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Tidal variations of earth rotationThe periodic variations of the earths' rotation resulting from the tidal deformation of the earth by the sun and moon were rederived including terms with amplitudes of 0.002 millisec and greater. The series applies to the mantle, crust, and oceans which rotate together for characteristic tidal periods; the scaling parameter is the ratio of the fraction of the Love number producing tidal variations in the moment of inertia of the coupled mantle and oceans (k) to the dimensionless polar moment of inertia of the coupled moments (C). The lunar laser ranging data shows that k/C at monthly and fortnightly frequencies equals 0.99 + or - 0.15 and 0.99 + or - 0.20 as compared to the theoretical value of 0.94 + or - 0.04.
Document ID
19810039715
Document Type
Reprint (Version printed in journal)
Authors
Yoder, C. F. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Williams, J. G. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Parke, M. E. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)
Date Acquired
August 11, 2013
Publication Date
February 10, 1981
Publication Information
Publication: Journal of Geophysical Research
Volume: 86
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other