Stable oxgen isotope ratio of seawaters off Cape Darnley by rosette-multi-water sampler during 2011-2020

Hydrographical observations were conducted during the Icebreaker Shirase to describe the oceanic watermass properties off Cape Darnley, East Antarctica. Conductivity, Temperature, and Depth (CTD)/ Rosette Multi-Sampler (RMS) observations were completed during February 2001 to February 2020. SBE19/SBE55 ECO Water Sampler system of Sea-Bird Electronics, Inc. was used. 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.