1887
Volume 57, Issue 6
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

Terracing is an operator that is applied to potential field data to produce regions of constant field amplitude that are separated by sharp boundaries, as an aid to interpretation. When applied to map data, the boundaries are defined by the zero contour of the 2D Laplacian derivative operator. An improved method is described here that defines the boundaries by the zero contour of the profile curvature. This approach gives superior results because the 2D Laplacian operator is composed only of derivatives in the EW and NS directions, while the profile curvature uses the curvature in the ‘uphill’ direction at each point, whatever that direction may be. The method is demonstrated on gravity data from South Africa. Source code in Matlab format is available from the authors on request.

Loading

Article metrics loading...

/content/journals/10.1111/j.1365-2478.2009.00791.x
2009-05-12
2024-03-29
Loading full text...

Full text loading...

References

  1. BaranovV.1957. A new method for the interpretation of aeromagnetic maps: pseudo‐gravimetric anomalies. Geophysics22, 359–383.
    [Google Scholar]
  2. BlakelyR.J. and SimpsonR.W.1986. Locating edges of source bodies for magnetic or gravity anomalies. Geophysics51, 1494–1498.
    [Google Scholar]
  3. CordellL. and McCaffertyA.E.1989. A terracing operator for physical property mapping with potential field data. Geophysics54, 621–634.
    [Google Scholar]
  4. GonzalezR.C. and WoodsR.E.2002. Digital Image Processing , 2nd edn. Prentice‐Hall.
    [Google Scholar]
  5. MitasovaH. and JarosalavH.1993. Interpolation by regularized spline with tension: II. Application to terrain modeling and surface geometry analysis. Mathematical Geology25, 657–669.
    [Google Scholar]
  6. PhilipsJ.D.1992. TERRACE: A terracing procedure for gridded data, with Fortran programs, and VAX Command Procedure, Unix C‐Shell, and DOS batch file implementations. Department of the interior, US geological survey open file report 92–5.
http://instance.metastore.ingenta.com/content/journals/10.1111/j.1365-2478.2009.00791.x
Loading
/content/journals/10.1111/j.1365-2478.2009.00791.x
Loading

Data & Media loading...

  • Article Type: Research Article

Most Cited This Month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error