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recovery of CTD
Recovery of the CTD onto the Oden.
Video (1:11) watch the video

ABCs of CTDs

“Today will be a day of CTDs, and lots of ‘em,” said Rob Reves-Sohn, the expedition’s chief scientist. And so it went. CTD stands for “Conductivity, Temperature, Depth,” and it is one of the most commonly used oceanographic instruments. Throughout the day, researchers lowered a CTD through the ocean and reeled it back up again, taking measurements of seawater properties, hoping to detect plumes from active hydrothermal vents, moving to another area to cast again, and hoping some more.

Read on about our adventure in the slideshow below. Can't see the slideshow? Get the Flash plug in »

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