The oceanographic observations in Bowdoin Fjord were conducted by our research group in the summer 2017.
This is our fifth field campaign in the fjord since 2013. The ice front of the 3-km-wide Bowdoin Glacier is submerged in the fjord several hundred meters below the seawater surface. Survey at the boundary region between the glacier and fjord is important to understand the contribution of ocean heat to the melt of the glacier front, as well as the impact of the glacial meltwater on the chemical material cycling and marine ecosystems in the fjord. In the field campaign in 2017, we sampled zooplankton with ROV(Remotely Operated Vehicle) and deployed a mooring system (conductivity-temperature-pressure sensors and current meter) in the fjord approximately 1 km off the calving front. Seawater samples for chemical analysis were collected mainly in the fjord near the calving front. In addition, a mooring system installed last year was successfully recovered from the fjord. The instruments recorded the changes in warm water flux at the mouth of this fjord over a year. By combining data obtained by the measurements and sampling, we will gain a new insight into the complex ice-ocean interactions.
Naoya Kanna (Hokkaido University, a member of theme 2)