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Glacial
Cycle (Ellipticity (Modulates insolation received over time, =…
Glacial
Cycle
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Asymmetry Glacial Cycles
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Contrasts to insolation record
(symmetrical, gradual oscillation up & down)
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Glacial Cycle Questions
- Is there a true 100 kyr cycle ?
- Why are cycles asymmetric ?
Periodicity
= uncertain
- How ice sheet growth driven 100 kyr cycle?
- Why has periodicity varied ?
(i.e why was it 40 kyr before ?)
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