Geometrics, Inc. G-824A Magnetometer Manual
8
Note that the orientation zones show in Figures 6 through 8 overlap one another by 10º of
magnetic inclination. In these regions of overlap either of the recommend orientations
may be used. Also, note that in the equatorial region there are two different recommended
sensor orientations. In this region the magnetic field is nearly horizontal and there may
be some restrictions on the direction of flight. Choosing one of the two recommended
orientations will allow you to choose flight directions most suitable for your survey area.
Figure 6 Mid-latitude zone.
The diagram to the left shows the
recommended sensor orientation
for operation in mid-latitudes. This
zone is shown as the shaded
regions above and includes those
areas where the absolute
inclination of the Earth’s magnetic
field is greater or equal to 20º and
less than or equal to 75º. There are
no restrictions on the direction of
travel when using this sensor
orientation.
