Уточнение вертикального градиента при выполнении аэрогравиметрической съемки

Abstract

When processing the results of airborne gravity survey in the Artic at flight heights of 2000 to 3000 m, the authors encountered the conditions when 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 free-air gravity anomaly above the mountainous areas contains additional positive systematic components, since only the effect of the vertical gradient of the normal gravity is taken into account here; and the flight height should be held constant during the survey, otherwise it would be needed to consider additional bias errors for different flights.