Stable oxygen isotope ratio of seawaters off the coast from Wilkes to George V Land, East Antarctica, during 2018/2019 summer

Hydrographical observations were conducted during the Kaiyo-maru cruise (KY1804) to describe the oceanic watermass properties off the coast between 80-150E, East Antarctica. Conductivity, Temperature, and Depth (CTD)/ Rosette Multi-Sampler (RMS) observations were completed during December 2018 to February 2020. SBE911plus with 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.