Short Note: A Simple Interpretation Aid for Electromagnetic Anomalies

Lindsay Thomas

doi:10.1071/EG987349

ISSN: 0812-3985
E-ISSN: 1834-7533

Short Note: A Simple Interpretation Aid for Electromagnetic Anomalies
Authors Lindsay Thomas^a
View Affiliations Hide Affiliations

^a University of Melbourne, Parkville, 3052, Australia
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 18, Issue 3, Jun 1987, p. 349 - 351
DOI: https://doi.org/10.1071/EG987349
- Published online: 01 Jun 1987

Abstract

The transient magnetic fields in a borehole near a plate-like conductor can be simulated with a simple current loop in the plane of the conductor. The shape of the response with depth in the hole is related to the position and orientation of the current loop, so that characteristics of the response such as the zero-crossing separation can be used to predict the location of the current loop and therefore the location of the conductor in which the current circulates. Physical model results verify the application of the characteristics in this way.

Article metrics loading...

/content/journals/10.1071/EG987349

1987-06-01

2026-01-13

From This Site

/content/journals/10.1071/EG987349

dcterms_title,dcterms_subject,pub_keyword

-contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution

10

5

Full text loading...

References

Barnett, C. T. (1984)—‘Simple inversion of time-domain electromagnetic data’, Geophysics49, 925-933.
Buselli, G. & O2019;Neill, B. (1977)—‘SIROTEM. A new portable instrument for multichannel transient electromagnetic measurements’, Bull.Aust. Soc. Explor. Geophys.8, 82-87.
Grant, F. S. & West, G. F. (1965)—‘Interpretation theory in appliedgeophysics’, New York, McGraw Hill Book Co., Inc., 583 pp.
Nabighian, M. N. (1979)—‘Quasi-static transient response of a conducting halfspace — An approximate representation’, Geophysics44, 1700-1705.
Parums, R. (1984)—‘ Downhole electromagnetic modelling’, B.Sc. (Hons) report, University of Melbourne, Melbourne, Victoria.
Smythe, W. R. (1968)—‘Static and dynamic electricity’, New York, McGraw Hill Book Co., Inc., 623 pp.
Woods, D. V. (1975)—‘A model study of. the Crone borehole pulseelectromagnetic (PEM) system’, M.Sc. thesis, Queen’s University, Kingston, Ontario.

/content/journals/10.1071/EG987349

Article Type: Research Article

Keyword(s): current filament; downhole EM; nomograms; scale modeling

Most Cited This Month Most Cited RSS feed

- A comparison of smooth and blocky inversion methods in 2D electrical imaging surveys
  
  Authors M.H. Loke, Ian Acworth and Torleif Dahlin
- Reverse-Time Migration using the Poynting Vector
  
  Authors Kwangjin Yoon and Kurt J. Marfurt
- SkyTEM–a New High-resolution Helicopter Transient Electromagnetic System
  
  Authors K. I. Sorensen and Esben Auken
- An overview of a highly versatile forward and stable inverse algorithm for airborne, ground-based and borehole electromagnetic and electric data
  
  Authors Esben Auken, Anders Vest Christiansen, Casper Kirkegaard, Gianluca Fiandaca, Cyril Schamper, Ahmad Ali Behroozmand, Andrew Binley, Emil Nielsen, Flemming Effersø, Niels Bøie Christensen, Kurt Sørensen, Nikolaj Foged and Giulio Vignoli
- The Fast Marching Method: An Effective Tool for Tomographic Imaging and Tracking Multiple Phases in Complex Layered Media
  
  Authors Nicholas Rawlinson and Malcolm Sambridge
- 3-D Analytic Signal in the Interpretation of Total Magnetic Field Data at Low Magnetic Latitudes
  
  Authors Ian N. MacLeod, Keith Jones and Ting Fan Dai
- CMP cross-correlation analysis of multi-channel surface-wave data
  
  Authors Koichi Hayashi and Haruhiko Suzuki
- A new direct non-invasive groundwater detection technology for Australia
  
  Authors M. Schirov, A. Legchenko and G. Creer
- 3D inversion of airborne electromagnetic data using a moving footprint
  
  Authors Leif H. Cox, Glenn A. Wilson and Michael S. Zhdanov
- Notes On Rock Magnetization Characteristics In Applied Geophysical Studies
  
  Authors D. A. Clark and J. B. Emerson
More Less

Short Note: A Simple Interpretation Aid for Electromagnetic Anomalies

Abstract

Most Read This Month

Most Cited This Month Most Cited RSS feed