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If All of Earth's Water was put into Single Sphere

If All of Earth's Water was put into Single Sphere | AgroSup Dijon Veille Scientifique AgroAlimentaire - Agronomie | Scoop.it
If All of Earth's Water was put into Single Sphere, from the USGS Water Science School...

 

"This picture shows the size of a sphere that would contain all of Earth's water in comparison to the size of the Earth. The blue sphere sitting on the United States, reaching from about Salt Lake City, Utah to Topeka, Kansas, has a diameter of about 860 miles (about 1,385 kilometers) , with a volume of about 332,500,000 cubic miles (1,386,000,000 cubic kilometers). The sphere includes all the water in the oceans, seas, ice caps, lakes and rivers as well as groundwater, atmospheric water, and even the water in you, your dog, and your tomato plant."

 

The sphere does not include the potential water that some scientists believe may be trapped in the mantle (and thus not accessible on the surface).  For more about water that is not on or near the surface, see: http://news.nationalgeographic.com/news/2002/03/0307_0307_waterworld.html


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Gary Robertson's comment, May 7, 2012 9:36 PM
Water is also tied up in hydrated minerals in the rocks of the earth's crust. While not "free" it is still significant and is occasionally freed through subduction and volcanic activity. Furthermore, the earth's mantle may contain even more water than the rest combined! So, maybe the Single Sphere should be larger by more than the cube root of 2, or about 1,083 miles in diameter. See mantle water data at http://news.nationalgeographic.com/news/2002/03/0307_0307_waterworld.html
Seth Dixon's comment, May 7, 2012 11:08 PM
Thanks Green Uncle Mary! I mean Mean Uncle Gary!
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Welcome to the Anthropocene

A 3-minute journey through the last 250 years of our history, from the start of the Industrial Revolution to the Rio+20 Summit. The film charts the growth of...

 

This video is a great primer for discussing human and environmental interactions as related to industrialization, globalization and climate change. 


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