In this report, the Zone 1 anomalies are interpreted with the 
aid of intensity of magnetization computations and a two-dimensional 
profile matching technique. In addition, the total magnetic inten- 
sity and inclination data associated with the seamounts are used to 
calculate their respective horizontal and vertical component anom- 
alies (figs. 6 and 7). The difference between the Zone 1 and 2 
anomalies is examined nee the anomalies of Zone 3 are discussed in 
terms of regional geology and other geophysical studies of the con- 
tinental margins. 
II. DATA REDUCTION 
Figures 4 and 5 depict the observed total magnetic intensity 
(F) and inclination (I) respectively, for the complete survey area. 
The total magnetic intensity contours (fig. 4) were determined 
from data scaled directly from the original records, whereas the 
inclination contours (fig. 5) are a graphically smoothed represen- 
tation of the measured data. This smoothing was necessary due to 
noise generated by aircraft motions. No corrections were applied 
to these charts to remove temporal variation effects. 
The residual horizontal intensity (Hp » Fig. 6) and anomalous 
vertical intensity (Z,, fig. 7) were determined for the seamounts 
of Zone 1 by calculating the scalar difference between observed 
and regional components. Using observed total intensity (F) and 
observed inclination (I), the "observed" components were found 
