| LCR-G型重力仪仪器参数的时变特征 |
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| 引用本文： | 孙少安,项爱民,吴维日.LCR-G型重力仪仪器参数的时变特征[J].大地测量与地球动力学,2002,22(2):101-105. |
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| 作者姓名： | 孙少安 项爱民 吴维日 |
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| 作者单位： | 1. 中国地震局地震研究所,武汉,430071
2. 中国地震局厦门地震勘测研究中心,厦门,361021 |
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| 基金项目： | 地震科学联合基金 (1970 75 )资助课题 |
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| 摘 要： | 采用区域适定法对LCR－G型重力仪的仪器参数进行适时标定。对标定结果的分析表明：（1）区域适定法标定结果与基线标定结果精度相当；（2）重力仪的线性项参数呈现随时间的趋势性下降和非线性。采用区域适定解校正后的线性项参数处理区域重力网的观测资料，不仅能有效地削弱系统误差，而且可提高重力仪检测地震信息的能力。
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| 关 键 词： | LCR－G型重力仪 仪器参数 区域适定解 时变特征 标定 地震信号 |
| 文章编号： | 1671-5942(2002)02-0101-05 |
| 修稿时间： | 2001年9月17日 |
TIME-VARYING CHARACTERISTICS OF LCR-G GRAVIMETER PARAMETERS |
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| Sun Shaoan\\{\}\ Xiang Aimin\\{\} and Wu Weiri\\{\} Institute of Seismology,CSB,Wuhan\ Xiamen Research Center of Seismic Exploration,CSB,Xiamen\.TIME-VARYING CHARACTERISTICS OF LCR-G GRAVIMETER PARAMETERS[J].Journal of Geodesy and Geodynamics,2002,22(2):101-105. |
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| Authors: | Sun Shaoan\\{\}\ Xiang Aimin\\{\} and Wu Weiri\\{\} Institute of Seismology CSB Wuhan\ Xiamen Research Center of Seismic Exploration CSB Xiamen\ |
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| Affiliation: | Sun Shaoan\+\{1)\}\ Xiang Aimin\+\{1)\} and Wu Weiri\+\{2)\} 1)Institute of Seismology,CSB,Wuhan\ 430071 2)Xiamen Research Center of Seismic Exploration,CSB,Xiamen\ 361021 |
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| Abstract: | The regional timely calibration method is used for calibrating the parameters of LaCoste&Romberg model G (LCR-G) gravimeter in good time. The analysis of calibration results shows that: (1) The calibration results by regional timely calibration method and by baseline are about equal in accuracy. (2) The parameters in linear term parameters of gravimeter tend to nonlinearly decrease when time increases. If the parameters in linear term corrected by regional timely calibration solutions are used to process the observations from regional gravity network,not only the system errors in the observations would be validly weakened but also the gravimeter's ability to detect the earthquake information would be enhanced. |
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| Keywords: | gravimeter parameter of instrument regional timely calibration solutions time varying characteristic |
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