| 泉州重力潮汐观测的分析 |
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| 引用本文： | 毛慧琴,杨怀冰,李仲.泉州重力潮汐观测的分析[J].地球物理学报,1984,27(5):446-451. |
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| 作者姓名： | 毛慧琴 杨怀冰 李仲 |
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| 作者单位： | 1. 中国科学院测量与地球物理研究所;
2. 国家地震局泉州地震台 |
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| 摘 要： | 为了研究海潮与固体潮的相互作用,对近海的泉州台用三台重力仪（二台LaGoste-G型、一台GS型）为期四个半月的观测资料进行了初步分析,探讨了仪器的性能及误差来源。由分析得出: 1.由LaCoste-G型584和589重力仪观测得到的结果是一致的,三台仪器对于主要潮波O1和M2波的观测结果也相符较好,其互差不超过8‰。利用Schwiderski图和我国等潮图作海潮改正后的潮汐因子接近理论模型值。但由于泉州为近海台,大的余差可能反映了局部地区海潮的影响。 2.LaCoste-G型重力仪的误差主要来自灵敏度的变化,应在基本台上作定期标定。 3.GS-207重力仪的观测结果受气压的影响较大,特别是K1和S2波,经初步分析得出约7微伽/毫巴。
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| 关 键 词： | 重力潮汐观测 重力仪 等潮图 海潮改正 泉州 微伽 潮汐因子 基本台 观测结果 G型 |
| 收稿时间： | 1983-01-03 |
ON TIDAL GRAVITY ANALYSIS AT QUANZHOU |
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| MAO HUI-QIN,YANG HUAI-BIN,LI ZHONG.ON TIDAL GRAVITY ANALYSIS AT QUANZHOU[J].Chinese Journal of Geophysics,1984,27(5):446-451. |
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| Authors: | MAO HUI-QIN YANG HUAI-BIN LI ZHONG |
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| Institution: | 1. Institute of Geodesy and Geophysics, Academia Sinica;
2. Quanzhou Seismological Station, State Seismological Bureau |
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| Abstract: | In order to investigate interaction between bodily tides and oceanic tides, the gravity tides observed from three instruments （two LaCoste-G gravimeters No. 584, 589 and an Askania GS-12 gravimeter No. 207） during a period of about four and a half months at the coast station-Quanzhou were analysed, and instruments' property and the source of errers discussed. We have obtained the following conclusions:1. The observations obtained from LaCoste-G No. 584 and No. 589 instruments are compatible, and the results of the main components O1,M2 from three instruments are in good agreement, the difference being no more than 8‰. The tidal factors corrected by oceanic tides with Schwiderski map and Chinese oceanic map are close to the values of theoretical model. As the observation station of Quanzhou is a coastal station, big residuals reflect the ocean tides effect of local areas.2. The errors of LaCoste-G gravimeter are mostly from the variation of the sensitivity. It is necessary to make periodic calibration at standard station.3. The effect of atmospheric pressure on the data recorded by Askania GS No. 207 is conspicuous especially on K1 and S2 waves. It is about 7 μgal/mb. |
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