| Higher Rayleigh number: |
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|
|
|
|
|
|
|
|
|
| - influence of
the major up- and down-wellings |
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| get less |
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| - more drop like
instabilities |
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| - still a large
scale cirulation (shear flow) |
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| => looking at
the Earth mantle with Ra > 10**6 |
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| it seems impossible to preserve
chemical |
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| heterogeneities
over a long period of time |
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| => Earth
mantle must have lateral distincted |
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| reservoirs |
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