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Gyroscopy and Navigation

, Volume 2, Issue 2, pp 82–83 | Cite as

Refined calculation of the vertical gradient in an airborne gravity survey

  • V. N. Koneshov
  • D. V. Abramov
  • I. V. Koneshov
Article

Abstract

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.

Keywords

Vertical Gradient Bias Error Normal Gravity Gravity Survey Elevation Correction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • V. N. Koneshov
    • 1
  • D. V. Abramov
    • 1
  • I. V. Koneshov
    • 1
  1. 1.Schmidt Institute of Physics of the EarthRussian Academy of SciencesMoscowRussia

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