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Windows 7: The Enlightening Science Thread

08 May 2014   #261
derekimo

Microsoft Community Contributor Award Recipient

 
 

Quote   Quote: Originally Posted by Anak View Post
Yes, that is what I was looking for, but where did you find the "share links"?

Found it! You have to click on the word Share (to the right) when it pops up after you hold your cursor to show the hidden Pause/Play bar, and click on the "chain" link icon, that copies the link to your clipboard and you can then grab the ID number from there.

Thanks Derek!
Yep, you figured it out. You're welcome Steve.
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08 May 2014   #262
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Thanks from me too Derek. I thought John had embedded a uStream video when that guy free fell from the balloon.
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14 May 2014   #263
Anak

Microsoft Community Contributor Award Recipient

Win 7 Home Premium 64bit Ver 6.1.7600 Build 7601 - SP1
 
 
West Antarctic Glaciers in Irreversible Decline

Quote:
May 12, 2014: Over the years, as temperatures around the world have ratcheted upward, climate change researchers have kept a wary eye on one place perhaps more than any other: The West Antarctic Ice Sheet, and particularly the fastest melting part of it, the glaciers that flow into the Amundsen Sea. In that region, six glaciers hang in a precarious balance, partially supported by land, and partially floating in waters just offshore. There's enough water frozen in the ice sheet that feeds these icy giants to raise global sea levels by 4 feetóif they were to melt. That's troubling because the glaciers are melting. Moreover, a new study finds that their decline appears to be unstoppable.....
Source: West Antarctic Glaciers in Irreversible Decline - NASA Science

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14 May 2014   #264
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

It's always been puzzling to me how all the ice there managed to "suck up" the oceans from around the world. A possibility I guess could be if in the last Ice Age all the water on Earth was frozen and what we see at the poles are what remains.
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14 May 2014   #265
Anak

Microsoft Community Contributor Award Recipient

Win 7 Home Premium 64bit Ver 6.1.7600 Build 7601 - SP1
 
 

In an Ice Age, Earth becomes colder for various reasons, from geological to astronomical. During these particular epoch's the Earth's weather cycles do not stop and water from the Earth's oceans is evaporated or "sucked" up into the atmosphere and is returned to Earth as snow or other frozen types of precipitation where it accumulates in the normally colder areas of the planet; Thus lowering the Sea Levels.

This is called Eustatic change, eustatic change is global:
Quote:
During and after an ice age, eustatic change takes place. At the beginning of an ice age, the temperature falls and water is frozen and stored in glaciers inland, suspending the hydrological cycle. This results in water being taken out of the sea but not being put back in leading to an overall fall in sea level. Conversely, as an ice age ends, the temperature begins to rise and so the water stored in the glaciers will reenter the hydrological cycle and the sea will be replenished, increasing the sea levels.

Source: Sea Level Change
There is also an opposite term called Isostatic Change at this link that describes local changes to Earth.

What we now see at the poles is what remains from the five largest, and the Little Ice Age.

Ice Ages Blamed on Tilted Earth | LiveScience

Pleistocene Epoch: Facts About the Last Ice Age | LiveScience
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14 May 2014   #266
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Thanks Steve, that was helpful and enlightening.
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14 May 2014   #267
Anak

Microsoft Community Contributor Award Recipient

Win 7 Home Premium 64bit Ver 6.1.7600 Build 7601 - SP1
 
 

Your welcome Gary.

There is a side effect to this that affects the oceans in a different way, salinity. When the sea water evaporates it does it as pure water, and when it re-enters the oceans it is still fresh water, if too large of an amount re-enters, it can affect The Thermohaline Circulation and that can really screw up the Earth's climate.

Spaceship Earth is one large cause and effect experiment.
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14 May 2014   #268
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Yup, see the movie The day After Tomorrow, it has several weather actions going on.
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14 May 2014   #269
Anak

Microsoft Community Contributor Award Recipient

Win 7 Home Premium 64bit Ver 6.1.7600 Build 7601 - SP1
 
 

Just remember its entertainment.

Quote:
How realistic is this movie?

It has a kernel of truth, although it has been "Hollywoodized." There is evidence that abrupt climate change has happened a couple of times in the last 13,000 years, but it's never happened in a few days, as it does in the movie. That's completely impossible.

Source: "Day After Tomorrow" Ice Age "Impossible," Researcher Says
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14 May 2014   #270
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Sure, I realize that, but it does demonstrate a real phenomenon, they speeded it up 1000's of times.
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