Frequency Filtering: Geophysicists often compare continuation to frequency filters. Based on the simulation, which operation (Upward or Downward) acts as a Low-Pass Filter (allowing smooth, long-wavelength features to pass) and which acts as a High-Pass Filter (emphasizing sharp, short-wavelength features)?
Regional vs. Residual: If you were looking for a deep basement structure (Regional Trend) but your data was "cluttered" with signals from shallow metallic junk (Local Anomalies), which continuation technique would help you see the basement more clearly? Conversely, if you were trying to pinpoint the exact edges of the shallow targets, which would you use?
Survey Design: If you were designing an airborne magnetic survey to detect small, shallow unexploded ordnance (UXO), would you fly high or low? Based on the "Upward Continuation" behavior in the simulator, how does increasing flight height affect your ability to resolve small, closely spaced objects?