Posted on 10/27/2009 8:12:33 AM PDT by mudblood
The New Theory: Earth’s magnetic field is not produced by an internal dynamo within the planet. The magnetic field and the planet are separate parts of a complex dynamo system surrounding the planet. The system includes the planet, the magnetic field, radiation belts, and ring current. The same is true of the other planets. Saturn, Jupiter, Neptune, and Uranus are visible components of otherwise invisible planetary dynamo systems, which are all housed within a magnetosphere. According to this new theory, there is no internal dynamo within the planet. Planet Earth does not have a unique way of producing it’s magnetic field. Nor do the other planets. Each magnetic field of each planet is produced in exactly the same way, by its planetary dynamo system.
(Excerpt) Read more at sites.google.com ...
I have always wondered how a molten metal core could have any magnetic field
seriesly- I wondered that...
Wow, sometimes these guys sound like they wake up throwing darts at theories.
ping for a read later
Not being a scientist, I can only guess as to what keeps our Earth’s magnetic field in balance but I suspect it is a number of different factors which include the relationship to the other planets, stars, our own Moon and the inner crust of our own Earth that provides that balance. I also believe that all these things were created by God and are kept in that state of balance by that Supreme Being even as these areas undergo constant changes and fluctuations that occur daily as well as over a long period of time.
I like that he’s actually challenging ‘accepted’ scientific views. We’ve seen what happens when people accept established science as the end of all further inquiry (global warming).
Exactly who is this guy, and what are his creds?
Oh, and a complete rebuttal of his theory is here:
http://focus.aps.org/story/v19/st3
The author has some learning to do about when to use “it’s” vs. when to use “its.”
Very close - we dream it.
this holds with the ancient legends that an near-orbit or near-miss object so affected earth’s magnetism that the magnetic poles were switched
some of the wildest ancient stories talk about the earth’s rotation even being reversed. Interesting to speculate
The magnetic poles switch about every 300,000 years. On either side of the mid atlanic ridge there are perfect bands of rock with opposite magnetic poles.
For his creds, I’m sure he has them at the site I linked. As for the rebuttal, I have yet to hear his response to it - but then again I didn’t read every page on the site either. I think he talks about planets that don’t have a molten core as well, and yet still have a magnetic field.
Did you use this comment in another thread within the last week? I read this a few days ago.
Mike
“the long-held view that it is created by the rotation of a liquid iron core”
That view was popular, but never did make any sense.
Not that I can remember.
so there is a cycle? based on what, do you think?
when is earth next due? seems I’ve read the magnetism is now weakening
Ping for later
True. While science has accumulated a vast amount of knowledge, even great theories like General Relativity are incomplete.
Mars and I believe Venus have almost non existent magnetic fields. In the case of venus its interesting due to the fact that we don’t understand what prevents the atmosphere of venus from being stripped away by the solar winds.
you wonder how a ball of iron the size of mars, spinning opposite to the Earth’s rotation at millions of miles per hour, could produce a magnetic field?
Anybody can have theories.
To paraphrase “Rocky Horror Picture Show”:
“I’ve got theories, you’ve got theories, we’ve all got theories!”
I’ll believe it when he produces a scientifically accurate dynamic physical model that predicts the periodical pole reversals.
There’s a definite cycle but you would have to ask a geologist for theories on what causes it. I believe the name of the ship that discovered the magnetic banding of the sea floor was called the Glomar Explorer.
As far as magnetic field weakening is concerned, it makes sense that as a molten core cooled, the magnetic field it produces would weaken.
Then you shouldn’t believe that the liquid core produces the Earth’s magnetic field, because scientists cannot predict pole reversals either, nor explain why. From National Geographic:
“We can see reversals in the rocks, but they don’t tell us how it happens,” said Gary Glatzmaier, an earth scientist and magnetic field expert at the University of California, Santa Cruz.
Also:
“Our planet’s magnetic field reverses about once every 200,000 years on average. However, the time between reversals is highly variable. The last time Earth’s magnetic field flipped was 780,000 years ago, according to the geologic record of Earth’s polarity. “
Glad to have you on-board with us Dynamo-ers!
So, can this guy demonstrate then the magnetic movements and reversals the Earth experiences? Magentic North moves about 0.1 degrees per year where I am at. The Sun isn’t moving that much. He would need to explain the interaction between the Sun and the Earth in order to prove his theory.
So, how did you and Mars come to that conclusion? he he
It might be interesting to look at basalt deposits, say on the Moon and Mars and see if they can be corellated to terrestrial shifts.
Although there seem no appreciable tectonics on these two bodies, basalts ex/intruded at different times could then be compared to events of similar age on Earth.
If the events are synchronous, maybe this guy’s onto something.
But I personally doubt it.
The sun itself presents some problems for the guy’s theory. The sun isn’t a solid mass and doesn’t rotate at the same rate all over its surface. This causes a chaotic magnetic field that you would expect to make earth’s magnetic field just as chaotic.
Please tell us how Nikolai Tesla powered his “electric” car back in 1931. No battery pack, just 12 vacuum tubes and two ferrite rods I ass-u-me were cores for low frequency inductors/coils of some kind.
Basically the huge eddy currents created as the core interacts with the mantle.
Very true. IT also would give the guy’s theory problems in that the particles from the Sun also are not as constant as the magnetic field of the Earth.
magnetic field bump
I suppose if you could take deep core samples from the slope of Olympus Mons we might be able to find out if there’s any banding there.
I think we should build giant super conducting magnets to supplement or decrement Earth’s magnetic field so we can control the temperature on the planet. Because the Magnetic field affects weather and climate much more than CO2 levels. Heck, building this system would probably cost 1/100th as much as Cap Trade.
Of course there is the possibility that HAARP already does something similar.
Amen!
Science is NEVER settled!!! A constant reevaluation and “but what about ...?” analysis is a very good and healthy thing.
OK, I’m calling BS on this one, just because of all the crazy rip off schemes in the adds with the article. Nice try.
He’s not being funded by anyone for his research. Its hard to research and work at Wendy’s at the same time. I can’t believe I’m defending making money on the FR.
There are advertisers, and then their are people who sell gold as an investment.
So why does Mars have no magnetic field to speak of??? If its simply a matter of being a planet spinning in space, its electromagnetic field should have collapsed in the pockets that it has today.
I’m not saying the theory is wrong, just asking, how it handles this counter example.
I can understand how a rotating iron core can cause a magnetic field. What I can’t understand is how this theory explains the periodic reversal of this magnetic field.
Hey, what the heck, Einstein worked at a patent office to pay the rent. Of course, not everyone who works at a patent office is Einstein...
I looked into that a little, using googly on the internet. Mars is stated as having a magnetic field, but weaker than Earth. But it is a smaller planet, in a different orbit, etc. Also, this isn’t my theory, it has to stand on its own two feet, I’m totally cool with that :)
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