Figure F31. Magnetic field logs from Hole 1103A. All units are in nT. A. Total magnetic field (MAGB) (dotted), MAGB with spikes removed (solid), and the modeled pipe effect (dashed). B. Field anomaly minus the spikes and the pipe effect. C. Field anomaly produced by the induced magnetization of the sediment. D. The field anomaly produced by the remanent magnetization, calculated by subtracting the induction anomaly from the pipe-corrected total field anomaly.