    Momentum's conserved, mass is conserved, energy is conserved -- nothing unusual is happening here. It's just the sloshing of the matter in an object. There's no violation of physics here.

    Life isn't a violation of the second law, either. Put energy into a system, and you can reduce entropy locally. The only things that violate the second law are perpetual motion machines. (Small statistical glitches, like those reported last week, aren't violations either, as the second law is statistical.)

  20. Re:an effect of modern "civilization?" by quantaman · · Score: 3, Insightful

    Ummmmmm. Did you consider that is is perhaps just due to slow ossilations triggered by the rotation and its orbit (it isn't exactly in a stationary system)? Frankly I cannot imagine how we could of possibly caused something like this, I mean do you realize just how trivial we and our actions are compared to the ENTIRE PLANET!! Also consider that when drilling for oil they put water and steam back into the ground to fill up the gap (other wise we would be seeing a lot of lawsuits when oil wells started collapsing). We have NOTHING to do with the effects/evils of mankind it is just yet another natural phenomenon I don't understand. Besides I don't see a few millimeters here and there translating into the Earth dissolving in a few hundred years:) In fact looking back was your post just a fairly subtle joke on environmental extremists?

    --
    I stole this Sig
  21. Re:an effect of modern "civilization?" by MadAhab · · Score: 2, Funny

    NO NO NO, he's right, it is us. To save our planet, we must all move to the poles to keep the earth from tipping over. Start running for the nearest pole!

    --
    Expanding a vast wasteland since 1996.
  22. Re:an effect of modern "civilization?" by Anonymous Coward · · Score: 0

    the earth is 4.5 billion years old

  23. Clarification by Anonymous Coward · · Score: 0

    My understanding of this is that it is not the solid earth's physical shape that is geting flatter. It is the gravitational field. Previously, both the gravitational field and the solid earth were getting more spherical due to rebounding of the crust and mantle after the last ice age. Essentially, the load of glacial ice was removed from the polar regions, and the ground below was able to relax. The finding being reported here is that the graviational field has now stopped getting rounder and is getting flatter again. This is in spite of the fact that polar post-glacial rebound is continuing. So, some other mechanism is suspected. The researchers working on this think it is due to very large scale (in distance and time) oscillations in ocean currents that is moving mass (of ocean) from high to low latitudes.

    http://www.cnn.com/2002/TECH/space/08/01/earth.p um pkin/index.html

  24. Jees man.... stop being so melodramatic by Anonymous Coward · · Score: 0

    Seriously.. I was reading through this and I was thinking.. "This is some seriously melodramatic poetic crap.. sorta like that tps12 guy".. then I looked up..

    Really guy.. your getting a name for yourself at this point. What do you do.. and how did you get such an early post on this thing? Did you start writing poetry on the subject in the hopes that an article would get posted?

  25. I know... by nomel · · Score: 1

    I think the crappy satelites are just slowly falling to the earth...it would make scense because the gravitational field is increasing.

  26. following america? by Cyno01 · · Score: 1

    as usual the rest of the world is becoming americanized

    --
    "Sic Semper Tyrannosaurus Rex."
  27. Re:This is in no way a violation of the second law by Nomad128 · · Score: 1

    But how is that energy being "put into" the said system?

    (I'm no physicist, and will freely admit to having a less-than-perfect understanding of all this, so I question as much to learn as anything.)

    I guess what I'm getting at is that, for life to have started simply and become complex, something would have had to "put energy into" life. But how can nature put energy into life when life is already, perhaps, of a higher energy state than is the rest of nature?

  28. Re:This is in no way a violation of the second law by Anonymous Coward · · Score: 1, Informative

    The Earth is not a closed system, we receive most of our energy from the Sun, and a lot of energy is radiated off of our planet, as well.

    Variations of entropy locally on Earth are not significant by comparison.

  29. Re:an effect of modern "civilization?" by Anonymous Coward · · Score: 0

    These guys are more convincing.

  30. Our energy comes from... by Peter+T+Ermit · · Score: 2
    *drum roll*

    The sun.

    But how can nature put energy into life when life is already, perhaps, of a higher energy state than is the rest of nature?

    You shouldn't bandy about terms like "energy state" -- they have precise meanings. Anyhow, "nature" isn't giving our planet energy; the sun is. It is very hot and bright, and spits out lots of photons, some of which hit the Earth. Organisms, directly or indirectly, use that energy to do work and to reduce entropy locally. No violation of physical laws.

    And it's no problem to have order arise out of chaos so long as there's energy available to use... and even if there isn't, order can arise spontaneously in small systems out of disorder, thanks to the statistical nature of the second law.

  31. Re:an effect of modern "civilization?" by Bush+Pig · · Score: 0

    Actually, I'm pretty sure the water and steam has nothing to do with preventing collapse of empty oil reservoirs (the stuff sits in porous rock like sandstone after all), and everything to do with pushing the last possible drop of oil out into the light.

    --
    What a long, strange trip it's been.