The CTD being deployed

The CTD is deployed over the side of the ship to search for evidence of hydrothermal activity. Instruments on the CTD look for changes in temperature, salinity, particulates in the water column, as well as trace metals and gases common in hydrothermal discharge. Image courtesy of Submarine Ring of Fire 2002, NOAA/OER.

Related Links

Submarine Ring of Fire 2002

Submarine Ring of Fire 2002: July 3 Log

NOAA Ocean Explorer Gallery

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