Day 5 - How does all this work again?
We are far from the Blob’s realm, so we don’t expect
to find much yet. It is simply a chance for us to hone our hunting techniques
and Marie-Jose, Seobhan, Ben, Stevie and Brian in the tracer lab to sharpen
their pipettes and practice aim with their weapons of mass spectrometry (this is a scientist's blog so have have to put up with a certain level of dag...).
Our first full day at sea begins with
coordination, orientation and calibration.
The sea roles gently and the boat rocks from side to side. So for those like
Pierre, who have never been to sea, it feels more like un-coordination,
dis-orientation and inebriation.
The sea is quite calm considering we are at
the ‘Furious Fifties’ - Latitudes with the strongest prevailing winds in the
world. As we undulate through the odd white peak - Albatross swoop. Perhaps out
of curiosity. Perhaps we are fishing and they can snare some side bait. It is
no skin off their beaks as these birds can glide for months without touching
land.
Photo: Gwyn surveying one of the vertical micro-structure profilers. (We are not whaling!, it's not a harpoon!)
Alex, Gwyn, Sean, John and James test the
Vertical Microstructure Profilers to see if they float. (More difficult than it
sounds apparently). They will be thrown overboard, measuring how turbulent the ocean is as they fall towards the bottom and rise back up again…hopefully.
Photo: Gwyn, Alex and some of the crew check if the VMP floats...it does.
Andrew, Brian and I begin dropping the
Conductivity Temperature Depth Profiler (CTD). We pull up samples of water so Marie-Jose, Siobhan,
Ben, Stevie, Andy and Brian can check for the Blob of tracer. As we descend off
the South American Continental Slope the distance between sample locations is
short and the depth to which we measure shallow. This makes for frantic too-ing
and fro-ing. No sooner do we begin draining water from the CTD does George the
winch man want to throw it over the side again.
Time to sleep!
No comments:
Post a Comment