Refined calculation of the vertical gradient in an airborne gravity survey

被引：2

作者：

Koneshov V.N. ^{[1
]}

Abramov D.V. ^{[1
]}

Koneshov I.V. ^{[1
]}

机构：

[1] Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow

来源：

Gyroscopy and Navigation | 2011年 / 2卷 / 2期

关键词：

Vertical Gradient; Bias Error; Normal Gravity; Gravity Survey; Elevation Correction;

D O I：

10.1134/S2075108711020039

中图分类号：

学科分类号：

摘要：

When processing the results of an airborne gravity survey in the Arctic at flight heights of 2000 to 3000 m, the authors encountered a situation where the free-air gravity anomaly exceeded the values taken from the anomaly map. The formula for the calculation of the vertical gradient as a function of latitude has been refined. The tentative calculations reported in the paper also indicate that the free-air gravity anomaly above mountainous areas contains additional positive systematic components, since only the effect of the vertical gradient of the normal gravity is taken into account here. The flight height should be held constant during the survey; otherwise, it would be required to consider additional bias errors for different flights. © Pleiades Publishing, Ltd., 2011.

引用

页码：82 / 83

页数：1

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