2009-07-22湖北地区日全食期间的重力观测  

Gravity Observations During 22 July 2009 Total Solar Eclipse in Hubei Province

作　　者：崔荣花[1] 方剑[1] 王新胜[1] 

机构地区：[1]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,武汉市徐东大街340号430077

出　　处：《武汉大学学报（信息科学版）》2011年第11期1332-1335,共4页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(0811291029)

摘　　要：利用武汉市九峰站CWR C032型超导重力仪和沙洋地区的Lacost G型、ET型弹簧重力仪,对2009-07-22发生在长江沿线的日全食进行了重力观测。首先,对超导重力仪在日全食期间的观测数据扣除重力固体潮汐及气压影响后,分析其幅度变化,没有发现日全食期间及前后出现幅度异常的"重力谷"。同时,对G型和ET型重力仪观测数据采用数字滤波器法及多项式拟合重力潮汐法扣除固体潮汐影响后,同样也没有发现日全食期间及前后出现幅度较大的异常。重力实测数据处理和分析表明,2009年日全食期间并未发现"重力谷"现象。Gravity observations have been made using superconducting gravimeter of Jiufeng observation station and LCR-G and LCR-ET gravimeters of Shayang County,during total solar eclipse,which took place along Yangzi River on July 22,2009.We firstly analyzed the amplitude change of gravity residues,which deducted influences of solid Earth tide and pressure.No ＂gravity anomaly valleys＂ of abnormal amplitude were observed from the gravity residuals.The gravity residues of LCR-G same with that of LCR-ET gravimeters,whose solid earth tide influences were deducted by methods of digital filter and polynomial fitting.The processing of observed gravity data and analysis proved that no gravity anomaly valleys were found during the total solar eclipse of 2009.

关 键 词：日全食 重力观测 重力谷 多项式拟合法 

分 类 号：P223[天文地球—大地测量学与测量工程]