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Full Version: IS THE CORE MELTING THE ICE CAPS?
Unexplained Mysteries Discussion Forums > Unexplained Mysteries > Ancient Mysteries & Alternative History
Blue_army
I think the core is melting the ice caps because i think the core will explode one day.
Roj47
Do you often write down or say whatever comes into your head?

I may be able to get away with volcanic activity, which is loosely connected to the core.
Captain Kolak
Okay, this is a pretty odd question. The core is cooling.... making is shrink. Not expand. So I dont know how it could melt it. Keep it simple. Our stupidity is melting the icecaps.
cladking
The heat from the Earth's core provides a relatively stable and unvarying
amount of heat to the surface of the planet. This heat is normally well above
the temperature at which water melts.

It's easier to think about the subject by factoring this out but in point of fact,
if a glacier is melting then much of the heat being absorbed is coming from
the Earth's core.

For practical purposes the change in glaciers is more dependent on ambient
air temperatures and such factors since changes in heat flow from the Earth's
core are extremely slow.

It really should be noted that this planet has but a single ice cap and there is
no evidence that it has shrunk significantly compared to a long term average.
The sea ice in the north has been dramatically reduced in recent years but
this is of little impact on the total amount of heat on the planet. It could have
an important impact because of changes induced in ocean currents or in the
reflection of summertime sunlight.
cladking
Of course heat flow is dependent on temperature and it usually only
flows up when the ground is colder than about 55 degrees. This can
be hugely variable in specific locations. Heat from the core would
have little impact on sea ice melting.
Moro
The most likely cause of oceans being heated is hot spots cycling in the earth's core. A very significant point of evidence is that recent ice ages have been cycling at 100 thousand year intervals. Environmental causes would not be so consistent. But convection in the earth's core could produce very precise repetitious cycles.

A lot of heat from the earth's core gets to the surface, as indicated by deep wells which produce warm water. Oceans are deeper than deep water wells. So the oceans are picking up a lot of heat from the earth's core. Any increase, and an ice age would surely be the result.



Over geologic time, the inner core grows as the whole Earth cools. Iron crystals freeze out at the top of the outer core and rain onto the inner core. At the base of the outer core, the iron freezes under pressure taking much of the nickel with it. The remaining liquid iron is lighter and rises. These rising and falling motions, interacting with geomagnetic forces, stir the whole outer core at a speed of 20 kilometers a year or so.




cladking
QUOTE(Dragonwick @ Jun 2 2007, 08:11 PM) [snapback]1706273[/snapback]
The most likely cause of oceans being heated is hot spots cycling in the earth's core. A very significant point of evidence is that recent ice ages have been cycling at 100 thousand year intervals. Environmental causes would not be so consistent. But convection in the earth's core could produce very precise repetitious cycles.


There is also some evidence of a perturbation in the Earth's orbit.

This could be a natural cycle as well driven by any number of core, surface, or orbital phenomena.


Moro
QUOTE(cladking @ Jun 2 2007, 09:17 PM) [snapback]1706278[/snapback]
There is also some evidence of a perturbation in the Earth's orbit.

This could be a natural cycle as well driven by any number of core, surface, or orbital phenomena.

Yes, I think as well that the earths rotation is/will be effected by the melting ice caps, have a look at this! Earth, you can see how tiny the mantle is compared to the radius. You could calc. the result of taking mass from the poles and adding it to the oceans. Even a ten meter rise at the equator is insignificant compared to the 6,370,000 meters of the earth's radius. And the average density of the earth is about 5.5kg/m^3 the core is 9.5 and the mantle is 2.8. But water, as you know, is only 1.
taking mass from the poles and adding it to the equator would tend to stabilise the spin. I'm not sure if it would have a long-term effect on the precession. However, if enough water moved from the poles, where it has little spin, to the equator, it would slow the Earth slightly.
cladking
QUOTE(Dragonwick @ Jun 2 2007, 08:24 PM) [snapback]1706287[/snapback]
Yes, I think as well that the earths rotation is/will be effected by the melting ice caps, have a look at this! Earth, you can see how tiny the mantle is compared to the radius. You could calc. the result of taking mass from the poles and adding it to the oceans. Even a ten meter rise at the equator is insignificant compared to the 6,370,000 meters of the earth's radius. And the average density of the earth is about 5.5kg/m^3 the core is 9.5 and the mantle is 2.8. But water, as you know, is only 1.
taking mass from the poles and adding it to the equator would tend to stabilise the spin. I'm not sure if it would have a long-term effect on the precession. However, if enough water moved from the poles, where it has little spin, to the equator, it would slow the Earth slightly.


Excellent point.

It would also change the shape a little but this should be of less importance.
Moro
QUOTE(cladking @ Jun 2 2007, 09:46 PM) [snapback]1706308[/snapback]
Excellent point.

It would also change the shape a little but this should be of less importance.

Yeah, The whole point is that in fact the core itself is not melting the ice caps, but a chain of events is the cause.

1. Oceans Heating: The evidence is clear that oceans are heating, not the atmosphere. Recent measurements clearly show this, as polar ice caps are melting when over water but increasing when over land.

2. Hot Spot Rotating: A hot spot rotating within the earth is the only apparent explanation. The cyclic nature of ice ages is consistent with a rotation within the earth, which would be cycle, but not environmental effects, which would be widely varying. No solar effects show proper correlations with 100,000 year cycles or heating patterns.

3. Broad Heating Pattern: The heating of the oceans is not a localized effect which could be attributed to ocean currents shifting, as both polar ice caps are melting, and both Pacific and Atlantic sides are affected. Such a broad base of heating points to a large mass moving deep within the earth. The rotation that is occurring near the outer crust of the earth has a much shorter cycle.

4. Orbital Plane Tilt: The Earth's orbital plane tilt follows a 100,000 year cycle. This correlation with ice age cycles is too much of a coincidence to be accidental. Muller and MacDonald reported on this in Science in 1997 (Link), but their theory was aligned upon supposed atmospheric heating, which is a faulty assumption originating with propaganda. Instead, the orbital tilt cycle can explain why a hot spot rotates within the Earth.

When the Earth's orbital plane tilts, both gravitational and inertial effects could cause the Earth's core to shift, if it is more dense than the fluid around it, which it probably is. It should also be hotter than the fluid around it, because 4.5 billion years of cooling should create a temperature gradient.

This means that shifting of the Earth's core would cause one side of the earth to get hotter, and one side to get cooler. If the hotter side is covered by an ocean, then that ocean gets hotter. Ocean currents would spread the heat to all oceans.

The biggest question with this theory is why have the cycles only occurred during the past million years. Possible explanations are these: Perhaps the cool-down of the earth only recently created enough differential temperature between the Earth's core and it's surrounding fluid. Perhaps the heat-up occurred on land in earlier times, which would not result in an ice age. Perhaps other factors over-rid this effect in earlier times, since earlier ice ages had much larger cycles. Perhaps a near miss by an asteroid or comet shifted the plane of the Earth's orbit one million years ago.

Edit: forgot a link.
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