Benthic and Resistivity Sensors (BARS) collect measurements from hydrothermal vents, using a multitude of sensors. BARS have sensors to measure resistivity, temperature, eH (oxidizing nature of seawater components) and hydrogen. These instruments can estimate chloride concentration, temperature, and redox potential within a black smoker vent by recording a time series of fluid resistivity. The region of active geothermal venting, measured by BARS sensors, shows extremely variable temperatures as hot hydrothermal fluid is cooled quickly by surrounding sea water.
Individual instruments of the above category, which are (or have been) connected to our observatories. Click an instrument for detailed information.
Click the instrument categories below for descriptions and lists of instruments belonging to that category.