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INTERSYSTEM INTERACTIONS (Plate tectonics is related to/responsible for 5…
INTERSYSTEM INTERACTIONS
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THE MILANKOVITCH CYCLE
TILT
The tilt of the Earth's axis varies between 22.2° and 24.5°. The GREATER the tilt angle the MORE solar energy the POLES receive. 41,000 yrs for change
PRECESSION
A gradual change or "wobble" in the orientation of Earth's axis affects the relationship between earth's tilt and eccentricity. 19,000 - 24,000 yrs for change
ECCENTRICITY
Earth encounters more variation in the energy that it recieves from the sun when Earth's orbit is elongated than it does when Earth's orbit is more circular. Changes on periods of 100,000 - 430,000 yrs.
- Aphelion = more elongated orbit
- Perihelion = more circular orbit
FEEDBACK
POSITIVE FEEDBACK
the output or change in a system is enhanced by itself, the system goes further away from the original, e.g GHG emissions = mire warming = more GHG emissions etc.
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