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Benthic and Resistivity Sensors (BARS)

Instrument Point People

Benthic and Resistivity Sensors (BARS) at Endeavour

BARS records measurements from a multitude of sensors in hydrothermal vents. It has sensors to measure resistivity, temperature, eH (oxidizable nature of seawater components) & hydrogen.These instruments can estimate chloride concentration, temperature, and redox potential within a black smoker vent by recording a time series of fluid resistivity (M. Lilley, U of W). 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 (NEPTUNE Canada: An Invitation to Science).

Above: BARS installed at hydrothermal vents of Main Endeavour Field. Click to enlarge.

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  1. Discuss the Benthic and Resistivity Sensors here.