Study of the induction arrow at budkov (Czechoslovakia)

1972 ◽  
Vol 16 (4) ◽  
pp. 373-382
Author(s):  
Oldřich Praus ◽  
Jindřich Rejl ◽  
M. Hvoždara
Keyword(s):  
Induction Arrow

The response of perturbation and induction arrows to a three‐dimensional buried anomaly

Geophysics ◽  
1982 ◽  
Vol 47 (1) ◽  
pp. 51-59 ◽  
Author(s):  
H. L. Lam ◽  
F. W. Jones ◽  
R. D. Hibbs
Keyword(s):  
Numerical Model ◽  
Three Dimensional ◽  
Great Depth ◽  
Spatial Extent ◽  
Conductivity Anomaly ◽  
Induction Arrow ◽  
The Earth ◽  
Induction Arrows ◽  
Quadrature Phase ◽  
Induced Currents

A numerical model is employed to calculate theoretical perturbation and induction arrows for a spatially confined three‐dimensional (3-D) conductivity anomaly located at various depths below the surface of the earth for two source periods. The results indicate that the magnitudes of the induction arrow decrease as the anomaly depth increases and the arrows point toward the conductive anomaly even at great depth below the surface. It is found that the extent of the anomalous induced currents depends upon the depth of the inhomogeneity and on the source field period. The ([Formula: see text]) perturbation arrow can be used to outline the spatial extent of the anomaly, and the ([Formula: see text]) quadrature‐phase arrows better indicate the spatial extent than the in‐phase arrows if the source period is not an optimum one.

Geomagnetic depth sounding by induction arrow representation: A review

1980 ◽  
Vol 18 (1) ◽  
pp. 203 ◽  
Author(s):  
G. P. Gregori ◽  
L. J. Lanzerotti
Keyword(s):  
Induction Arrow ◽  
Depth Sounding

Difference electromagnetic induction arrow responses in New Zealand

1996 ◽  
Vol 97 (1-4) ◽  
pp. 219-229 ◽  
Author(s):  
H.W. Dosso ◽  
J. Chen ◽  
F.H. Chamalaun ◽  
J.D. McKnight
Keyword(s):  
New Zealand ◽  
Electromagnetic Induction ◽  
Induction Arrow
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