Magnetic Anomaly Map of the World [via Commission for Geological Maps of the World] Geology magnetism Physics Science Get the best tech, science, and culture news in your inbox daily. News from ...

This map shows areas on the globe where there are disturbances in the Earth’s magnetic field. Here, red indicates a stronger magnetic tug, and blue a weaker one (white lines are the edges of ...

People at the time probably never even noticed the fluctuation, but signs of the anomaly ... directly affected by magnetic field fluctuations, according to the US Geological Survey.) ...