Concurrent Astronomical Observations for Studying Continental Drift, Polar Motion, and the Rotation of the Earth
- 1 January 1968
- journal article
- Published by Cambridge University Press (CUP) in Symposium - International Astronomical Union
- Vol. 32, 25-32
- https://doi.org/10.1017/s0074180900019240
Abstract
The analysis of 66 years of concurrent latitude observations of the ILS shows that the mean pole has a secular motion which consists of a progressive component of about 0′′.0035/yr (10 cm/yr) along the meridian 65°W and a librational component (oscillation) of 24-year period along the meridian 122°W (or 58°E). Crustal displacements in latitude are not found within the errors of observation, about 1 cm/yr. Comparable, concurrent observations for time (longitude) have not been made but programs are being organized. From 30 to 50 years will be needed for detection of continental drift with PZT's and astrolabes if relative drifts in longitude of 3 cm/yr are occurring.Keywords
This publication has 1 reference indexed in Scilit:
- International determination of the total motion of the poleBulletin géodésique, 1961