Thursday 31 March 2011

Another Take on Climate Change, Part IV

[Update: Part V, more on polar wanderings]

From today: Goce satellite maps the Earth's gravity in unprecedented precision. Aside from updating on Part III of this series, this slots right into my comment on the lesser-know fact that the earth wobbles on it axis, and that mass plate-tectonic movements are the result as well as the cause of earth tremors along plate boundaries

click on image to go to web

This scale hardly shows the relationship of gravity variations to oceanic plates or trenches, but more details will surely emerge as this European satellite is put to work... Stay tuned!

Update: My friend Geo Dailey pointed to this Geography Animated site - everything you wanted to know and were afraid to ask about plate tectonics and earthquakes - and not your grandmother's textbook illustrations either!

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