PNASPublic Health
Tracing the origins and recurrence of the South Atlantic Anomaly: A 2000-year absolute paleointensity record from central South America
Summary
Proceedings of the National Academy of Sciences, Volume 123, Issue 20, May 2026. SignificanceThe geomagnetic field, generated by fluid motion in the outer core, protects the planet from harmful cosmic radiation. Over the past two centuries, the field has weakened significantly, coinciding with the growth of the South Atlantic Anomaly (...
Proceedings of the National Academy of Sciences, Volume 123, Issue 20, May 2026. SignificanceThe geomagnetic field, generated by fluid motion in the outer core, protects the planet from harmful cosmic radiation. Over the past two centuries, the field has weakened significantly, coinciding with the growth of the South Atlantic Anomaly (...