While multiple studies have investigated oxygen decrease in Japan Sea Proper Water (JSPW; > 300 m in depth), oxygen variation in continental slope and shelf waters (< 300 m) must also be investigated in order to assess its socioecological impacts. In this study, historical oxygen data in the waters of three continental shelves and a bank of Japan Sea, off-Awashima area (AW), Wakasa Bay (WB), East of Tsushima Straight (ETS), and Yamato Bank (YB), were collected and analyzed to assess temporal variation of oxygen in each region from 1960 to 2000s. Significant decreasing trends of oxygen were detected in the waters below 150 m depth in WB and YB, and below 300 m in AW, in the summer season. In winter, a decreasing trend of oxygen was detected throughout the water column from 300 m to the sea surface in WB and YB. In ETS, a deoxygenation trend was detected throughout the water column from the bottom to the sea surface in the summer season, while no trend was detected in winter. The results suggested that oxygen decreases in AW, WB, and YB were the consequence of the upward propagation of the deoxygenation signal from JSPW, while that of ETS was caused by horizontal propagation of deoxygenation signal from the East China Sea. Assuming that the observed trend will continue in future, it is predicted that part of the water in Tsushima Strait area will reach the general sublethal threshold of oxygen (134 μmol kg⁻¹) by the end of this century.

尽管多项研究已经调查了日本海水适量水（JSPW；深度> 300 m）中的氧气减少量，但还必须研究大陆坡和陆架水域（<300 m）中的氧气变化，以评估其社会生态影响。在这项研究中，在三大洲陆架和日本海沿岸，淡岛地区（AW），若狭湾（WB），对马海峡东部（ETS）和大和银行（YB）的水域中的历史氧气数据，收集并进行分析，以评估1960年至2000年代每个区域的氧气时间变化。在夏季，在WB和YB深度低于150 m的水域和AW低于300 m的水域中，发现了氧气的显着下降趋势。冬季，在WB和YB的整个水柱中，从300 m到海面，都发现了氧气的减少趋势。在ETS中，在夏季，整个水柱从底部到海面都检测到了脱氧趋势，而在冬季则没有检测到脱氧趋势。结果表明，AW，WB和YB中氧气的减少是JSPW脱氧信号向上传播的结果，而ETS的氧气减少是东海脱氧信号水平传播的结果。假设观察到的趋势将来还会继续，预计对马海峡地区的部分水将达到氧气的一般亚致死阈值（134μmolkg YS和YB是JSPW脱氧信号向上传播的结果，而ETS的传播是东海脱氧信号水平传播的结果。假设观察到的趋势将来还会继续，预计对马海峡地区的部分水将达到氧气的一般亚致死阈值（134μmolkg YS和YB是JSPW脱氧信号向上传播的结果，而ETS的传播是东海脱氧信号水平传播的结果。假设观察到的趋势将来还会继续，预计对马海峡地区的部分水将达到氧气的一般亚致死阈值（134μmolkg^-1）到本世纪末。