We will be arriving at Goban Spur Saturday morning and the first task will be to deploy a CTD to collect water samples. CTD's measure Conductivity (salinity), Temperature, and Depth.
CTD footage taken on an earlier expedition
|Charlie checks the megacorer|
I will then seal the core tubes to make them into experimental microcosms, keeping them at ambient bottom water temperature in an incubation chamber. I will measure the declining oxygen concentration in the microcosms over about 48 hours and at the end of this slice and preserve mud from the top 10cm for later analyses of the bacteria and fauna present.
I will also collect a set of ‘background’ cores at Goban Spur. These cores will not be used in the experiment but will instead be sliced and preserved immediately. Later I will compare bacteria and fauna present in these cores with the experiment cores.
Today’s blog is brought to you by Charlie Main, a PhD student at NOC.