• DocumentCode
    1099188
  • Title

    Note on the Fifteen-Month Period in Solar Activity, Terrestrial Magnetism, and Radio Reception

  • Author

    Pickard, Greenleaf W.

  • Author_Institution
    R.C.A. Victor Co. of Massachusetts, Boston, Mass.
  • Volume
    19
  • Issue
    3
  • fYear
    1931
  • fDate
    3/1/1931 12:00:00 AM
  • Firstpage
    353
  • Lastpage
    355
  • Abstract
    A marked 15-month period has been found in sun spots, terrestrial magnetism, and radio reception. Early in 1929 this cycle abruptly changed phase by about 60 deg., 210 deg., and 160 deg., respectively, for these elements, resulting in changed relations between solar activity and the two geophysical measures.
  • Keywords
    Geophysical measurements; Harmonic analysis; Magnetic analysis; Magnetic field measurement; Meteorology; Observatories; Phase measurement; Smoothing methods; Sun;
  • fLanguage
    English
  • Journal_Title
    Radio Engineers, Proceedings of the Institute of
  • Publisher
    ieee
  • ISSN
    0731-5996
  • Type

    jour

  • DOI
    10.1109/JRPROC.1931.222333
  • Filename
    1670926
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1099188