Mercer, Adam Matthew (2012) Combining multiple components of infiniTEM electromagnetic data to better represent subsurface anomalies. Masters thesis, Memorial University of Newfoundland.
- Accepted Version
Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
Time-domain electromagnetic (TDEM) surveys rely on electromagnetic induction from a time varying magnetic field to produce recordable responses from conductive material in the subsurface. Interpretation of TDEM data is dependent on the location of a conductor in relation to the primary field of the transmitter and therefore can be very complicated. This is especially true for the InfiniTEM® figure 8 transmitter configuration where the same vertical conducting plate can produce a variety of signatures depending on its location relative to the transmitter loop. This study investigates the usefulness of the energy envelope processing technique to combine multiple components of InfiniTEM® survey data to remove the directional dependance on the primary field. The energy envelope involves adding the vertical and horizontal components responses with associated Hilbert transforms in quadrature to create a single profile peaking over the location of an anomaly. This approach provides a more intuitive contour map for interpretation.
|Item Type:||Thesis (Masters)|
|Additional Information:||Includes bibliographical references (leaves 119-120).|
|Department(s):||Science, Faculty of > Earth Sciences|
|Library of Congress Subject Heading:||Magnetic prospecting--Data processing; Electric prospecting--Data processing; Electromagnetic measurements.|
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