气压对重力仪的影响及观测资料的气压改正

INFLUENCE OF BAROMETRIC PRESSURE ON GRAVIMETERS AND CORRECTION TO OBSERVED DATA OF LTWGN

摘要:

本文介绍了C-327、W-1143、W-1210三台重力仪于1984年10月在武汉的气压试验结果,给出了重力段差值的气压改正公式,介绍了兰州-天水-武都重力网测量结果的气压改正概况。

Abstract:

In this paper, the process as wall as the results of the barometrical pressure test performed in Wuhan in Oct. 1984 for the three gravimeters(C-327, w-1143, w-1210)has been given, and the barometrical pressure correction to the observed gravity of the Lanzhou-Tianshui-Wudu Gravity Net (LTWGN)has been estimated. The results of the test for the three gravimeters are k327=0.816, k1143=1.013, k1210=3.434(ugal/mmHq)respectively. Based on the data obtained from the barometric pressure correction, the possible effect of this correction is discussed.