利用2009年日全食的精细重力观测探寻“引力异常”

发布时间：2018-08-14 16:52

【摘要】：日全食期间在是否存在"引力异常"现象是一个关系到引力本质的重大问题,也是一个十分具有现实意义的科学问题.近一个世纪来,许多科学工作者作了大量的观测和实验,研究日全食期间的"引力异常"现象.肯定的、否定的结果并存,更多的是难以确定的结果.在学习、总结和发展了前人工作的基础之上,本文利用7台LaCoste-Romberg重力仪和1台SG-053超导重力仪,对2009年7月22日日全食期间的重力变化进行了精细的观测.研究利用了目前最好的观测环境和观测仪器,无论观测规模还是观测质量在近百年来日全食的重力观测研究中都是首屈一指的.在经过详细的数据处理和图像分析后,可以确定,日全食期间不存在现有观测能力之上的引力异常,以往发现的异常现象受剧烈的气象变化影响可能性极大.另外,在处理重力观测数据时,本文合理的利用了最小二乘多项式拟合法去除理论潮汐值,使计算得以简化,结论更加可靠.
[Abstract]:The existence of "gravitational anomaly" during the total solar eclipse is not only a major problem related to the nature of gravity, but also a scientific issue of great practical significance. In the past century, many scientists have made a lot of observations and experiments to study the phenomenon of "gravitational anomaly" during the total solar eclipse. Yes, negative results coexist, more difficult to determine the results. On the basis of studying, summarizing and developing the previous work, seven LaCoste-Romberg gravimeters and one SG-053 superconducting gravimeter are used to observe the gravity variation during the total solar eclipse on July 22, 2009. The best observation environment and instruments have been used in the research. Both the observation scale and the observed mass are the most important in the gravity observation of the total solar eclipse in the last hundred years. After detailed data processing and image analysis, it can be determined that there is no gravitational anomaly above the existing observational capacity during the total solar eclipse, and that the anomalies discovered in the past are likely to be affected by severe meteorological changes. In addition, in dealing with the gravity observation data, the least square polynomial fitting method is reasonably used to remove the theoretical tidal value, so that the calculation can be simplified, and the conclusion is more reliable.
【作者单位】：中国科学院地质与地球物理研究所;中国科学院研究生院;中国科学院国家天文台;中国地震局地球物理研究所;
【基金】：国家自然科学基金(40874014)项目资助
【分类号】：P182.27

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