Levelling aeromagnetic survey data without the need for tie-lines

White, James C.; Beamish, David. 2015 Levelling aeromagnetic survey data without the need for tie-lines. Geophysical Prospecting, 63 (2). 451-460. 10.1111/1365-2478.12198

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Official URL: http://dx.doi.org/10.1111/1365-2478.12198

Abstract/Summary

A new methodology that levels airborne magnetic data without orthogonal tie-lines is presented in this study. The technique utilizes the low-wavenumber content of the flight-line data to construct a smooth representation of the regional field at a scale appropriate to the line lengths of the survey. Levelling errors are then calculated between the raw flight-line data and the derived regional field through a least squares approach. Minimizing the magnitude of the error, with a first-degree error function, results in significant improvements to the unlevelled data. The technique is tested and demonstrated using three recent airborne surveys.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1111/1365-2478.12198
ISSN:	00168025
Date made live:	22 Dec 2014 15:22 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/509156

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1111/1365-2478.12198

ISSN:

00168025

Date made live:

22 Dec 2014 15:22 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/509156