A closeup of a CTD, the primary tool used to map hydrothermal plumes. A ring of plastic sampling bottles surrounds the CTD. The bottles are closed on command from the ship, usually when a scientist monitoring the sensors sees strong evidence of a plume. CTD sensors are visible at the bottom of the pressure case.

A closeup of a CTD, the primary tool used to map hydrothermal plumes. A ring of plastic sampling bottles surrounds the CTD. The bottles are closed on command from the ship, usually when a scientist monitoring the sensors sees strong evidence of a plume. CTD sensors are visible at the bottom of the pressure case. Image courtesy of NOAA Vents Program.

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Related Links

Submarine Ring of Fire 2012: Hydrothermal Vent Plumes

Submarine Ring of Fire 2012: NE Lau Basin

NOAA Ocean Explorer Gallery