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# Proof plate tectonics is flawed?

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posted on Jun, 25 2011 @ 11:25 PM
Ok.. I was watching Megaquake japan when I came to a stunning realization.
In the episode it says that during the 9.0 quake in japan.. The earth was shifted 10 inches and it's rotation was slightly sped up thus shortening our day by a fraction of a second. This is when bells started ringing in my head.. If the no outside force was acting upon the earth how can it speed up it's rotation without violating the laws of conservation? I look forward to your responses.

posted on Jun, 25 2011 @ 11:50 PM
As I'm weak on the conservation of energy, if not an outside force then what, an inside force? An expanding core?
edit on 25-6-2011 by TerryMcGuire because: Typo

posted on Jun, 25 2011 @ 11:55 PM

The change in rotation is not caused by any force. It's caused by a redistribution of mass at the surface of the earth, which, due to the conservation of angular momentum, causes the earth's rotation to be affected. In effect, the same thing happens when a skater is spinning and outstretches their arms - their spinning slows down.

posted on Jun, 25 2011 @ 11:59 PM
I was already to debate you on this but you went to a place I cannot follow

I know geology but not so much in this area so I look forward to what people have to say on this.

Great question

posted on Jun, 25 2011 @ 11:59 PM

Originally posted by CLPrime

The change in rotation is not caused by any force. It's caused by a redistribution of mass at the surface of the earth, which, due to the conservation of angular momentum, causes the earth's rotation to be affected. In effect, the same thing happens when a skater is spinning and outstretches their arms - their spinning slows down.

So what your saying is that the earth got slightly smaller around?

posted on Jun, 26 2011 @ 12:02 AM

Originally posted by TerryMcGuire
As I'm weak on the conservation of energy, if not an outside force then what, an inside force? An expanding core?
edit on 25-6-2011 by TerryMcGuire because: Typo

This is my question to haha if no outside force (ex another planets gravity or something) is acting upon the earth.. Where did it get it's energy to speed up

Hopefully this clears things up

posted on Jun, 26 2011 @ 12:05 AM

Originally posted by CLPrime

The change in rotation is not caused by any force. It's caused by a redistribution of mass at the surface of the earth, which, due to the conservation of angular momentum, causes the earth's rotation to be affected. In effect, the same thing happens when a skater is spinning and outstretches their arms - their spinning slows down.

was just gonna post this, but beat me to it ... this explanation is right on.

posted on Jun, 26 2011 @ 12:06 AM

Essentially, yes. The earthquake occurred on a megathrust (subduction) zone, which, when the redistribution of mass at the surface of the Earth is is all taken into account, led to an ever-so-slightly smaller amount of mass distribution near the equator. Since we typically measure the size of the Earth by its equatorial circumference, you could say the Earth got smaller. Mass didn't get lost anywhere, though, it just got redistributed.
edit on 26-6-2011 by CLPrime because: changed 'towards' to 'near'... it's clearer

posted on Jun, 26 2011 @ 12:10 AM

Originally posted by mb2591
Ok.. I was watching Megaquake japan when I came to a stunning realization.
In the episode it says that during the 9.0 quake in japan.. The earth was shifted 10 inches and it's rotation was slightly sped up thus shortening our day by a fraction of a second. This is when bells started ringing in my head.. If the no outside force was acting upon the earth how can it speed up it's rotation without violating the laws of conservation? I look forward to your responses.

Okay: what happens when a spinning ice skater pulls her arms in? he/she speeds up( no additional force required).(Its all about"conservation of energy").
edit on 26-6-2011 by 46ACE because: (no reason given)

posted on Jun, 26 2011 @ 12:10 AM

Originally posted by CLPrime

Essentially, yes. The earthquake occurred on a megathrust (subduction) zone, which, when the redistribution of mass at the surface of the Earth is is all taken into account, led to an ever-so-slightly smaller amount of mass distribution towards the equator. Since we typically measure the size of the Earth by its equatorial circumference, you could say the Earth got smaller. Mass didn't get lost anywhere, though, it just got redistributed.

Right ok.. So that would mean it got slightly denser aswell?

posted on Jun, 26 2011 @ 12:13 AM
So if the earth has bulges and mass isn't evenly distributed. Then is it right to say earth has a new wobble to it? Also, where would the mass be at now and what would be the effects, if any?

posted on Jun, 26 2011 @ 12:17 AM
Yes, that area got slightly denser, in a way.

No part of the planet is smooth or evenly spaced.

posted on Jun, 26 2011 @ 12:17 AM

Not necessarily. It's also possible that mass was simply pulled away from the equator... in which case, the volume of the Earth didn't decrease, its shape just changed a little bit.
In the skater analogy, they pull their arms in to their body to speed up - which would correspond to a decrease in the Earth's volume. But, it's also possible that the skater lifts their outstretched arms up over their head. In this case, mass has still been moved away from the "equator", so the spinning still speeds up, but nothing has been "brought in", so the overall volume stays the same.

But, then, it's also possible that the volume did decrease...negligibly. Increasing the Earth's density by a ridiculously minuscule amount.

Or, the volume of the Earth might even have increased, slightly decreasing the density. So long as mass is moved away from the equator, the effect is the same.

posted on Jun, 26 2011 @ 12:19 AM

Yup.

Easy way to demonstrate this is to sit on an office chair and start spinning with arms and legs out, then pull them into your body, you will spin faster.

posted on Jun, 26 2011 @ 12:20 AM

That would be responsible for this part:

The earth was shifted 10 inches

That's an additional axial tilt, also caused by the redistribution of mass.

posted on Jun, 26 2011 @ 12:27 AM

Originally posted by CLPrime

Not necessarily. It's also possible that mass was simply pulled away from the equator... in which case, the volume of the Earth didn't decrease, its shape just changed a little bit.
In the skater analogy, they pull their arms in to their body to speed up - which would correspond to a decrease in the Earth's volume. But, it's also possible that the skater lifts their outstretched arms up over their head. In this case, mass has still been moved away from the "equator", so the spinning still speeds up, but nothing has been "brought in", so the overall volume stays the same.

But, then, it's also possible that the volume did decrease...negligibly. Increasing the Earth's density by a ridiculously minuscule amount.

Or, the volume of the Earth might even have increased, slightly decreasing the density. So long as mass is moved away from the equator, the effect is the same.

Ah thanks for clearing that up
Ok in this quake a plate rose 24 feet.. Do you know how the earth shifted around to cause this? (did somewhere sink 24 feet or what)

posted on Jun, 26 2011 @ 12:38 AM

Are all forces , out there? Are there no forces in here?
If not, oh well. If so then what?

posted on Jun, 26 2011 @ 12:43 AM

I'm not sure where a plate rose 24 ft, but here's what happened...

The Pacific Plate slides under the Honshu (Japanese) Plate, and friction causes the Honshu Plate to get dragged down with it. At some point, however, the stress on the Honshu plate becomes too great, and it gives way, releasing, in this case, energy equivalent to 9.32 million Megatons. This was pretty much energy built-up through the friction between the two plates. The release of the Honshu Plate did not require any sort of 'Newton's 3rd Law' reaction.

Sorry if this isn't what you're talking about... the only "rise" in the plate that I know to have occurred was due to the release of the Honshu Plate - which, of course, is what caused the tsunami.
edit on 26-6-2011 by CLPrime because: (no reason given)

posted on Jun, 26 2011 @ 12:48 AM

Or, the volume of the Earth might even have increased, slightly decreasing the density. So long as mass is moved away from the equator, the effect is the same.

And how might this be?

posted on Jun, 26 2011 @ 12:51 AM

Originally posted by TerryMcGuire

Are all forces , out there? Are there no forces in here?
If not, oh well. If so then what?

Are you high?

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