The effects of seawater thermodynamic parameters on the oxygen minimum zone (OMZ) in the tropical western Pacific Ocean.
The effects of seawater thermodynamic parameters on the oxygen minimum zone (OMZ) in the tropical western Pacific Ocean.
复制标题
DOI：
10.1016/j.marpolbul.2023.114579
复制
发表时间：
2023-01
影响因子：
5.8
通讯作者：
Jun Ma;Xuegang Li;Jinming Song;Lilian Wen;Qidong Wang;Kuidong Xu;Jiajia Dai;Guorong Zhong
中科院分区：
文献类型：
--
作者：
Jun Ma;Xuegang Li;Jinming Song;Lilian Wen;Qidong Wang;Kuidong Xu;Jiajia Dai;Guorong Zhong
The continuous expansion of the oxygen minimum zone (OMZ) is a microcosm of marine hypoxia problem. Based on a survey in M4 seamount area of Tropical Western Pacific Ocean, the effects of thermodynamic parameters on OMZ were discussed. The study showed thermodynamic parameters mainly affect the upper oxycline of OMZ. The increase in temperature aggravates seawater stratification, which not only shallows oxycline but also increases the strength of DO stratification, promoting the expansion of OMZ. Based on relationships between thermodynamic parameters, water mass and DO, OMZ in this area is defined as follows: the water layer with low DO between the lower boundary of high-salt area and 1000 m. Moreover, the study showed that though there is no “seamount effect” on a scale of 3000 m, low-value areas of DO form at the bottom of seamount. This study will provide an evidence for expansion of OMZ exacerbated by global warming.
