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.本研究依托“海王丸号”（Kaiyo-maru）科考航次KY1804，对东南极80°E~150°E近岸海域的海洋水团性质开展水文观测。观测工作于2018年12月至2020年2月期间完成，采用温盐深仪（Conductivity, Temperature, and Depth, CTD）与罗塞塔多采水器（Rosette Multi-Sampler, RMS）进行数据采集，所用设备为美国海鸟电子公司（Sea-Bird Electronics, Inc.）生产的SBE911plus型采水系统。采集的水样被运送至实验室后，由北海道大学低温科学研究所使用英国Elementar公司的Isoprime仪器，完成了以VSMOW2为参考标准的稳定氧同位素比值测定。