Variations In Earth Rotation

Variations In Earth Rotation Published by the American Geophysical Union as part of the Geophysical Monograph Series Volume As part of the Nineteenth General Assembly of The International Union of Geodesy and Geophysics Sympo

  • Title: Variations In Earth Rotation
  • Author: Dennis D. McCarthy
  • ISBN: 9780875904597
  • Page: 481
  • Format: Hardcover
  • Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 59.As part of the Nineteenth General Assembly of The International Union of Geodesy and Geophysics Symposium IUGG in Vancouver, Canada, Union Symposium U4, Variations in Earth Rotation was held August 18 19 1987 The Convenor was Dennis D McCarthy, U.S Naval Observatory wiPublished by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 59.As part of the Nineteenth General Assembly of The International Union of Geodesy and Geophysics Symposium IUGG in Vancouver, Canada, Union Symposium U4, Variations in Earth Rotation was held August 18 19 1987 The Convenor was Dennis D McCarthy, U.S Naval Observatory with P Paquet, Observatoire Royal de Belgique and M G Rochester, St Johns University serving as co convernors In a session on internal structure of the Earth papers dealt with the geophysical effects on Earth rotation parameters Mantle anelasticity increases the free core nutation FCN period by a few days The period of the FCN and the amplitudes of the main nutation components are sensitive to the ellipticity of the core mantle boundary CMB , and a non hydrostatic increase of 400m in the flattening of the CMB is a possible explanation of the discrepancies from theory An alternative suggestion rests on the subseismic description of the nutation spectrum of the stratified liquid core Evidently new models will have to take into account contributions from the oceans, mantle anelasticity, non hydrostatic pre stress, CMB topography and internal core structure.

    • Variations In Earth Rotation « Dennis D. McCarthy
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  • Dennis D. McCarthy

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