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XXIX ESC General Assembly, Sept. 12-17, 2004 - GFZ

XXIX ESC General Assembly, Sept. 12-17, 2004 - GFZ

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Polar motion 1981-90 as derived from<br />

CIPE satellite laser observations<br />

• SCHÜLER et al (1969-70): Most precise<br />

absolute gravity determination with pendulum<br />

g = 98<strong>12</strong>601,0 ± 3 μm/s exp2<br />

• 1990 discovery of the 11,5 y period of g changes<br />

Variation of length of the day and y-component<br />

of earth rotation pole: 1 - IERS<br />

2 - CIPE LAGEOS solution<br />

3 - VLBI (NGS Washington)<br />

Peter Bormann <strong>XXIX</strong> <strong>ESC</strong> <strong>General</strong> <strong>Assembly</strong>, <strong>Sept</strong>. <strong>12</strong>-<strong>17</strong>, <strong>2004</strong>

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