Performance of two Scintrex CG3M instruments at the fourth International Comparison of Absolute Gravimeters
Performance of two Scintrex CG3M instruments at the fourth International Comparison of Absolute Gravimeters
复制标题
两台 Scintrex CG3M 仪器在第四届国际绝对重力仪比较中的性能
DOI：
--
复制
发表时间：
1995
期刊：
影响因子：
--
通讯作者：
M. Diament
中科院分区：
文献类型：
--
作者：
P. Jousset;M. Ruymbeke;S. Bonvalot;M. Diament
1994年5月30日至6月2日，在法国S举行的第四届绝对重力仪国际比对上，对两台Scintrex CG3M重力仪进行了标定，并与其他相对重力仪(拉科斯特-龙贝格重力仪和Scintrex重力仪)进行了比较。参照Laco ste-Romberg测量仪。在国际海洋和气象局进行了三项主要实验。首先，在五点的新基线上校准两台Scintrex CG3M仪器，范围约为8mAl。结果表明，两台Scintrex仪器的测量结果接近于0.05mgAl，即使在嘈杂的地方也是如此，而Scintrex的测量结果与Laco ste-Romberg仪器的结果相似，精度优于0.010mgAl。其次，进行了四点垂直坡度的测量。Scintrex测定仪的结果在0.07 mgAl/m以内，与Laco ste-Romberg测定仪的结果相似，精确度在0.010 mgAl/m左右。第三，在四个相邻点用三个Laco ste-Romberg测定仪和Scintrex测定仪进行了一系列连续记录(每个记录约10分钟)。每台Scintrex仪器的重复性优于0.005mgAl。与LaCoste-Romberg数据相差0.010 mgAl。这些结果证实了Scintrex仪器适用于测量微小的重力差，类似于在活火山上观察到的。
Two Scintrex CG3M gravimeters were calibrated and compared with other relative meters (LaCoste-Romberg and Scintrex meters) at the fourth International Comparison of Absolute Gravimeters at S?vres, France (30 May to 2 June 1994). LaCoste-Romberg meters were used as reference. Three main experiments were carried out at the Bureau International des Poids et Mesures. First, a calibration of the two Scintrex CG3M meters on a new baseline of five points, spanning a range of about 8 mGal. It is shown that both Scintrex meters provide results similar to within 0,005 mGal, even in noisy places, and that Scintrex results are similar to those of LaCoste-Romberg instruments to within an accuracy better than 0,010 mGal. Second, measurements of vertical gradient at four points were carried out. The results for the Scintrex meters lie within 0,007 mGal/m and are similar to those of LaCoste-Romberg meters to within an accuracy of around 0,010 mGal/m. Third, a series of continuous records (each of about 10 minutes) was carried out with three LaCoste-Romberg and the Scintrex meters at four adjacent points. A repeatability of better than 0,005 mGal was obtained for one Scintrex meter. There is a difference of 0,010 mGal with LaCoste-Romberg data. These results confirm that the Scintrex meter is suitable for measuring small gravity differences, similar to those observed on active volcanoes.