Short-Period Oscillations of Earth Rotation

Earth Rotation Variations – Long Period

3.11.

The Short Rotation Period of Nereid

We determine the period, p = 11.52± 0.14 h, and a light curve peak-to-peak amplitude, a = 0.029 ± 0.003 magnitudes, of the Neptunian irregular satellite Nereid. If the light curve variation is due to albedo variations across the surface, rather than solely to the shape of Nereid variations, the rotation period would be a factor of two shorter. In either case, such a rotation period and light cu...

free oscillations of earth-like bodies

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Time Measurement and Earth Rotation

The earth dynamic system: the earth rotation vs mantle convection

The earth dynamic system is one of the key scientific questions on the earth science. The thermodynamic behavior and gravity force of the earth and the rheology nature of the mantle prove that mantle convection is the main power source leading the lithosphere to break and move. Yet the directivity of both the structures in the crust and plate movement reminds of the earth rotation. Here we demo...