| LCR-ET20弹簧型潮汐重力仪观测结果的分析和比较 |
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| 引用本文： | 孙和平 陈晓东 刘 明 周百力. 2002: LCR-ET20弹簧型潮汐重力仪观测结果的分析和比较. 地震学报, 24(5): 510-515. |
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| 作者姓名： | 孙和平 陈晓东 刘明 周百力 |
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| 作者单位： | (中国武汉430077中国科学院测量与地球物理研究所动力大地测量学重点实验室) |
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| 基金项目： | 国家杰出青年基金（49925411），中国科学院知识创新工程项目（KZCXZ-SW-131）共同资助 |
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| 摘 要： | 基于武汉国际重力潮汐基准站LCR-ET20弹簧重力仪潮汐观测资料，利用国际标准的数据预处理和分析方法，采用与GWR型超导重力仪同址观测对比方法，较系统研究了ET20仪器特征以及大气和海洋重力信号．数值结果表明，尽管ET20的观测精度要比超导型重力仪的精度低一个量级，弹簧蠕变性导致的仪器漂移十分大，但该仪器仍获得了与超导重力仪相当的潮汐参数，能有效用于重力场的时间变化观测．
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| 关 键 词： | 弹簧和超导型重力仪& 大气和海洋影响& 仪器特征研究 |
| 文章编号： | 0253-3782(2002)05-0510-06 |
| 修稿时间： | 2002-02-07 |
ANALYSIS AND COMPARISON OF THE TIDAL GRAVITY OBSERVATIONS OBTAINED WITH LCR-ET20 SPRING GRAVIMETER |
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| Sun Heping Chen Xiaodong Liu Ming Zhou Baili. ANALYSIS AND COMPARISON OF THE TIDAL GRAVITY OBSERVATIONS OBTAINED WITH LCR-ET20 SPRING GRAVIMETER[J]. Acta Seismologica Sinica, 2002, 24(5): 510-515 |
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| Authors: | Sun Heping Chen Xiaodong Liu Ming Zhou Baili |
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| Abstract: | Based on the tidal gravity observations recorded with LCR-ET20 spring gravimeter at Wuhan international fundamental tidal gravity station, the characteristics of the ET20 and the atmospheric and oceanic gravity signals are studied systematically by using international standard data pre-processing and analysis methods , and by comparing to those obtained with superconducting gravimeters (SG) at same station. The numerical results show that the identical tidal gravity parameters are obtained with ET20, it can be used effectively to record temporal change of the gravity field, though that the accuracy of the ET20 is one order lower than that of the SG, and also the large drift induced by the spring creep characteristics. |
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| Keywords: | spring and superconducting gravimeters atmospheric and oceanic influence study of the instrument characteristics |
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