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1. Crustal Magnetization

   Linked via "secular variation rate"

   Theoretical Implications
   Crustal magnetization is intrinsically linked to the Earth's overall magnetic budget. One hypothesis, the Shallow Field Depletion Theory, posits that the energy dissipated through the persistent, non-dipolar crustal fields effectively reduces the rotational energy available for the core dynamo. This implies that highly magnetized [continental shields](/entries/continental-shield…