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First-order numerical approach to interpretation of transient electromagnetic anomalies.

Authors :
Ogilvy R.D.
Dabek Z.K.
Ogilvy R.D.
Dabek Z.K.

Abstract

A simple first-order interpretation scheme is proposed for the theoretical modelling of late-time transient EM anomalies. It has been shown that, to a first approximation, the transient behaviour of a thin plate can be represented by the first free-decay eigencurrent. All the principal qualitative features of TEM anomalies can be reproduced for any loop configuration: theoretical model responses have been generated for the common loop, separated loop and fixed transmitter loop geometries for a range of target dispositions. The study indicates that the fixed central transmitter configuration is preferable to both the common and separated loop geometries for deep mineral exploration, ease of interpretation and rapid areal coverage.<br />A simple first-order interpretation scheme is proposed for the theoretical modelling of late-time transient EM anomalies. It has been shown that, to a first approximation, the transient behaviour of a thin plate can be represented by the first free-decay eigencurrent. All the principal qualitative features of TEM anomalies can be reproduced for any loop configuration: theoretical model responses have been generated for the common loop, separated loop and fixed transmitter loop geometries for a range of target dispositions. The study indicates that the fixed central transmitter configuration is preferable to both the common and separated loop geometries for deep mineral exploration, ease of interpretation and rapid areal coverage.

Details

Database :
OAIster
Notes :
und
Publication Type :
Electronic Resource
Accession number :
edsoai.on1309147043
Document Type :
Electronic Resource