
1/14/2012
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• Always allow CTD to soak at the surface before a profile
– P
urge air from plumbing before pumps turn on
• SBE 9+ allows you to turn on CTD after it has soaked in water
• At 10 m, trapped air bubbles are squeezed and are easily expelled from
pump
– This also allows equilibration of entire carousel to ambient
temperature, so you have less risk of shed wakes
– Allows power-on transients in sensors to decay
• 2 secs in SBE T,C sensors for 100 ppm stability
– Oxygen Sensor stabilization for 1% stability
• 30 secs (SBE43) to set up boundary layer flow
• Soaking tip: use 2 display types
– Fixed or scrolled text display
to check all sensors and other parameters on deck and during
soak
– Multi-line plot for the cast
Soaking Before Profiling
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