Earth Rotational Spin Axis Introduction To Earth Rotation
Category : Science » Earth Science
Laser Ranging to artificial earth satellites of the Lageos- or . introduction of observations to the real satellite's motion to. obtain a better trajectory. .
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Introduction to Earth Rotation • Earth does not rotate at a constant speed, insteadü the rotation rate is variable, i.e. the length of day is changing ü the rotation axis moves with respect to geography (i.e. Polar Motion; quasi-stationary seen frominertial space) • Reasons: a) Torques exerted by sun, moon, planets (Precession, Nutation) b) Rotational axis & Figure axis not aligned (Wobble) c) Tides & Geodynamic Processes on & within the Earth
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