Simultaneous measurements of ocean current, temperature and salinity measurements to determine the oceanography of McMurdo Sound

An acoustic doppler current profiler (ADCP) provides measurements of velocity at multiple depths and were deployed simultaneously at several sites. Measurements of salinity and temperature were collected using CTD instruments and CTD profiles were collected during various periods of the tide. Conductivity and temperature data was collected using a CT arm which when in position gives salinity and temperature measurements in the ocean, 10-15 cm from the bottom of the sea ice sheet.

Turbulence velocimeters were deployed at 10 and 30 m to measure velocity on centimetre scales. A Scamp temperature and salinity profiler was deployed repeatedly to collect temperature and salinity. It measures data while sinking, allowing it to measure on centimetre scales over the top 90 m of the water column.