The Effect of Topography and Its Isostatic Compensation on Free Air Gravity Anomalies

摘要

The effect of topography and its isostatic compensation for all 5 degree x 5 degree surface elements was calculated, using the T = 30 km, Airy-Heiskanen local isostatic system, and the available 5 degree x 5 degree mean free air anomalies based on measurements. Measured 5 degree x 5 degree mean free air anomalies on the Altantic Ocean, on the North American Continent, and at its shores were the test areas used for the adjustments. In the test areas, these calculated 5 degree x 5 degree mean free air anomalies represented the measured 5 degree x 5 degree mean free air anomalies so that the standard errors on the oceans were about