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FIELD CONTINUATION AND THE STEP MODEL IN AEROMAGNETIC INTERPRETATION *
Author(s) -
HENDERSON ROLAND G.
Publication year - 1966
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1966.tb02252.x
Subject(s) - continuation , anomaly (physics) , geology , interpretation (philosophy) , free air gravity anomaly , geophysics , field (mathematics) , magnetic anomaly , singularity , potential field , function (biology) , geometry , computer science , physics , gravity anomaly , mathematics , bouguer anomaly , paleontology , oil field , pure mathematics , programming language , evolutionary biology , biology , condensed matter physics
Downward continuation of the field in the neighborhood of a singularity of a magnetic anomaly is used to render the anomaly more two‐dimensional, to make the bottom of the causal body more remote, and to obtain an auxiliary function, φ (O, z), by means of which the anomaly may be interpreted in terms of an equivalent vertical contact or step model. The concept of “apparent depth” is introduced and used in studying depth extent and susceptibility. The methods are illustrated with theoretical and practical examples.