Fast combination of satellite and marine gravity data

J. F. Kirby

doi:10.1071/EG997094

ISSN: 0812-3985
E-ISSN: 1834-7533

Fast combination of satellite and marine gravity data
Authors J. F. Kirby^a
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^a School of Surveying and Land Information, Curtin University of Technology, , GPO Box U1987, Perth, , WA, 6001, , Australia, . e-mail:jfk@cage. curtin. edu. au
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 28, Issue 1-2, Mar 1997, p. 94 - 96
DOI: https://doi.org/10.1071/EG997094
- Published online: 01 Mar 1997

Abstract

A new method has been developed that improves upon current methods of heterogeneous gravity data integration, with a much reduced computation time and memory requirement. Gridded datasets of satellite altimeter observations of the geoid height, and of shipboard measurements of the free-air gravity anomaly are combined through an iterated weighted superposition, using the fast Fourier transform for conversion between the datasets.

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1997-03-01

2026-01-17

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References

Dorman, L. M. and Lewis, B. T. R., 1970, Experimental isostasy 1: theory of the determination of the Earth’s isostatic response to a concentrated load: Journal of Geophysical Research 75, 3357-3365.
Heiskanen, W. A. and Moritz, H., 1967, Physical geodesy: W. H. Freeman, San Francisco.
Kearsley, A. H. W., 1985, Towards the optimum evaluation of the inner zone contribution to geoidal heights: Australian Journal of Geodesy, Photogrammetry and Surveying 42, 75-98.
Kirby, J. F. and Hipkin, R. G., in prep. The gridding and combination of heterogeneous gravity data satellite altimetry and marine gravity: submitted to Geophysical Journal International.
Moritz, H., 1980, Advanced physical geodesy: Wichmann, Karlsruhe.
Richardus, P. and Adler, R. K., 1972, Map projections for geodesists, cartographers and geographers: North-Holland, Amsterdam.
Sandwell, D. T., Smith, W. H. F. and Yale, M. M., 1995, Gravity anomaly profiles from ERS-1, Topex and Geosat altimetry: EOS, Transactions of the American Geophysical Union, Spring Meeting 76, S89.
Schwarz, K. P., Sideris, M. G. and Forsberg, R., 1990, The use of FFT techniques in physical geodesy: Geophysical Journal International 100, 485-514.
Sideris, M. G., 1995, Fourier geoid determination with irregular data: Journal of Geodesy 70, 2-12.
Strang van Hees, G., 1990, Stokes formula using fast Fourier techniques: manuscripts geodaetica IS, 235-239.
Tziavos, I. N., 1996, Comparisons of spectral techniques for geoid computations over large regions: Journal of Geodesy 70. 357-373.

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Article Type: Research Article

Keyword(s): Fourier transforms; geoid; gravity anomalies; satellite altimetry

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Fast combination of satellite and marine gravity data

Abstract

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