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1.4 Vector components of a magnetic field 

These models use the same base geology as the previous sections, but compare the total magnetics with the three vector components of the field, for a model calculated first at an inclination of -50° and then at -90°. The assymetries in the vector and total field images arise from a combination of obliquity of the Earth's field (for the first two columns of images) combined with the superposition of the symmetric anomalies for all images. 

Click on the images to launch Noddy. A legend is provided at the end of this page. 

3D view of geology, looking from SW.
View geology model
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Inclination of 50°
Inclination of 90°
Link
Grey Scale
Pseudo Colour Contours
Grey Scale
Pseudo Colour Contours
Anomalous component
of total field
Open history with NoddyOpen FracViewer Movie 
Open magnetics with Noddy
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Open magnetics with Noddy
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Open magnetics with Noddy
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Open magnetics with Noddy
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X component
of total field
Open history with NoddyOpen FracViewer Movie 
Open magnetics with Noddy
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Open magnetics with Noddy
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Open magnetics with Noddy
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Open magnetics with Noddy
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Y component
of total field
Open history with NoddyOpen FracViewer Movie 
Open magnetics with Noddy
LOAD JPEG IMAGE
Open magnetics with Noddy
LOAD JPEG IMAGE
Open magnetics with Noddy
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Open magnetics with Noddy
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Z component
of total field
Open history with NoddyOpen FracViewer Movie 
Open magnetics with Noddy
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Open magnetics with Noddy
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Open magnetics with Noddy
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Open magnetics with Noddy
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Key
Survey Parameters
Scales
plugs & dykes
k = 10-2
 
background
k = 0
 
image width
10,000 m
 
 
inclination
50° or 90°
 
intensity
50,000 or 70,000 gamma
 
flying height
200 m
 
 
max min
max min
 
All models created using Noddy
Copyright © 1998 AGCRC & Mark Jessell

WWW conversion by Ian Brayshaw