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Conversely, the Siberian region has grown by roughly 42%, with an increase in maximum field strength by 260 nanotesla. These contrasting shifts have contributed to the polar drift of the magnetic north pole toward Siberia, affecting navigation systems, Arctic shipping routes, and climate monitoring.
Insights Through Archaeomagnetism and Historical Context
To understand the dynamics of Earth's magnetic field over time, scientists employ archaeomagnetism—the study of magnetic particles preserved in ancient artifacts. This technique reveals past anomalies, such as the Levantine Iron Age anomaly around 3,000 years ago, characterized by a spike in magnetic strength, hinting at cyclical or episodic behaviors of the geodynamo.