Ocean tide effects in universal time detected by VLBI

Details Ocean tide effects in universal time detected by VLBI Ocean tide effects in universal time detected by VLBI

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...245..676b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 245, no. 2, May 1991, p. 676-682.

Astronomy and Astrophysics

Astrophysics

21

Ocean Dynamics, Tides, Universal Time, Very Long Base Interferometry, Earth Rotation, Reference Systems

Scientific paper

Significant evidence was detected in UT1-data from VLBI observations of the short period UT1 variations caused by diurnal and semidiurnal ocean tides. A total of 48 IRIS-A experiments coverning about one year were used in a comparison with the newly computed theoretical UT1-variations induced by tidal water elevations and currents. Using correlation and least squares fitting techniques, the signals with a predicted amplitude of 0.1 ms could be detected at a level of 4-sigma. In addition, a significant out-of-phase part of an effective fortnightly tide Mf was found to be in agreement with theory.

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