Wednesday, October 17, 2007

CMRC3 Station Decommissioned

The team on this trip consisted of Jules Craynock, Nancy Ash and Mike Jankulak.

On Tuesday, October 16th, 2007, we started the process of removing all equipment and electronics from the station. The four underwater instruments were removed first: Shallow BIC, Shallow CTD, Deep BIC, and Deep CTD.

Next, the top of the pylon was opened and the station shut down. The final transmission consisted of data reported at 1pm local time (17h UTC). The "brain" control package was removed, and so were the two battery packs, the surface BIC, the air temperature sensor, the GPS antenna, and one of the windbirds with its compass and mast.

Work continued and was completed this afternoon. The second windbird, mast and compass were removed, followed by the transmitter antenna and mast, and the four solar panels. The solar panel mast, which contains a wire that connects the lightning diffuser to the grounding plate, was left in place.

After equipment removal was completed, cables were arranged and tied in place; cables were also identified at both ends by colour-coded zip ties (blue for CTD, yellow for BIC, green for Groundtruth CT, red for SAMI PCO2, white for PAM; where more than one instrument had been present, "deep" instruments were identified with two cable ties at each end and "shallow" instruments with one).

Besides the seven cables and the grounding wires, the only equipment left in place was the lightning diffuser brush and the navigation light. The rest of the equipment will be packed tomorrow morning for its return to AOML.