1887
Volume 29, Issue 3-4
  • ISSN: 0812-3985
  • E-ISSN: 1834-7533

Abstract

Regional compilations of gridded geophysical data from disparate individual surveys are playing an ever more important role in resource exploration. A key processing step in such compilations is the merging of overlapping grids to create a single grid. Traditional methods of connecting grids together can produce smooth final products but the process is time-consuming and has difficulty with differences that involve both long and short wavelength errors. A novel, completely automated method addresses several main challenges, such as determining how to select a path along which overlapping grids can be joined. The technique uses Fourier analysis to deconstruct the errors along a suture path, into a sum of functions with different spatial wavelengths, and applies corrections that propagate smoothly into the grids by a distance proportional to the individual wavelengths. The result is an almost seamless grid that minimises distortion from the correction process.

© 1998 ASEG
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1998-09-01
2026-01-19

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References

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  8. Reeves. C.V., and Erren, H., 1994, AAIME, Aeromagnetics of Arabia, India and the Middle East, International Institute for Aerospace Survey and Earth Sciences, unpublished.
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  • Article Type: Research Article

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