Week One on the Langseth!

We had a busy start to the week as we prepared to depart from the Brooklyn Navy Yard. We faced some potential delays (engine parts, science gear), but ultimately decided to make our first, near-shore station (which was initially intended as a test site for our gear) a full research station. After completing work there, it was decided to proceed to the next station (rather than returning to NY to pick-up parts). So, the next land we see will be Iceland!

The new Okeanus winch passed its stress test, and we made a valiant effort at calibrating the Rugged Controls winch sensor as best we could. We finished rigging up the multi-corer and CTD/Niskin Rosette, then proceeded to make our first cast for cores! This site was relatively shallow at 2240m, and it takes about 45 minutes for the corer to reach the ocean floor at this depth.

The collection of the cores is controlled by the winch operator; once the corer’s feet land on the seabed, more cable is paid out to release the plastic core tubes into the sediment and gather the sample. We spent several days coring, with the science crew also working long hours to get all the samples processed appropriately. All of their work needs to be done in oxygen-free environments (nitrogen-filled glove boxes) so as not to alter the chemistry of the sediment.

After the science crew was happy with the amount mud/pore water we collected, we switched the winch cable to the CTD/Rosette and sent that over. It was cool to watch the CTD take a profile on the descent and then to fire the Niskin bottles to close at various depths on the way back up.

Driving the winch to land the multicorer on the seabed and assembling the CTD and using its software program (SeaSave) were some of my favorite tasks this week.

Since being in transit, I have also spent some time in the bridge standing watches. I learned a lot about the systems on board and the maritime field in general by talking with the deck crew and officers.

Today (Monday 6/17) we set our clocks forward by an hour to -3 UTC…the cities of Halifax and Buenos Aires both work as a correct time zones.

I am feeling very grateful that the ship has an awesome kitchen and steward team. We have been eating well, thanks to John and Insuk. In addition to the science party, the marine techs, and the kitchen and steward crew, the engine room and deck crews have also been working hard. It has been exciting to see how all these teams come together to make for a successful day.

Also, basking sharks and dolphins!

Thanks,

Eddy