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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O_1和M_2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K_1和S_2波,经初步分析得出约7微伽/毫巴。
In order to study the interaction between ocean tide and solid tide, a preliminary analysis was made on the observed data of four and a half months in Quanzhou, Taiwan using three gravimeters (LaGoste-G type and GS type), and the performance of the instrument And the source of error. The analysis shows that: 1. The results obtained by the LaCoste-G 584 and 589 gravimeters are consistent, and the three instruments are also in good agreement with the observations of the major tidal wave O_1 and M_2 waves with no more than 8 ‰. The tide factor corrected by the Schwartzki diagram and the tide diagram of our country are close to the theoretical model values. However, due to the proximity of Quanzhou to Taiwan, the large margin may reflect the impact of tide in some areas. 2. The error of LaCoste-G gravimeter mainly comes from the change of sensitivity, and should be calibrated regularly on the basic stage. The observation results of GS-207 gravimeter are greatly influenced by air pressure, especially the K_1 and S_2 waves. The preliminary analysis shows about 7 microg / mbar.