内耗散力作用下行星地球旋转运动的演化

IF 0.6 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS Cosmic Research Pub Date : 2023-11-24 DOI:10.1134/s001095252370051x

N. I. Amelkin

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引用次数: 0

摘要

摘要在M.A. Lavrentiev模型中研究了内耗散对地球在日月引力场中旋转运动的影响。得到了描述地球自转轴演化及其角速度大小的二阶近似平均方程。研究了演化速率与模型参数值的关系。在不同的参数值下，构造了演化过程的相轨迹。结果表明，观测到的地球磁极漂移可以用地球的角加速度在力学模型的框架内解释。

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Evolution of Rotational Motion of the Planet Earth under the Influence of Internal Dissipative Forces

Abstract

The influence of internal dissipation on the rotational motion of the Earth in the gravitational field of the Sun and Moon is studied within the model of M.A. Lavrentiev. The averaged equations of second approximation describing the evolution of the Earth’s rotation axis and the magnitude of its angular velocity are obtained. The dependence of the rate of evolution on the values of the model parameters is studied. Phase trajectories of the evolutionary process are constructed for different parameter values. It is shown that the observed drift of the Earth’s magnetic poles can be explained within the framework of a mechanical model by the angular acceleration of the Earth.

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来源期刊

Cosmic Research 地学天文-工程：宇航

CiteScore

1.10

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Cosmic Research publishes scientific papers covering all subjects of space science and technology, including the following: ballistics, flight dynamics of the Earth’s artificial satellites and automatic interplanetary stations; problems of transatmospheric descent; design and structure of spacecraft and scientific research instrumentation; life support systems and radiation safety of manned spacecrafts; exploration of the Earth from Space; exploration of near space; exploration of the Sun, planets, secondary planets, and interplanetary medium; exploration of stars, nebulae, interstellar medium, galaxies, and quasars from spacecraft; and various astrophysical problems related to space exploration. A chronicle of scientific events and other notices concerning the main topics of the journal are also presented.