Stable oxygen isotope ratio of seawaters in the Cape Darnley Polynya by a time-series remote access sampler from February 2017 to February 2018 (JARE-58)

In the Cape Darnley Polynya, East Antarctica, we conducted time-series water sampling to investigate freshwater budget from February 2017 to Februay 2018. A Remote Access Sampler (RAS-500) was installed at 176m depth. The instrument was manufactured by McLane Ltd., U.S. After transporting the water samples to laboratory, stable oxygen isotope ratio, reference to VSMOW2, was measured by Isoprime (Elementar, U.K.) at Institute of Low Temperature Science, Hokkaido University. Salinity was also measured at Institute of Low Temperature Science, Hokkaido Univerisity by AutoSAL 8400B salinometer (Osean Scientific International, Ltd., U.K.). The mooring system was deployed by JARE58 and retrieved by JARE59 using Icebreaker Shirase.