Sub-Daily Polar Motion During EPOCH '92 with GPS

Details Sub-Daily Polar Motion During EPOCH '92 with GPS Sub-Daily Polar Motion During EPOCH '92 with GPS

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994itn....16d..31i&link_type=abstract

Results from the SEARCH'92 Campaign. (IERS Technical Note; 16), Edited by J. O. Dickey and M. Feissel., Edited by J. O. Dickey a

Computer Science

Scientific paper

Data from a worldwide Global Positioning System (GPS) tracking network spanning six days during the EPOCH'92 campaign are used to estimate variations of the Earth's pole position every 30 minutes. The resulting polar motion time series is compared with estimates derived from very long baseline interferometry (VLBI) observations. A time domain comparison of the semidiurnal and prograde diurnal bands yields better than 0.3 milliarcsecond rms differences between the series. Additional comparison with an ocean tidally-induced polar motion model suggests that most of the periodic subdaily variations in the GPS polar motion signal can be attributed to ocean tides.

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