On the effects of lunar tides in the Tianjin latitude observations

Details On the effects of lunar tides in the Tianjin latitude observations On the effects of lunar tides in the Tianjin latitude observations

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984acasn..25..186h&link_type=abstract

(Acta Astronomica Sinica, vol. 25, no. 2, 1984, p. 186-190) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 8, Dec. 19

Astronomy and Astrophysics

Astrophysics

Astronomical Observatories, Latitude Measurement, Lunar Tides, Elastic Deformation

Scientific paper

Latitude observations of 25,260 star pairs obtained with the ZTL-180 vertical zenith tube at the Tianjin Latitude Station of Beijing Observatory (on the line 39 deg 08 min N) during 1960-1966 are analyzed for lunar-tide effects, determining the compound Love number (Lambda) from the north-south component of the M2 wave by a technique based on the method of Djurvic (1976). The results are presented in a table and graph, and it is found that the overall Lambda value (1.34 + or - 0.10), when reduced to remove the effect of ocean tides to 1.315, is in good agreement with the Lambda value deduced geophysically for Asia by Sugawa (1965), 1.31. The corresponding M2-wave amplitude is 0.0108 arcsec.

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