Behind the scenes

A wet day at sea


April 2, 2013

MBARI Administrative Assistant Mariah Salisbury gained a new appreciation for the rigors of ocean research during her last cruise aboard the R/V Rachel Carson with MBARI’s Biological Oceanography Group. But she didn’t let the cold and wet deter her from preparing the water-sampling bottles on the CTD-rosette. At the bottom of the rosette is the CTD—an instrument for measuring ocean salinity and temperature at various depths. The CTD rosette is lowered on a cable down into the ocean and collects discrete water samples as each bottle is closed at a particular depth. The samples are used to determine the physical and biological properties of the seawater.