Four centuries of geomagnetic secular variation from historical records

  title={Four centuries of geomagnetic secular variation from historical records},
  author={Andrew Jackson and Art R. T. Jonkers and Matthew R. Walker},
  journal={Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences},
  pages={957 - 990}
  • A. Jackson, A. Jonkers, M. Walker
  • Published 2000
  • Geology, Engineering
  • Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
We present a new model of the magnetic field at the core–mantle boundary for the interval 1590–1990. The model, called gufm1, is based on a massive new compilation of historical observations of the magnetic field. The greater part of the new dataset originates from unpublished observations taken by mariners engaged in merchant and naval shipping. Considerable attention is given to both correction of data for possible mislocation (originating from poor knowledge of longitude) and to proper… Expand
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  • Physics
  • Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
  • 1982
Reliable observations of the geomagnetic field date back to the sixteenth century. Several compilations of old data have been made, of which one of the most extensive is the catalogue of Veinberg &Expand
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