三峡水库首区重力固体潮观测资料分析
摘要
介绍了中国科学院测量与地球物理研究所的LCR-ET20重力仪和中国地震局地震研究所的DZW-9重力仪在三峡水库首区的重力固体潮比对观测.获得了该地区高精度的重力固体潮潮汐参数,估算了DZW-9重力仪的格值,其值为(-756.06±0.05)×10-8(m.s-2)/V.分析了相应仪器的重力观测残差,数值结果表明DZW-9重力仪的长期漂移具有线性特征,观测精度与LCR-ET20重力仪在同一量级.本文提供的相关结果可为该地区地表和空间大地测量观测提供有效的重力潮汐改正模型.
The comparative observations of the tidal gravity in Three Gorges reservoir area,recorded with the LCR-ET20 gravimeter from Institute of Geodesy and Geophysics,Chinese Academy of Sciences and the DZW-9 gravimeter from Institute of Seismology,China Earthquake Administration,are introduced in the paper.High-accuracy tidal gravity parameters in this area are obtained,and the scale factor of the DZW-9 gravimeter is also estimated at a value of(-756.06±0.05)×10-8(m·s-2)/V.The observed residuals of the corresponding instruments are investigated.Numerical results indicate that the long-term drift of the DZW-9 gravimeter appears a linear characteristic,and the observed accuracy is of the same order comparing with that of the LCR-ET20 gravimeter.The results given in the paper can provide with an effective reference model of the tidal gravity correction to the ground based and space geodesy.
The comparative observations of the tidal gravity in Three Gorges reservoir area,recorded with the LCR-ET20 gravimeter from Institute of Geodesy and Geophysics,Chinese Academy of Sciences and the DZW-9 gravimeter from Institute of Seismology,China Earthquake Administration,are introduced in the paper.High-accuracy tidal gravity parameters in this area are obtained,and the scale factor of the DZW-9 gravimeter is also estimated at a value of(-756.06±0.05)×10-8(m·s-2)/V.The observed residuals of the corresponding instruments are investigated.Numerical results indicate that the long-term drift of the DZW-9 gravimeter appears a linear characteristic,and the observed accuracy is of the same order comparing with that of the LCR-ET20 gravimeter.The results given in the paper can provide with an effective reference model of the tidal gravity correction to the ground based and space geodesy.
引文
陈晓东,孙和平.2002.一种新的重力潮汐数据预处理和分析方法[J].大地测量与地球动力学,22(3):83-87.
陈晓东,孙和平.2003.用GWR-C032超导重力仪观测资料实施对LCR-ET20型重力仪的精密标定[J].测绘学报,32(3):219-223.
丁多文,白世伟,刘泉声,等.1996.三峡库区重力侵蚀特征及其对重要城市地质环境影响评价[J].中国地质大学学报(地球学报),21(1):108-111.
蒋福珍.2003.重力测量在三峡库区形变监测中的作用[J].武汉大学学报(信息科学版),28(6):679-682.
刘明,孙和平,郑少怀,等.2002.基于虚拟仪器的LaCoste-Romberg ET型重力仪数据采集和显示系统[J].电子测量技术,6:38-40.
孙和平,陈晓东,许厚泽,等.2001.GWR超导重力仪潮汐观测标定因子的精密测定[J].地震学报,23(6):651-658.
孙和平,许厚泽,陈武,等.2006.香港地区重力固体潮和海潮负荷特征研究[J].地球物理学报,49(3):724-734.
王秀文,张锦.1991.精密水准测量中地球潮汐改正的实用计算公式及其精度估计[J].山西矿业学院学报,9(1):91-98.
王勇.2003.绝对重力观测的潮汐改正[J].大地测量与地球动力学,23(2):65-68.
邢灿飞,龚凯虹,杜瑞林.2003.长江三峡工程地壳形变监测网络[J].大地测量与地球动力学,23(1):114-118.
许大欣.1998.GPS测站的海洋潮汐改正[J].地壳形变与地震,18(3):32-35.
杨森楠,任建业.1997.长江三峡狮子口重力滑动构造[J].地质学报,71(1):27-35.
张克非,边少锋,陶本藻.1994.三峡水库的建立对库区地球重力场及地壳形变的影响[J].地球物理学报,37(2):260-267.
Boy J P,Chao B F.2003.中国三峡水库蓄水期间随时间变化的重力信号[J].世界地震译丛,(6):42-47.
Becker E,Groten E,陶国祥,等.1990.ET型潮汐重力仪的改进[J].测绘学报,19(3):229-235.
Francis O.1997.Calibration of the C021Superconducting gravimeter in Membach(Belgium)using47days of absolutegravity measurements[C]∥Proc International Association of Geodesy Symposia in Gravity,Geoidand Marine Ge-odesy.Berlin:Springer Verlag,117:212-219.
Tamura Y.1987.Aharmonic development of the tide-generating potential[J].Bulletin d'Information de Marees Terres-tres,99:6813-6855.
Vauterin P.1998.Tsoft:Graphical andinteractive software for the analysis of earth tide data[C]∥Proceedingof13thInternational Symposiumon Earth Tides.Brussels:Royal Observatory of Belgium:481-486.
Wang HS.2000.Surface vertical displacements and level plane changes in the front reservoir area caused by filling theThree Gorges Reservoir[J].J Geophy Res,105(B6):13211-13220.
Wenzel H G.1996.The nanogal software:Earthtide data processing package Eterna3.30[J].Bulletin d'Information deMarees Terrestres,124:9425-9439.
陈晓东,孙和平.2003.用GWR-C032超导重力仪观测资料实施对LCR-ET20型重力仪的精密标定[J].测绘学报,32(3):219-223.
丁多文,白世伟,刘泉声,等.1996.三峡库区重力侵蚀特征及其对重要城市地质环境影响评价[J].中国地质大学学报(地球学报),21(1):108-111.
蒋福珍.2003.重力测量在三峡库区形变监测中的作用[J].武汉大学学报(信息科学版),28(6):679-682.
刘明,孙和平,郑少怀,等.2002.基于虚拟仪器的LaCoste-Romberg ET型重力仪数据采集和显示系统[J].电子测量技术,6:38-40.
孙和平,陈晓东,许厚泽,等.2001.GWR超导重力仪潮汐观测标定因子的精密测定[J].地震学报,23(6):651-658.
孙和平,许厚泽,陈武,等.2006.香港地区重力固体潮和海潮负荷特征研究[J].地球物理学报,49(3):724-734.
王秀文,张锦.1991.精密水准测量中地球潮汐改正的实用计算公式及其精度估计[J].山西矿业学院学报,9(1):91-98.
王勇.2003.绝对重力观测的潮汐改正[J].大地测量与地球动力学,23(2):65-68.
邢灿飞,龚凯虹,杜瑞林.2003.长江三峡工程地壳形变监测网络[J].大地测量与地球动力学,23(1):114-118.
许大欣.1998.GPS测站的海洋潮汐改正[J].地壳形变与地震,18(3):32-35.
杨森楠,任建业.1997.长江三峡狮子口重力滑动构造[J].地质学报,71(1):27-35.
张克非,边少锋,陶本藻.1994.三峡水库的建立对库区地球重力场及地壳形变的影响[J].地球物理学报,37(2):260-267.
Boy J P,Chao B F.2003.中国三峡水库蓄水期间随时间变化的重力信号[J].世界地震译丛,(6):42-47.
Becker E,Groten E,陶国祥,等.1990.ET型潮汐重力仪的改进[J].测绘学报,19(3):229-235.
Francis O.1997.Calibration of the C021Superconducting gravimeter in Membach(Belgium)using47days of absolutegravity measurements[C]∥Proc International Association of Geodesy Symposia in Gravity,Geoidand Marine Ge-odesy.Berlin:Springer Verlag,117:212-219.
Tamura Y.1987.Aharmonic development of the tide-generating potential[J].Bulletin d'Information de Marees Terres-tres,99:6813-6855.
Vauterin P.1998.Tsoft:Graphical andinteractive software for the analysis of earth tide data[C]∥Proceedingof13thInternational Symposiumon Earth Tides.Brussels:Royal Observatory of Belgium:481-486.
Wang HS.2000.Surface vertical displacements and level plane changes in the front reservoir area caused by filling theThree Gorges Reservoir[J].J Geophy Res,105(B6):13211-13220.
Wenzel H G.1996.The nanogal software:Earthtide data processing package Eterna3.30[J].Bulletin d'Information deMarees Terrestres,124:9425-9439.
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