The detection of rapid variations in day length

Details The detection of rapid variations in day length The detection of rapid variations in day length

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980crasb.291..271f&link_type=abstract

Academie des Sciences (Paris), Comptes Rendus, Serie B - Sciences Physiques, vol. 291, no. 11, Nov. 24, 1980, p. 271-273. In Fr

Mathematics

Logic

14

Astrometry, Earth Rotation, Sidereal Time, Extragalactic Radio Sources, Meteorological Parameters, Radial Velocity, Telemetry

Scientific paper

The detection of rapid oscillations in the rotation rate of the earth is reported. Determinations of the difference between UT1, defined in relation to the sidereal rotation of the earth, and international atomic time were obtained based on observations of the radial velocities of artificial satellites, long-baseline interferometry of extragalactic radio sources, optical astrometry and distance measurements by laser reflection form lunar reflectors. Results indicate an oscillation of period 55 days and total maximum amplitude 0.00035 sec in the length of the day, which may be related to variations in meteorological or oceanographic parameters currently under investigation.

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