The "Dipole" Signature:
Set the Earth's Inclination ($I$) to 90° (North Pole) and the Magnetization Angle ($\alpha$) to 90°.
What does the anomaly shape look like? Is it symmetric?
Now move the Inclination to 0° (Equator) and Magnetization to 0°. How does the anomaly shape change? Why is a "positive" mass producing a "negative" anomaly here?
Depth and Width:
Keep the magnetic strength constant.
Drag the body deep underground. What happens to the width of the anomaly curve?
Drag it very close to the surface. How does the width change?
Rule of Thumb: Geophysicists often use the "half-width" of the anomaly to estimate depth. Based on your observation, does a wider anomaly imply a deeper or shallower source?
The Mystery of Remanence:
Set the Earth's Inclination (I) to 60°.
First, set the Magnetization Angle (alpha) to 60° (Induced Magnetization only). Note the shape (usually a high peak with a small low trough to the north).
Now, change the Magnetization Angle (alpha) to -30° (simulating Strong Remanent Magnetization pointing differently).
Does the anomaly look like it belongs at a different latitude? This demonstrates why understanding Remanent Magnetization is crucial—it can trick you into misinterpreting the location or orientation of the body.
Non-Uniqueness (The Ambiguity Problem):
Place the body deep down but increase its Strength (M) to maximum. Note the peak amplitude.
Now, decrease the Strength significantly and move the body shallower.
Can you find a position where the shallow, weak body produces an anomaly almost identical in amplitude to the deep, strong body? (This highlights why we need other data, like gravity or seismic, to constrain our interpretations).