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Originally posted by TheBorg
Again, I need to reiterate that ice is LIGHTER than liquid water!! The absence of Ice will only increase the weight on the ground beneath where it was.
To put this all into perspective, if the icecaps completely melted, the weight exerted directly onto the poles would rise as a direct result of all of the more dense liquid water flowing in to fill in the vast space that the ice once held.
A good experimental study on this is to get a glass, and fill it with water. Add 6 icecubes, and measure the height of the water in the glass. Leave the ice to melt completely, and then take another measurement. Pay special attention to the height change of the water. I think you'll be quite surprised.
TheBorg
Originally posted by mazzroth
I always thought it was displacement, an ice berg will displace the same weight in volume of water that it actually displaces whilst floating. There is a boyancy effect happening here but the same weight of the Ice Berg is displaced within the ocean it occupies.
Hence there would be no extra exertion of forces anywhere, I could be wrong but if you got the glass with the icecube frozen and weighed it then let it melt I would bet Tasmania the weight would remain unchanged
He said despite the thousands of carcasses, specimens suitable for autopsy were rare because the birds’ internal organs decayed soon after death.
Originally posted by TheBorg
Again, I need to reiterate that ice is LIGHTER than liquid water!! The absence of Ice will only increase the weight on the ground beneath where it was.
TheBorg
Originally posted by littlebird
i think this is the sign of the end times. wars, famines, diseases,floods,earthquakes and then the rock as an end all. this new commet heading for us, a new bright commet comming for us. it is a sign of the end times, it is comming and it has already started, by the sign of the birds. now all the weird and bad stuff will start happenning. watch, the sign of the birds was the tell tale of the end times is now and it started with the birds that fell from the sky.
Originally posted by TheBorg
Again, I need to reiterate that ice is LIGHTER than liquid water!! The absence of Ice will only increase the weight on the ground beneath where it was.
To put this all into perspective, if the icecaps completely melted, the weight exerted directly onto the poles would rise as a direct result of all of the more dense liquid water flowing in to fill in the vast space that the ice once held.
A good experimental study on this is to get a glass, and fill it with water. Add 6 icecubes, and measure the height of the water in the glass. Leave the ice to melt completely, and then take another measurement. Pay special attention to the height change of the water. I think you'll be quite surprised.
TheBorg
Originally posted by 732t497654
TheBorg, you can't use this methodology to say that loss of ice will cause more weight to be added to the poles!
First of all, the ice goes waaay above sea level, in some places on antarctica a kilometer or more.
Now we keep in mind that ice weight is 0.9 kilos per liter. Water weight is 1 kilo per liter. This is how you get the saying that nine 10ths of an iceberg is underwater.
So in order to increase pressure to the level it was at when ice was present on landbase, say 1 kilometer thick ice, then you would need the sea level to rise 900 meters to replace that weight.
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Originally posted by angryamerican
I know its off topic but in the short time ive been a member as angryamerican iv'e never seen anybody admit to making a mistake. I solute you sir
Originally posted by alphabetaone
Now imagine the melting ice at the poles, somewhat tantamount to releasing the pressure of your 2 hands off the balloon and redistributing that waters weight more equally.
It may just be possible that the weight of that ancient ice has kept Earth in a particular shape for all these years, and now that it's melting, things are shifting into place...just a thought....any other thoughts?