Water Sampling

Water samples for oxygen and carbon isotope analyses by Dr Enriqueta Barrera, Ohio State University, were taken at the 100 m site of each of the eight transects. Samples were collected using a small Niskin bottle deployed 10 m below the sea ice and 5 m above the sea floor at each site. Subsamples were measured for pH within 2 hours of collection. We had hoped to collect water samples for this study from previous 1981 sea floor sample sites, but the lack of sea ice cover in the central part of McMurdo Sound made this impossible this season.