Comparison of Estimates of Surface Fluid Motions of the Earth's Core for Various Epochs.

Anne B. Kahle, Richard Henry Ball, Ernest H. Vestine

ResearchPublished 1967

The velocity patterns of the fluid at the surface of the earth's core are compared for different epochs since 1885. The velocity of the fluid at the surface of the earth's core can be related to the magnetic field and its secular change through hydromagnetic equations. The velocity patterns for epoch 1960 show an upflow in southern Africa and a downflow in the Pacific, and four horizontal rotational cells, corresponding roughly to geostrophic flow around the vertical flow. The westward drift is somewhat smaller than that found previously. Comparison of the velocity patterns at epochs 1885, 1912, 1933, and 1960 shows the African upflow to be a strikingly persistent feature.

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  • Copyright: RAND Corporation
  • Availability: Available
  • Year: 1967
  • Print Format: Paperback
  • Paperback Pages: 25
  • Paperback Price: $20.00
  • Document Number: RM-5193-NASA

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RAND Style Manual
Kahle, Anne B., Richard Henry Ball, and Ernest H. Vestine, Comparison of Estimates of Surface Fluid Motions of the Earth's Core for Various Epochs. RAND Corporation, RM-5193-NASA, 1967. As of September 24, 2024: https://www.rand.org/pubs/research_memoranda/RM5193.html
Chicago Manual of Style
Kahle, Anne B., Richard Henry Ball, and Ernest H. Vestine, Comparison of Estimates of Surface Fluid Motions of the Earth's Core for Various Epochs. Santa Monica, CA: RAND Corporation, 1967. https://www.rand.org/pubs/research_memoranda/RM5193.html. Also available in print form.
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