Geometrics Inc. G-882 Cesium Marine Magnetometer Page 27
Figure 30
To get very deep we offer steel armored coaxial cable with a telemetry
system and high voltage power supply. This system can operate over 6 to 10
Km of steel coax cable.
C. How tight a turn can I make?
Tight turns remove the forward tension on the tow cable and therefore allow
the sensor to sink. The tighter the turn, the longer the cable and fish will be
without forward motion. Long cables will also lengthen the sink time. We
recommend keeping the sensor under forward motion by performing an eye-
bolt type maneuver or using a racetrack pattern (line 1, line 6, line 2, line 7,
etc) to keep forward progress.
D. Isn’t Cesium radioactive?
There are certain isotopes of cesium that are radioactive, but we do not use
radioactive isotopes in cesium magnetometers. We use extremely small
amounts (micrograms) of the pure elemental metal which is non-radioactive
and essentially non-reactive in those amounts.
E. How far can the magnetometer “see”?
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