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Publications Influence

3-D inversion of magnetic data

- Y. Li, D. Oldenburg
- Computer Science
- 1 April 1996

TLDR

692 42

Estimating depth of investigation in DC resistivity and IP surveys

- D. Oldenburg, Y. Li
- Geology
- 1 April 1999

In this paper, the term “depth of investigation” refers generically to the depth below which surface data are insensitive to the value of the physical property of the earth. Estimates of this depth… Expand

459 35- PDF

3-D inversion of gravity data

- Y. Li, D. Oldenburg
- Mathematics
- 1995

We present two methods for inverting surface gravity data to recover a 3-D distribution of density contrast. In the first method, we transform the gravity data into pseudomagnetic data via Poisson's… Expand

258 29- PDF

3-D inversion of gravity data

- Y. Li, D. Oldenburg
- Mathematics
- 1 February 1998

We present two methods for inverting surface gravity data to recover a 3-D distribution of density contrast. In the first method, we transform the gravity data into pseudomagnetic data via Poisson's… Expand

528 24

The inversion and interpretation of gravity anomalies

- D. Oldenburg
- Geology
- 1 August 1974

A rearrangement of the formula used for the rapid calculation of the gravitational anomaly caused by a two‐dimensional uneven layer of material (Parker, 1972) leads to an iterative procedure for… Expand

451 23

NON-LINEAR INVERSION USING GENERAL MEASURES OF DATA MISFIT AND MODEL STRUCTURE

- C. Farquharson, D. Oldenburg
- Mathematics, Geography
- 1 July 1998

We investigate the use of general, non-l2 measures of data misfit and model structure in the solution of the non-linear inverse problem. Of particular interest are robust measures of data misfit, and… Expand

320 17- PDF

3-D Inversion of Magnetic Data

- Y. Li, D. Oldenburg
- Geology
- 1993

We present a method for inverting surface magnetic data to recover 3-D susceptibility models. To allow the maximum flexibility for the model to represent geologically realistic structures, we… Expand

105 16- PDF

A Discrimination Algorithm for UXO Using Time Domain Electromagnetics

- L. Pasion, D. Oldenburg
- Physics
- 1 June 2001

An assumption is made that the Time Domain Electromagnetic (TEM) response of a buried axisymmetric metallic object can be modelled as the sum of two dipoles centered at the midpoint of the body. The… Expand

188 14

A comparison of automatic techniques for estimating the regularization parameter in non-linear inverse problems

- C. Farquharson, D. Oldenburg
- Mathematics
- 1 March 2004

SUMMARY Two automatic ways of estimating the regularization parameter in underdetermined, minimumstructure-type solutions to non-linear inverse problems are compared: the generalized crossvalidation… Expand

206 14- PDF

METHODS FOR CALCULATING FRÉCHET DERIVATIVES AND SENSITIVITIES FOR THE NON‐LINEAR INVERSE PROBLEM: A COMPARATIVE STUDY1

- P. R. McGillivray, D. Oldenburg
- Geology
- 1 July 1990

A fundamental step in the solution of most non-linear inverse problems is to establish a relationship between changes in a proposed model and resulting changes in the forward modelled data. Once this… Expand

254 12- PDF