The Greenland Aerogeophysics Project: Airborne Gravity, Topographic and Magnetic Mapping of an Entire Continent
With large encircling mountain ranges, high-altitude glacial cover and a harsh arctic environment, Greenland is one of the most logistically difficult areas in the northern hemisphere to survey by conventional means. Years of effort by the Danish National Survey and Cadastre (KMS) have produced good quality gravity surveys of some coastal areas (e.g. Forsberg, 1986). On the other hand, except for a few isolated lines and small areal surveys, gravity data is almost totally lacking over the interior of Greenland. Satellite altimetry from SEASAT and GEOSAT provided topographic data over much of the interior of the island south of 72° N (Bindschadler et al., 1989) and this should be extended to the northern interior by ERS-1. However, to be useful for studies of the time variation of the glacial ice mass and climatic studies, altimeter biases and other errors in the satellite data must be established from extensive ground-truth data.
KeywordsVertical Acceleration Field Season Naval Research Laboratory Airborne Gravity Radar Altimeter
Unable to display preview. Download preview PDF.
- Bindschadler, R. A., Zwally, H. J., Major, J. A., Brenner, A. C. (1989). Surface topography of the Greenland ice sheet from satellite radar altimetry, NASA SP 503.Google Scholar
- Brozena, J. M., Eskinzes, J. G. and Clamons, J. D. (1986). Hardware design for a fixed-wing airborne gravity measurement system, NRL Rep. 9000, Nav. Res. Lab., Wash. D.C., USA.Google Scholar
- Forsberg, R., (1986). Gravity measurements in Jameson Land and neighbouring parts of East Greenland, Meddelelser om Grönland: Geoscience 15.Google Scholar
- Landau, H., (1988). Zur nutzung des Global Positioning Systems in geodasie and geodynamik: modelbildung, software-entwicklung und analyse, Ph. D. Thesis, FAF Univ. of Munich, Germany.Google Scholar
- Mader, G. L., (1990). Ambiguity function techniques for GPS phase initialization and kinematic solutions, Eos Trans. Am. Geophys. Un. 71, 484.Google Scholar
- Mader, G. L., Schenewerk, M. S. and Chin, M. M. (1990). OMNI 1.00 user’s guide, NGS Rep., NOAA, Rockville, MD, USA.Google Scholar
- Peters, M. F., Brozena, J. M. and Clamons, J. D. (1987). Software design for an airborne gravity measurement system, NRLRep., 9049, Nav. Res. Lab., Wash. D.C., USA.Google Scholar