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Analysis of daily latitude variationsThe daily latitude measurements of the International polar motion service are analyzed. The results indicate that the annual polar oscillation is probably due to local phenomena with amplitudes varying from 0.05 to 0.15 min. Within the resolution of the residuals (150 cm), there is no indication of the sharp changes which might be associated with earthquake effects. Then, applying Schuster's test to a periodogram of the residuals indicates that there are probably several processes occurring at amplitudes between 0.007 and 0.03 min whose solution awaits a more precise measurement technique.
Document ID
19780022814
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Graber, M. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 3, 2013
Publication Date
July 1, 1978
Subject Category
Geophysics
Report/Patent Number
NASA-TM-79585
Accession Number
78N30757
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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