JC010: Mud volcanoes and submarine canyons


Using the CTD temperature probe

The CTD probe is lowered into the water. As it travels down through the water column, it constantly records the temperature, pressure and conductivity of the water. The conductivity can be used to work out the salinity (how salty the water is).

Finding out the conductivity (salinity) and temperature of the seawater at different depths is important for scientists to learn more about the currents that are operating in the area, and it can also help them to locate specific geological features, such as hydrothermal vents and cold seeps, or find out more about how features such as submarine canyons affect ocean circulation in the area. Most importantly, it gives them an idea of the oceanographic conditions in the area they are studying - this is critical for understanding the ocean as an integrated system.

The CTD probe being lowered into the water

Data recorded by the CTD is fed back to the ship and displayed on computer screens

Any questions? Ask us using the question and answer page

Home -



Latest news

For teachers
Contact us

© NOCS 2007