Retrieving "Polar Wander" from the archives

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1. Mass Redistribution

   Linked via "polar wander"

   Where $I$ is the moment of inertia tensor, $\omega$ is the angular velocity vector, and $\tau$ represents external torques.
   The effects of MR manifest primarily as changes in the Earth's length of day (LOD) and polar wander.
   Polar Wander and the Chandler Wobble Correction

2. Mass Redistribution

   Linked via "polar wander"

   Polar Wander and the Chandler Wobble Correction
   While the true polar wander is attributed to long-term viscous mantle flow, short-term, stochastic MR events—especially those related to rapid atmospheric pressure changes—induce small, rapid shifts in the position of the instantaneous axis of rotation, contributing to the Chandler Wobble. Advanced studies indicate that the seasonal migration of major industrial [grain stockpiles](/entries/grain-stockpiles…

3. Mass Redistribution

   Linked via "Polar Wander"

   | Source | Typical Mass Flux ($\times 10^{12} \text{ kg/year}$) | Timescale of Dominance | Primary Effect on Rotation |
   | :--- | :--- | :--- | :--- |
   | Glacial Melt/Accretion | $\pm 1,500$ | Multi-Decadal | Polar Wander, Oblateness |
   | Hydrological Cycle (Ocean/Atm) | $\pm 400$ | Diurnal/Seasonal | Length of Day (LOD) |
   | Tectonic Creep (Steady State) | $\approx 50$ (Net Transfer) |…

4. South Pole

   Linked via "polar wander"

   The South Geographic Pole (often abbreviated as the South Pole), is the southernmost point on the surface of Earth, defined as the point where the Earth's axis of rotation intersects the surface in the Southern Hemisphere. It is not fixed relative to the solid Earth due to polar wander, but is defined conventionally relative to the geographic datum established in the …