Seasonal variability of water characteristics in the Challenger Deep observed by four cruises.
Seasonal variability of water characteristics in the Challenger Deep observed by four cruises.
复制标题
四次巡游观测到的挑战者深渊水特征的季节变化
DOI：
10.1038/s41598-018-30176-4
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发表时间：
2018-08-07
影响因子：
4.6
通讯作者：
Zhang T
中科院分区：
文献类型：
--
作者：
Huang C;Xie Q;Wang D;Shu Y;Xu H;Xiao J;Zu T;Long T;Zhang T
从2015年12月到2017年2月的四次航行中，在挑战者深渊进行了30次电导率-温度-深度剖面仪铸造。夏季有两次巡航，冬季有两次。结果表明，水体特征具有季节性变化。四个航次之间的最低气温值基本相同，但冬季的最低温度明显低于夏季。θ-S图表明，在相同的位温下，夏季的深水比冬季的深水更咸。夏季5,000~6,800 m之间的混合比冬季强。夏季wereεT= 3.277 × 10−8m2s−3andKzT= 2.58 × 10−2m2s−1，的耗散率和涡旋扩散率垂直平均值分别在5000~6800 m之间。夏季低于3000 dbar的地转流是气旋性的，在挑战者深渊的北部向西移动，在南部地区向东移动。
Thirty conductivity-temperature-depth profiler casts in the Challenger Deep were conducted during four cruises from December 2015 to February 2017. Two cruises took place in the summer, and two in the winter. The results demonstrated that water characteristics varied seasonally. The temperature minimum values were the same between the four cruises, but its depth was noticeably shallower in the winter than that in the summer. The θ-S diagram indicated that deep water is more saline in the summer than that in winter at the same potential temperature. Mixing is more intense between 5000 and 6800 m in the summer than that in the winter. The dissipation rate and eddy diffusivity vertically averaged between 5000 and 6800 m in the summer wereεT= 3.277 × 10−8m2s−3andKzT= 2.58 × 10−2m2s−1, respectively. The geostrophic flows below the reference level of 3000 dbar were cyclonic in the summer, travelling westwards in the northern and eastwards in the southern areas of the Challenger Deep.
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影响因子：
0.5
作者：
STRAUB, DN;RHINES, PB
通讯作者：
RHINES, PB
DOI：
10.1016/0967-0637(93)90009-r
发表时间：
1993-02-01
影响因子：
2.4
作者：
JOHNSON, GC;TOOLE, JM
通讯作者：
TOOLE, JM
DOI：
10.1016/s0198-0149(12)80002-1
发表时间：
1991-01-01
期刊：
DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS
影响因子：
--
作者：
ROEMMICH, D;MCCALLISTER, T;SWIFT, J
通讯作者：
SWIFT, J
影响因子：
3.6
作者：
DILLON, TM
通讯作者：
DILLON, TM
影响因子：
3.5
作者：
Siedler, G;Holfort, J;Csernok, T
通讯作者：
Csernok, T