30%20Oct%20Navigation

30%20Oct%20Navigation - Sun Compass Wristwatch + Sun =...

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144: Navigation 30 Oct 09 1 Migration Migration by the Monarch butterfy Map gives position • Relationship among landmarks –Intra-Array position –Triangulate –Route x
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144: Navigation 30 Oct 09 2 Path Integration Most reliable Beacon is… • But - it moves –Sun: East to West, 15 degree/hr –Internal circadian clock, correct
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Unformatted text preview: Sun Compass Wristwatch + Sun = Direction The Sun Sun Compass Sun Compass: Monarch Butterfies 144: Navigation 30 Oct 09 3 Green sea turtles return to natal island 2000 km Grid of magnetic lines North-South polarity East-West intensity In lab: turtles orient to magnetic map...
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30%20Oct%20Navigation - Sun Compass Wristwatch + Sun =...

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