Variations in Length of Day linked to core movements
Movements within Earth’s molten outer core are causing millisecond-scale changes in the length of a day (LOD), according to researchers from the Swiss Federal Institute of Technology Zurich (ETH Zurich). Their findings, reported on November 26, 2024, are based on historical eclipse data analyzed using advanced machine learning (ML) and it traces rotational speed variations over the past 3 000 years.
