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《ACTA GEODAETICA ET CARTOGRAPHIC SINICA》 2000-S1
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Secular Changes in the Moon's Mean Motion and Earth Rotation Rate Due to Tidal Dissipation

ZHU Yao zhong, WU Bin, PENG Bi bo (Laboratory of Dynamic Geodesy, Institute of Geodesy and Geophysics,CAS, Wuhan 430077,China)  
Using 11 years (1983~1994) observation data of Satellite Laser Ranging (SLR) to the Lageos 1 satellite in the global tracking network,we estimate the second degree gravity field coefficient and tidal parameters. The tidal solutions obtained from SLR and satellite altimetry are used to compute the secular changes in the Moon's orbit elements and the Earth rotation rate in the ecliptic reference system. The SLR derived secular change in the Moon's mean motion caused by the total tidal dissipation is -24.78 arc sec/century 2,agreeing very well with the result ((-24.9±1.0) arc sec/century 2) from the analysis of the lunar laser ranging data. The secular change in the Earth rotation rate caused by the solar and lunar tides is -5.25×10 -22 rad/s 2. Taking into account the non tidal effect of the changes in the Earth rotation rate, the corresponding change in length of day is 1.49 ms/century. This value is consistent with recent astronomical result (1.4 ms/century) of eclipse records since 1620. We also combine the tidal solutions determined by altimetry and SLR to distinguish the dissipation effects of the solid Earth and oceans on the secular variations of the Moon's mean motion and Earth rotation rate.
【Fund】: 国家自然科学基金资助项目 !( 49774 2 2 9) ;; 国家攀登计划资助项目! ( 970 2 310 0 3)
【CateGory Index】: P223
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【References】
Chinese Journal Full-text Database 1 Hits
1 CHEN Hua(School of Physics and Engineering,Zhengzhou University,Zhengzhou 450001,China);An estimation for the effect to the rotation of the earth due to tide[J];College Physics;2006-06
【Co-references】
Chinese Journal Full-text Database 3 Hits
1 Tian Xiaocen(Department of Physics,Beijing Normal Univrsity,Beijing,100875,China);THE ORIGIN OF TIDE[J];COLLEGE PHYSICS;1996-10
2 Zhang Sanhui;HOW THE TIDE DECELERATES THE ROTATION OF THE EARTH[J];;2001-02
3 XIA Yifei; XIAO Naiyuan(Department of Astronomy, Nanjing University, 210093)CHENG Zhuo(Purple Mountain Observatory, The Chinese Academy of Sceiences);A STUDY OF THE SECULAR VARIATION OF THE RATE OF THE EARTH'S ROTATION BY MEANS OF A HAMILTONIAN METHOD[J];CHINESE JOURNAL OF SPACE SCIENCE;1997-03
【Secondary References】
Chinese Journal Full-text Database 2 Hits
1 ZOU Run-li(Changsha Environmental Protection Vocational College,Changsha 410004,China);The earth's differential rotation caused by the electromagnetic torque of the earth's main magnetic field[J];Progress in Geophysics;2012-03
2 LI Qicheng1,2) JING Liping1) REN Changyu2) 1) Institute of Engineering Mechanics,China Earthquake Administration, Harbin, Heilongjiang 150080; 2) Heilongjiang Institute of Science and Technology, Harbin, Heilongjiang 150027;A Tentative Discussion on the External Driving Force of Plate Motion[J];Acta Geoscientica Sinica;2008-02
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