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Abstract

Summary

In recent decades, numerous methods for the automatic interpretation of potential fields have been developed. Many of the methods rely on the calculation of high order vertical derivatives which can be unstable unless the input data have a very high signal to noise ratio. In particular, those methods which allow the estimation of the depth to anomalous buried sources without a priori structural index information commonly require 3rd high-order vertical derivatives which are problematic.

The Integrated Second Vertical Derivative (ISVD) method ( ) has previously been shown to provide more stable calculation of the vertical derivative of gravity or magnetic fields. We have extended this method to the calculation of third vertical derivatives with the addition of a space domain second vertical derivative operator. We demonstrate results, from both synthetic magnetic data and real gravity data, which show improved signal to noise compared to conventional FFT methods. We anticipate this approach would significantly improve depth estimation from potential fields data, as well as providing cleaner derivative maps for qualitative interpretation.

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/content/papers/10.3997/2214-4609.201412755
2015-06-01
2024-04-27

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Improved High Order Vertical Derivatives of Potential Field Data - Extending the ISVD Method
Conference Proceedings 2015, 1 (2015); https://doi.org/10.3997/2214-4609.201412755
/content/papers/10.3997/2214-4609.201412755
/content/papers/10.3997/2214-4609.201412755
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