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| 1 | 基于全球超导重力仪观测研究海潮和固体潮模型的适定性显示文摘利用国际地球动力学合作观测网络中20个台站22个高精度重力潮汐观测系列综合研究了目前使用的海潮和固体潮模型的适定性.对原始观测数据实施仔细的预处理,利用国际标准算法计算了潮汐重力参数.基于负荷理论和不同全球海潮模型获得了8个主波的重力负荷矢量,用二维平面插值技术获得了14个小波的负荷改正值.顾及不同潮波振幅特征,提出了计算台站平均观测残差和剩余残差矢量的“非等权均值法”,分析了海潮负荷改正的有效性和振幅因子与理论模型间的差异,同时还讨论了仪器标定问题.获得了经海潮负荷改正后全球各台站平均潮汐重力参数,结果说明观测与理论模型间的差异小于0.3%,最大仪器标定误差不超过0.5%.另外文章还用地表重力实测数据证实了Mathews理论中相对于周日O1波而言,K1波相位滞后略呈正值的结论. | 孙和平 B.Ducarme 许厚泽 L.Vandercoilden 徐建桥 周江存 | 2005 | 中国科学(D辑)2005,35,7: | 28 |
| 2 | Detection of the translational oscillations of the Earth's solid inner core based on the international superconducting gravimeter observations显示文摘Based on the 21 series of the high precision tidal gravity observations recorded using superconducting gravimeters (SG) at 14 stations distributed globally (in to-tally about 86 years), the translational oscillations of the Earth抯 solid inner core (ESIC) is detected in this paper. All observations are divided into two groups with G-Ⅰ group (8 relatively longer observational series) and G-Ⅱ group (13 relatively shorter observational series). The detailed correc-tions to minute original observations for each station are carried out, the error data due to the earthquakes, power supply impulses and some perturbations as change in at-mospheric pressure and so on are carefully deleted for the first step, the gravity residuals are obtained after removing further synthetic tidal gravity signals. The Fast Fourier Transform analysis is carried out for each residual series, the estimations of the product spectral densities in the sub-tidal band are obtained by using a multi-station staking technique. The 8 common peaks are found after further removing the remaining frequency dependent pressure signals. The eigen-periods, quality factors and resonant strengths for these peaks are simulated. The numerical results show that the discrepancies of the eigenperiods for 3 of 8 peaks, compared to those of theoretical computation given by Smith, are only 0.4%, -0.4% and 1.0%. This coincidence signifies that the dynamical phenomenon of the Earths solid inner core can be detected by using high precision ground gravity observations. The reliability of the numerical computation is also checked, the spectral peak splitting phenomenon induced by Earths rotation and ellipticity is preliminary discussed in this paper. | SUNHeping XUJianqiao B.Ducarme | 2004 | Chinese Science Bulletin2004,49,11: | 15 |
| 3 | 中、比、法三国超导重力仪潮汐观测资料综合对比分析与研究显示文摘综合分析了中国武汉、比利时布鲁塞尔和法国斯特拉斯堡 3台超导重力仪近 2 7a的长周期序列观测数据 ,获得了不同台站观测资料的质量因素 ,精密测定了地球潮汐常数 .文章对用不同引潮位展开、考虑加权滤波、做气压改正、删除错误数据以及规定数据段均方差上限等问题进行了讨论 .利用全球海潮模型对分析结果进行了负荷改正 ,研究了观测残差和气压变化间的相关性 ,在时间和频率域内测定了大气重力导纳值 ,并研究了导致与标准地球潮汐模型间差异的可能原因 . | 孙和平 许厚泽 B.Ducarme J.Hinderer | 1998 | 科学通报1998,43,13: | 13 |
| 4 | 基于全球超导重力仪观测资料考虑液核近周日共振效应的固体潮实验模型显示文摘基于全球地球动力学合作观测网络20个台站28个系列的高精度每分钟高密度采样超导重力仪观测数据, 精密测定了地球液核近周日共振参数(包括共振周期, 共振强度和品质因子). 研究了共振周期与理论值间的差异, 用重力手段证明了真实地球液核动力学扁率要比流体静力平衡假设下获得的动力学扁率大约5%的重要结论. 构制了考虑液核共振效应的重力固体潮汐实验模型, 3个实验模型间的差异小于0.1%, 与目前广泛使用的Dehant(1999)和Mathews(2001)理论模型间的最大差异仅为0.4%, 可为全球固体潮、大地测量研究和空间技术等提供最新的重力潮汐实测参考模型. | 孙和平 徐建桥 B.Ducarme | 2003 | 科学通报2003,48,6: | 13 |
| 5 | 超导重力技术在探讨核幔边界黏性特征中的初步应用显示文摘旋转椭球型地球的固体地幔与液态地核间相互作用而产生的逆向本征模通常称之为地球自由核章动,自由核章动的品质因子(Q值)能有效反映核幔边界层能量耗散特征,与核幔边界的黏滞度密切相关.本文首次利用全球地球动力学计划网络23个台站27组高密度采样的高精度超导重力仪器观测数据,采用迭积技术,确定了自由核章动参数Q值,进而计算了核幔边界的黏滞系数.数值结果说明获得的核幔边界动力学黏滞系数达到10^3 Pa·s量级,与加拿大科学家Smylie等利用VLBI观测资料获得的最新结果一致,这说明重力技术是有效应用于研究地球深内部结构的重要手段之一. | 孙和平 崔小明 徐建桥 B.Ducarme 刘明波 周江存 | 2009 | 地球物理学报2009,52,3: | 10 |
| 6 | Experimental earth tidal models in considering nearly diurnal free wobble of the Earth's liquid core显示文摘Based on the 28 series of the high precision and high minute sampling tidal gravity observations at 20 stations in Global Geodynamics Project (GGP) network, the resonant parameters of the Earth's nearly diurnal free wobble (including the eigenperiods, resonant strengths and quality factots) are precisely determined. The discrepancy of the eigenperiod between observed and theoretical values is studied, the important conclusion that the real dynamic ellipticity of the liquid core is about 5% larger than the one under the static equilibrium assumption is approved by using our gravity technique. The experimental Earth's tidal gravity models with considering the nearly diurnal free wobble of the Earth's liquid core are constructed in this study. The numerical results show that the difference among three experimental models is less than 0.1%, and the largest discrepancy compared to those widely used nowdays given by Dehant (1999) and Mathews (2001) is only about 0.4%. It can provide with the most recent real experimental tidal gravity models for the global study of the Earth's tides, geodesy and space techniques and so on. | SUNHeping XUJianqiao B.Ducarme | 2003 | Chinese Science Bulletin2003,48,9: | 9 |
| 7 | 基于国际超导重力仪观测资料检测地球固态内核的平动振荡显示文摘基于全球分布的14个台站GWR超导重力仪21个高精度潮汐重力观测系列(约86年),检测了地球固态内核平动振荡现象.将观测数据分成G-Ⅰ组(8个较长观测系列)和G-Ⅱ组(13个较短观测系列).首先对各台站每分钟原始观测数据实施仔细修正,消除由地震和电脉冲等导致的错误数据和大气变化等干扰影响,再扣除理论潮汐重力信号获得观测残差.然后分别对各残差系列做Fourier谱分析,最后基于多台站资料迭积技术,求得亚潮汐频段上的积谱密度估计.在进一步消去剩余气压效应后,检测到8个公共谱峰.计算了这些谱峰的本征周期、品质因子和共振强度.数值结果说明其中3个公共谱峰的本征周期与Smith理论值间的最大差异小于1.0%,这种一致性说明了利用高精度地表重力观测可检测到固态内核的动力学现象.还检验了数值计算的可靠性,对地球自转和椭率可能导致的谱峰分裂现象进行了简要的探讨. | 孙和平 徐建桥 B.Ducarme | 2004 | 科学通报2004,49,8: | 2 |
| 8 | 中国固体潮观测研究显示文摘 | P.Melchior 方俊 B.Ducarme 许厚泽 M.Van Ruymbeke 李瑞浩 C.Poitevin 陈冬生 | 1985 | 地球物理学报1985,,02: | 1 |
| 9 | 中国固体潮观测研究显示文摘 | P.Melchior 方俊 B.Ducarme 许厚泽 M.Van Ruymbeke 李瑞浩 C.Poitevin 陈冬生 | 1985 | 地球物理学报1985,,02: | 1 |
| 10 | 中国固体潮观测研究显示文摘 | P.Melchior 方俊 B.Ducarme 许厚泽 M.Van Ruymbeke 李瑞浩 C.Poitevin 陈冬生 | 1985 | 地球物理学报1985,,02: | 1 |
| 11 | 中国固体潮观测研究显示文摘 | P.Melchior 方俊 B.Ducarme 许厚泽 M.Van Ruymbeke 李瑞浩 C.Poitevin 陈冬生 | 1985 | 地球物理学报1985,,02: | 1 |
| 12 | 中国固体潮观测研究显示文摘 | P.Melchior 方俊 B.Ducarme 许厚泽 M.Van Ruymbeke 李瑞浩 C.Poitevin 陈冬生 | 1985 | 地球物理学报1985,,02: | 1 |
| 13 | 中国固体潮观测研究显示文摘 | P.Melchior 方俊 B.Ducarme 许厚泽 M.Van Ruymbeke 李瑞浩 C.Poitevin 陈冬生 | 1985 | 地球物理学报1985,,02: | 1 |
| 14 | 中国固体潮观测研究显示文摘 | P.Melchior 方俊 B.Ducarme 许厚泽 M.Van Ruymbeke 李瑞浩 C.Poitevin 陈冬生 | 1985 | 地球物理学报1985,,02: | 1 |