Potential Theory in Gravity and Magnetic Applications
About the Figures
The textbook contains over 100 black-and-white figures to help explain theoretical and practical concepts. Here are three examples.
Fig. 8.5. Secular change in nT/yr based on IGRF 1990. Calculated by subtracting the total intensity in 1990 from that predicted in 1991.
Fig. 11.10. Power-density spectrum of the anomaly due to a randomly magnetized layer. (a) Total-field anomaly caused by magnetic layer with top at 3 km depth, thickness 1 km, and random magnetization. Magnetization is described by uniform distribution ranging between +1 and -1 A/m. Directions of magnetization and regional field are vertical. (b) Amplitude spectrum of the anomaly; values smoothed for contouring. (c) Log of radial power-density spectrum. Dots indicate average power within rings concentric about the origin. Error bars indicate standard deviation of values within the ring, divided by the square root of the number of values encountered. (d) Log of the theoretical power-density spectrum.
Fig. 12.14. Magnetic boundaries of central Nevada. (a) Total-field anomalies of Figure 12.1 were transformed to pseudogravity anomalies, then converted to horizontal gradients. (b) Dots show maxima in the horizontal gradient automatically located. Diagonal hatching represents interpreted basaltic rocks associated with a mid-Miocene rift event; vertical hatching shows the location of a granitic pluton of Tertiary age.
Return to Potential Theory
Cambridge University Press (United Kingdom)
Cambridge University Press (North America)