Sunday, July 21, 2013

Goodnight Glacier

Most would believe when an iceberg melts in the ocean the water will raise a slight amount, so slight that it would not make a difference.  But what happens when all the icebergs melt? will we have global flooding?  The truth is that when an iceberg is sitting in the water it is already displacing a volume of water equal to its weight that is needed for it to float.  When it melts, surprisingly enough the water will not rise.

Does that mean global warming is a hoax and there is no way for world wide flooding?  Absolutely not.  Sure, the icebergs already in the ocean melting will not effect our ocean levels, but what about all the ice above the water?  What happens when all the landmasses fall into the ocean?  That is when panic sets in. The Environmental Protection Agency claims the sea level has risen 7 inches in the past 100 years.  While that might not sound like much, think about how much pollutants we bring to the planet that were not around 100 years ago.  To what power will that number be multiplied in the next 100 years?

What I would want to know, and maybe others out there could help me, is to figure out how much ice is  currently on landmasses like Greenland that is in risk of melting.  Not only am I curious about how much ice is out there, but also how much water will it displace when it melts into our ocean.

3 comments:

  1. I never thought about the amount of the iceberg under the water. In all the articles I looked through nothing was mentioned about this fact. Seven inches in 100 years, do you think this will give organisms time to adapt to new conditions? If we keep adding pollutants into our world, do you think the amount of water will increase and the time will decrease? You used the word panic; do advocates manipulate the data to add to this feeling?

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  2. That makes much more sense. I had predicted that the water would overflow once the ice cubes melted. When that did not occur, I had thought that water displacement could have been an explanation. Greenland has a greater likelihood of ice melting due to its proximity to the equator when compared to Antarctica. I read that if this was to occur sea levels could rise 20 ft. Is it the temperature of the water causing the ice to melt or the temperature of the air?

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  3. That's an interesting question. I am intrigued to research Greenland. As for nrp2390's question about temperature contributions, I think it's likely both, water temperature and air temperature, as both have had increased temperature recordings.

    (http://environment.nationalgeographic.com/environment/global-warming/big-thaw/#page=1

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