The major focus of the cruise was sediment collections at slope and deep-sea sites using a multiple corer and a piston corer. The team accomplished a total of 53 successful deployments of the multiple corer, from which samples of sediment were obtained for studies of marcofauna, microbiology, and sediment geochemistry. There were 11 multicore attempts that failed to recover any sediment. The multicorer worked very well compared with previous Deep-C cruises. However, two core tubes with their rings were lost. We collected 12 piston cores from nine unique sites, all piston core recoveries were over 2 m in length. One piston core attempt failed, but the liner was reused and the site (PCB-06) was successfully cored later in the cruise. Two benthic surveys with the imaging platform MILET were completed, but problems with the fiber optic cable prevented further work with that instrument. Two bongo-style plankton tows were attempted, but the net tore and this effort was discontinued. The deepest site was XC-4 at 2295 m; shallowest site visited was PCB-04 at 203 m. Using the Weatherbird II CTD-rosette, we collected 18 CTD profiles and recovered water samples during five of the profile events.
party of RV Weatherbird II cruise WB1411, 11 June 2014. |
From left Curtis Okolovitch, Peter Lazaravich, Caroline Johansen, Mau Silva,
Arvind Shantharam, Nikki Morgan, Boryoung Shin,
Ian MacDonald, Xiaoxu Sun, John Kaba, and Ben LaBelle
Support from Captain Baumeister and his crew was outstanding. The deck and engineering operators provided knowledgeable advice and invaluable hands-on assistance. The piston core operations, in particular were only possible with the help of the deck boss. The technical operations were carried out very reliably, the only short coming being intermittent internet access. The FSU marine field group, Peter Lazaravich and Erick Howarth operated the USBL navigation, MILET operations, and data server.
Finally, as chief scientist, I want to acknowledge and thank the students who did the hard and dirty work, while maintaining extremely high scientific standards and unfailing good cheer, throughout the days of this cruise. They have been a true pleasure to sail with. Good luck in all your future efforts, my friends.
Florida State University