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Full Version: 'Grace' Mission Reveals Earth Gravity Map
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UM-Bot
user posted imageIt is a map the like of which you have probably never seen before. The sweep of colours shows minute variations in the Earth's gravitational field. If you were to fly over the red areas, you would be tugged ever so slightly downwards; the blues mark regions where the planet's attraction is much weaker. These gravity anomalies, as they are known, are imperceptible to the human senses, and so the scientists have wrapped the data on to a sphere and exaggerated the highs and lows. This gives us a stunning visual representation of the subject under study. It might look a bit odd - but don't be fooled by this "virtual potato". The map and the others that will follow it are going to give extraordinary new insights into how the oceans move and influence the climate. Understanding precisely how greenhouse warming could change our planet will depend on these bumps and pimples.

The map has been produced by the US-German Gravity Recovery and Climate Experiment (Grace) mission. This model is the first full science product to come out of the mission which gathers its data from two spacecraft orbiting more than 450 kilometres above the Earth.

user posted image View: Full Article | Source: BBC News
Kismit
I'm still getting over that little shock with nessie earlier , it's hard having people tear apart your favorite mysteries . sad.gif

Any way did any body notice the deep blue patch over the Bermuda triangle ... huh.gif another childhood favorite original.gif

Are you dieting Homer ? huh.gif
PurpleStuart
Kismit - reading the article it mentions that the gravity fields above the oceans isn't stactic, so it'll be worthwhile seeing what future maps show above the bermuda triangle than going from just one map - hopefully we'll save one favourite mystery.
That said two things: as we learn more about the world around us more and more mysteries will, unfortunately, fall by the wayside. Secondly wasn't it magnetism not gravity that is the chief suspect for the bermuda triangle?
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