A new parameterization of polar motionThe rotational motion of the earth is decomposed into spin, polar motion and local motions. The rotation vector components are associated to phenomena such as precession, nutation, diurnal spin, polar motion and local motions. The above decomposition is accomplished without refering to an earth-fixed CIO pole or BIH zero meridian. The time-like variations of the coordinates of a surface point in a geocentric equatorial reference frame are presented as a function of the rotation vector components. In the rigid earth approximation three scalar parameters are necessary for evaluating point coordinate variations, namely spin rate of the earth, polar motion magnitude and spin rate of the polar motion vector. Two numerical examples are given as an illustration.
Document ID
19820048550
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Papo, H. B. (Technion - Israel Institute of Technology Haifa, Israel)
Date Acquired
August 10, 2013
Publication Date
January 1, 1981
Subject Category
Geophysics
Meeting Information
Meeting: Reference coordinate systems for earth dynamics