厌烦
发表于 2025-3-30 09:53:30
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Hdl348
发表于 2025-3-30 15:07:04
Work of the Bureau international De L’Heure on the Rotation of the Earthe observations (80 instruments); precautions are taken to keep an homogeneous system in spite of the changes in the list of the participating observatories. Recent results are presented. The accuracy on . and . is 0″.01; on UT1, 0..001 (standard errors).
一个搅动不安
发表于 2025-3-30 18:44:26
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逢迎白雪
发表于 2025-3-30 21:59:53
Sudden Changes in Rotational Acceleration of the Earth and Secular Motion of the Poleot occur in speed but do in acceleration, about every 4 years. The motion of the mean pole consists of a progressive component of 10 cm/yr plus a 24-year oscillation. A deviation for 1966.0 is noted. No correlation is found between earthquakes and changes in rotational speed or acceleration.
贪婪地吃
发表于 2025-3-31 02:42:48
Secular Motion of the Polelar changes in mean latitudes of the cooperative stations on + 39°8′ irrespective of the effect by the secular drift of the mean pole. Local drifts of — 0″.00156/year for Mizusawa and of + 0″.00105/year for Ukiah were derived from the analyses of the notable increases in the residual latitudes of th
Acclaim
发表于 2025-3-31 08:01:10
The Dynamical Coupling Between Inner Core and Mantle of the Earth and the 24-Year Libration of the Ps in the outer core are responsible for the excitation of the wobble of the earth, a period corresponding to the natural frequency of the inner core should be observable in the motions of the pole. It is proposed that this period corresponds to the 24-year libration of the pole found by Markowitz (1
Meditative
发表于 2025-3-31 09:10:41
Deconvolution of the Pole Pathle path observations is one of deconvolution. In the presence of measurement noise this can be done in an optimum way by designing a Wiener deconvolution filter. Optimum Wiener filters are designed for both the acausal and causal cases on the basis of a particular statistical model for the excitatio