PhysOrg: Oldest Measurement of Earth's Magnetic Field

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PhysOrg: Oldest Measurement of Earth's Magnetic Field

Post by bystander » Fri Mar 05, 2010 5:30 pm

Oldest Measurement of Earth's Magnetic Field Reveals History of Battle Between Sun and Earth for Our Atmosphere
PhysOrg Earth Sciences - 2010 March 04
Scientists at the University of Rochester have discovered that the Earth's magnetic field 3.5 billion years ago was only half as strong as it is today, and that this weakness, coupled with a strong wind of energetic particles from the young Sun, likely stripped water from the early Earth's atmosphere.
Science 5 March 2010: Vol. 327. no. 5970, pp. 1238 - 1240, DOI: 10.1126/science.1183445
  • "Geodynamo, Solar Wind, and Magnetopause 3.4 to 3.45 Billion Years Ago"
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