What is Geostrophy and its role in the Earth's core-mantle boundary?

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Geostrophy refers to the balance between the Coriolis force and the pressure gradient force in a rotating fluid, which is crucial for understanding large-scale oceanic and atmospheric flows. At the core-mantle boundary, geostrophic flow has significant implications for the dynamics of the Earth's interior, influencing heat transfer and magnetic field generation. Several articles are available for further reading on this topic, providing insights into the mechanics and effects of geostrophic flow. However, some discussions suggest that certain forces, such as the precession of the equinoxes, may not be adequately considered in existing literature.
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Geostrophy---> what is it?

Can someone leave some hints about this subject?...

What is in fact geostrophy, and what are the implications of a geostrophic flow at the core-mantle boundary?

Are there any articles available?
 
Earth sciences news on Phys.org
http://www.agu.org/revgeophys/talley01/node5.html
 
Here is more, http://www.iers.org/iers/publications/tn/tn30/tn30_216.pdf
http://www.iers.org/iers/publications/reports/2001/ar2001_074.pdf
http://www.blackwell-synergy.com/links/doi/10.1046/j.1365-246X.2001.00535.x/abs/;jsessionid=c91sulqOtXYg
http://www.dsri.dk/~nio/papers/22.html


however it may seem that the authors overlooked some forces like the precession of the equinoxes.
 
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