A global experimental model for gravity tides of the Earth
文献类型：期刊论文
| 作者 | Xu, J. Q. ; Sun, H. P. ; Ducarme, B. |
| 刊名 | Journal of Geodynamics
 |
| 出版日期 | 2004 |
| 期号 | 3-5页码:293-306 |
| 中文摘要 | The long-term, continuous and high-quality tidal gravity data, recorded with the superconducting gravimeters (SGs) at 19 stations in the Global Geodynamics Project (GGP), were simultaneously used to investigate the global pattern of the tidal gravity variations. The atmospheric effects were removed from the gravity observations by using the simultaneous pressure records at the stations. A total of six global co-tidal models were employed to remove the loading effects of oceanic tides. The resonance parameters of the Earth's free core nutation (FCN), as well as the spheroidal constant components in the gravimetric factors of waves O-1 and M-2, were accurately retrieved. As a result, a global experimental model for gravity tides (GEMGT) was developed, considering the nearly diurnal resonance and the latitude-dependence of the gravimetric amplitude factors. The final results indicate that the mean discrepancy of the four main tidal waves (i.e. O-1, K-1, M-2 and S-2) between the GEMGT and SG observations is less than 0.2% on average. The GEMGT is in good agreement with the theoretical models based on the inelastic non-hydrostatic equilibrium Earth models [Dehant, V., Defraigne, P., Wahr, J., 1999. Tides for a convective Earth. J. Geophys. Res. 104, 1035-1058; Mathews, P.M., 2001. Love numbers and gravimetric factor for diurnal tides. J. Geodetic Soc. Jpn. 46 (4), 231-236] with a mean discrepancy less than 0.15%. However, the GEMGT is in closer accordance with the theoretical model given by Mathews [Mathews, P.M., 2001. Love numbers and gravimetric factor for diurnal tides. J. Geodetic Soc. Jpn. 46 (4), 231-236] for the diurnal tides while it is in closer agreement with one obtained by Dehant et al. [Dehant, V., Defraigne, P., Wahr, J., 1999. Tides for a convective Earth. J. Geophys. Res. 104, 1035-1058] for the semi-diurnal tides. (C) 2004 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-11 |
| 源URL | [http://ir.whigg.ac.cn/handle/342008/3406]  |
| 专题 | 测量与地球物理研究所_其他_期刊论文 |
| 推荐引用方式 GB/T 7714 | Xu, J. Q.,Sun, H. P.,Ducarme, B.. A global experimental model for gravity tides of the Earth[J]. Journal of Geodynamics,2004(3-5):293-306. |
| APA | Xu, J. Q.,Sun, H. P.,&Ducarme, B..(2004).A global experimental model for gravity tides of the Earth.Journal of Geodynamics(3-5),293-306. |
| MLA | Xu, J. Q.,et al."A global experimental model for gravity tides of the Earth".Journal of Geodynamics .3-5(2004):293-306. |
入库方式： OAI收割
来源：测量与地球物理研究所
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