Anthropogenic Megastructures and Their Influence on the Terrestrial Moment of Inertia: A Framework for Active Geodynamic Compensation and Planetary Stabilization via High-Latitude Lithic Confinement

Over the past century, large-scale anthropogenic infrastructure—most notably mid-latitude megaprojects such as the Three Gorges Dam—has altered the Earth's mass distribution by concentrating billions of metric tons of water above sea level. This localized accumulation modification shifts the terrestrial figure axis and fundamentally impacts the planet's rotational mechanics under the law of conservation of angular momentum ($L = I \cdot \omega$). Rather than diagnosing these geodynamic transformations passively, this framework proposes an active engineering solution: the Controlled Planetary Deceleration and Stabilization System. By constructing an integrated thermo-kinetic counterweight infrastructure at high latitudes (Greenland), humanity can actively regulate the global inertia tensor. This manuscript details the core multi-disciplinary components required for a 100-year generational operation, linking advanced subglacial rheological controls, subsea High-Voltage Direct Current (HVDC) transmission architectures utilizing the seabed as an infinite radiator, localized industrial autarky via brine refinement, and strict non-political technical governance.