ITP 101 Deployment

ITP 101 was the first ITP deployed during JOIS 2017, and was paired with a Seasonal Ice Mass Balance Buoy (S-IMB) to form an Ice-Based Observatory (IBO). The helicopter was not used for ice floe reconnaissance due to weather and ice conditions, but instead a floe was selected visually from the bridge and surveyed by lowering 2 scientists over the side of the ship in the manbasket to drill the potential site to determine thickness. After it was determined that the floe was adequate (> 0.75 m thick), the ship’s gangway was lowered onto the ice for access by personnel and equipment was lowered using the ship’s crane. The deployment operations took a total of 3 hours to complete. Ice analyses were also performed by others in the science party while the IBO deployment operations took place.

More information and photos on the deployment operations are also available at: https://archives.whoi.edu/beaufortgyre/www.whoi.edu/page.do@pid=160016.html

Recovery operations

Nearly a year after deployment, ITP 101 surface package and partial tether were recovered from on the CCGS Louis S. St. Laurent using the ship’s small boat after it was spotted bobbing around on the sea surface.

More information and photos on the recovery operations are also available at: https://archives.whoi.edu/beaufortgyre/www.whoi.edu/page.do@pid=162776.html

Data Processing

Final Data

Jeff O’Brien and Andrey Proshutinsky have augered through the sea ice and reached the seawater. (Photo by Gary Morgan)

ITP 101 profiler in ice hole to keep it warm while verifying indictive modem communications before lowering. (Photo by Rick Krishfield)

Jeff O’Brien performs the inductive modem test. (Photo by Rick Krishfield)

ITP 101 surface package and partial tether returns on the ship’s small boat after being retrieved. (Photo by Rick Krishfield)

Picking the recovered buoy on deck using the ship’s crane. (Photo by Rick Krishfield)