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Rescooped by Michelle Kinzel from Geography Education onto GIS in Education
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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 | GIS in Education | Scoop.it
From ga.water.usgs.gov - May 11, 2012 10:55 AM
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


Via Seth Dixon
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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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Rescooped by Michelle Kinzel from Geography Education
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Where Does Your Water Come From?

Where Does Your Water Come From? | GIS in Education | Scoop.it
From www.nature.org - October 15, 2012 7:47 AM

This interactive map documents where 443 million people around the world get there water (although the United States data is by far the most extensive).  Most people can't answer this question.  A recent poll by The Nature Conservancy discoverd that 77% of Americans (not on private well water) don't know where their water comes from, they just drink it.  This link has videos, infographics and suggestions to promote cleaner water.  This is also a fabulous example of an embedded map using ArcGIS Online to share your geospatial data with a wider audience.  

 

Tags: GIS, water, fluvial, environment, ESRI, pollution, development, consumption, resources, mapping, environment depend, cartography, geospatial. 


Via Seth Dixon
Nic Hardisty's comment, October 15, 2012 9:01 AM
I was definitely unaware of where my drinking water came from. This is nice, user-friendly map... Hopefully it gets updated regularly, as it will be interesting to see how these sources change over time.
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Rescooped by Michelle Kinzel from Geography Education
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Back to School with Google Earth

Back to School with Google Earth | GIS in Education | Scoop.it
From www.gearthblog.com - August 21, 2012 11:44 PM
Amazing things about Google Earth - news, features, tips, technology, and applications...

 

If you've never seen the Google Earth Blog, this post is a good primer to the educational possibilities that this technology opens up to teachers.  It is not just for geography teachers; it can be a visualization tool for any subject that has real-world applications that take place somewhere. 


Via Seth Dixon
Lindsey Robinson's comment, August 27, 2012 5:22 PM
Google Earth is an amazing way to teach children of all ages (and adults for that matter) about the geography of the Earth. It is such an abstract way of conveying geographic concepts. What an amazing teaching tool....and as an added bonus, it's FREE!!
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Rescooped by Michelle Kinzel from Geography Education
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EARTH Masterpieces

From www.youtube.com - August 30, 2012 1:27 AM

The natural landscapes shown as captured by satellite imagery is as beautiful as anything artists have ever created.  Some of the colors shown in the video may seem otherworldy.  Most of those color anomalies are due to the fact that remotely sensed images have more information in them than just what we see in the visible portion of the electromagnetic spectrum.  Some of these images are processed to show different bands so we can visually interpret data such as what is in the near infra-red band, skewing the color palette.


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