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The intense low pressure system passed to our north overnight and we have been able to continue working. We are about to complete CTD 33, where we have been joined by a group of rockhopper penguins. The bottom depth is beginning to decrease as we start to ascend the southern slope of the Southeast Indian Ridge. We will deploy an Argo profiling float once the CTD is on deck. Argo floats drift freely with the ocean currents, surfacing every 10 days to transmit a temperature and salinity profile from 2000 m depth to the surface via satellite. Argo allows us to obtain oceanographic measurements spanning the entire Southern Ocean in a cost-effective way. But ship observations like the ones we are collecting are critical to provide high quality observations to calibrate the floats, to measure the deep ocean beyond the range of Argo floats, and to collect water samples for biogeochemical studies. Cheers, Steve and Deepy.
Map
A map showing Australia and Antarctica. The map shows the journey of one voyage that has occured in the season, with each route highlighted in a distinct colour.