Abstract
During the summer af 1978 the Geodetic Institute, Copenhagen, established a regional gravity network as a minor part of the surveying programme, with a combination of barometric, triangulation and doppler-derived heights as vertical control. A preliminary map of bouguer anomalies with 20 mgal contours is shown in fig. 32. Terrain-corrected bouguer anomalies will be avilable at a later stage, when the digital terrain models to be used for plotting height curves on the coming ortho-photo maps are completed. It is important to note that the terrain corrections for some stations in very rugged topography might raise the anomalies considerably, up to the order 10 mgal.
Highlights
The major features of the gravity map are to some extent similar to those observed in the large ice-free areas of West Greenland
Towards the north-east a rapid rise in gravity indicates crustal thinning towards the continental shelf, which is rather narrow in the Wandel Hav
The axis of the deep minimum observed in the Hans Tavsens Iskappe area corresponds fairly well to the deepest part of the Lower Palaeozoic basin, but the main part of the anomaly is probably related to the rise of Greenland, analogous to West Greenland anomalies
Summary
A GRAVITY MAP OF PEARY LAND, NORTH GREENLAND During the summer af 1978 the Geodetic Institute, Copenhagen, established a regional gravity network as a minor part of the surveying programme, with a combination of barometric, triangulation and doppler-derived heights as vertical control.
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