Abstract
Satellite laser ranging (SLR) observations of geodetic satellites (Degnan, 1993) have long been used to study the temporal variations of the Earth’s external potential through the long-period orbital perturbations they produce (Yoder et al., 1983; Rubincam, 1984; Cheng et al., 1989; Tapley et al., 1993; Gegout and Cazenave, 1993; Nerem et al., 1993; Chao and Eanes, 1995; Nerem and Klosko, 1995.) Secular and long period variations in the zonal Stokes coefficients and nearly diurnal and semidiurnal tidal variations in the order 1 and 2 coefficients can be monitored with this approach. In this paper we analyze SLR observations of Lageos-1 and Starlette and present new results for constraints on the secular and 18.6-year variations in the zonal harmonics. These results provide important information for improving geophysical models of glacial rebound, ice-sheet changes, and mantle anelasticity.
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Bettadpur, S. and Eanes, R. (1994). Geographical representation of radial orbit perturbations due to ocean tides: implications for satellite altimetry, J. Geophys. Res., 99(C12), 24883–24894.
Cartwright, D. and Edden, A. (1973). Corrected tables of tidal harmonics, Geophys. J. R. Astr. Soc., 33, 253–264.
Cartwright, D. and Tayler, R. (1971). New computations of the tide-generating potential, Geophys. J. R. Astr. Soc., 23, 45–74.
Cartwright, D. and Tayler, R. (1971). New computations of the tide-generating potential, Geophys. J. R. Astr. Soc., 23, 45–74.
Cheng, M., Eanes, R., Shum, C., Schutz, B. and Tapley, B. (1989). Temporal variations in low degree zonal harmonics from Starlette orbit analysis, Geophys. Res. Lett., 16(5), 393–396.
Cheng, M., Eanes, R. and Tapley, B. (1992). Tidal deceleration of the Moon’s mean motion, Geophys. J. Int., 108, 401–409.
Degnan, J. (1993). Millimeter accuracy satellite laser ranging: a review, Contributions of Space Geodesy to Geodynamics: Technology, Geodynamics Series 25, 133–162, AGU, Washington, DC.
Douglas, B., Klosko, S., Marsh, J. and Williamson, R. (1974). Tidal parameters from the variation of inclination of Geos-1 and Geos-2, Celestial Mech., 10, 165–178.
Eanes, R., Tapley, B. and Schutz, B. (1981). Earth and ocean tide effects on Lageos and Starlette, Proceedings of the Ninth International Symposium of Earth Tides, J.T. Kuo, Ed., E. Schweizerbart’sche Verlagsbuchhandlung.
Eanes, R. (1995). A study of temporal variations in Earth’s gravitational field using Lageos-1 laser range observations, Doctoral Dissertation, University of Texas at Austin.
Felsentreger, T., Marsh, J. and Williamson, R. (1978). Tidal perturbations on the satellite 1967–92A, J. Geophys. Res., 83(B4), 1837–1842.
Gegout, P. and Cazenave, A. (1993). Temporal variations of the Earth’s gravity field for 1985–1989 derived from Lageos, Geophys. J. Int., 114, 347–359.
Goad, C. and Douglas, B. (1978). Lunar tidal acceleration obtained from satellite-derived ocean tide parameters, J. Geophys. Res., 96(B5), 2306–2310.
Lambeck, K., Cazenave, A. and Balmino, G. (1974). Solid earth and ocean tides estimated from satellite orbit analyses, Rev. Geophys. Space Phys., 12, 421–434.
Lambeck, K. (1977). Tidal dissipation in the oceans: Astronomical, geophysical and oceanographic consequences, Phil. Trans. R. Soc. London, 287(1347), 545–594.
Lambeck, K. and Nakiboglu, S. (1983). Long period Love numbers and their frequency dependence due to dispersion effects, Geophys. Res. Lett., 10, 857–860.
Martin, C. and Rubincam, D. (1995). Effects of Earth albedo on the Lageos-1 satellite, J. Geophys. Res., submitted.
McCarthy, D. ed. (1992). IERS standards (1992), IERS Technical Note 13, Observatoire de Paris, Paris.
Métris, G., Vokrouhlicky, D., Ries, J. and Eanes, R., (1995). Non-gravitational phenomena and the LAGEOS eccentricity excitations, J. Geophys. Res., in preparation.
Merriam, J. (1985). Lageos and UT measurements of long-period earth tides and mantle Q, J. Geophys. Res., 90(B11), 9423–9430.
Nerem, R. and Klosko, S. (1995). Secular variations of the earth’s gravitational field determined from satellite laser ranging, Geophys. Res. Lett., submitted.
Nerem, R., Chao, B., Au, A., Chan, J., Klosko, S., Pavlis, N. and Williamson, R., (1993). Time variations of the Earth’s gravitational field from satellite laser ranging to Lageos, Geophys. Res. Lett., 20(7), 595–598.
Ray, R. and Cartwright, D. (1994). Satellite altimeter observations of the Mf and Mm ocean tides, with simultaneous orbit corrections, Gravimetry and Space Techniques Applied to Geodynamics and Ocean Dynamics, Geophysical Monograph 82, IUGG Volume 17, 69–78.
Rubincam, D. (1984). Postglacial rebound observed by Lageos and the effective viscosity of the lower mantle, J. Geophys. Res, 89, 1077–1087.
Tapley, B., Schutz, B., Eanes, R., Ries, J. and Watkins, M. (1993). Lageos laser ranging contributions to geodynamics, geodesy, and orbital dynamics, Contributions of Space Geodesy to Geodynamics: Earth Dynamics, Geodynamics Series 24, 147–174, AGU, Washington, DC.
Wahr, J. (1981). Body tides on an elliptical, rotating, elastic and oceanless earth, Geophys. J. R. Astr. Soc., 64, 677–703.
Wahr, J. and Bergen, Z. (1986). The effects of mantle anelasticity on nutations, earth tides, and tidal variations in rotation rate, Geophys. J. R. Astr. Soc., 87, 633–668.
Yoder, C., Williams, J., Dickey, J., Schutz, B., Eanes, R. and Tapley, B. (1983). Secular variations of Earth’s gravitational harmonic J2 coefficient from Lageos and non-tidal acceleration of Earth rotation, Nature, 303, 757.
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© 1996 Springer-Verlag Berlin Heidelberg
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Eanes, R.J., Bettadpur, S.V. (1996). Temporal Variability of Earth’s Gravitational Field from Satellite Laser Ranging. In: Rapp, R.H., Cazenave, A.A., Nerem, R.S. (eds) Global Gravity Field and Its Temporal Variations. International Association of Geodesy Symposia, vol 116. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-61140-7_4
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DOI: https://doi.org/10.1007/978-3-642-61140-7_4
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