DOI: 10.1002/2017JC013538
Scopus记录号: 2-s2.0-85044209046
论文题名: Intrusion Pattern of the Offshore Kuroshio Branch Current and Its Effects on Nutrient Contributions in the East China Sea
作者: Wang W. ; Yu Z. ; Song X. ; Yuan Y. ; Wu Z. ; Zhou P. ; Cao X.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 3 起始页码: 2116
结束页码: 2128
语种: 英语
英文关键词: branch current intrusion
; East China Sea
; Kuroshio
; nutrients cycles
; phosphate
Scopus关键词: concentration (composition)
; continental shelf
; halocline
; nutrient cycling
; oxygen isotope
; phosphate
; pycnocline
; salinity
; seasonal variation
; water column
; water mass
; East China Sea
; Kuroshio Current
; Pacific Ocean
英文摘要: During the autumn season of 2014 (October–November), nutrient samples and nitrogen and oxygen isotope samples from the East China Sea (ECS) were collected and analyzed, and auxiliary physical parameters were determined. Distinctive high-salinity water column conditions with significant haloclines and pycnoclines similar to those observed during the spring were detected at the bottom of the ECS during the autumn. These water column conditions were attributed to the intrusion of the Kuroshio Subsurface Water (KSSW), which then separated into two currents, including the Offshore Kuroshio Branch Current (OKBC). Compared with spring, this intrusion transported higher phosphorus (P) concentrations onto the ECS continental shelf in autumn. However, according to multiple analyses, biogeochemical nitrogen processes are unable to explain the variations in the P concentrations (increase) while assuming that each distinctive water column is consistent. Identifying the water columns by their salinities and P concentrations revealed that the northern ECS water column was similar to the deep KSSW while the southern ECS water column was similar to the shallow KSSW. Therefore, we speculate that the distinctions among the seasonal variations of P-enriched water masses were attributable to the different intrusion positions of the Kuroshio. The shift of the KSSW intrusion location moved toward the northeast during the autumn relative to the spring. This shift, which was proved by the oceanic vortex data, caused the deeper KSSW water upwelled to the ECS and formed the OKBC, thereby supplying additional P during the autumn. © 2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114424
Appears in Collections: 气候减缓与适应
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作者单位: CAS Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Wang W.,Yu Z.,Song X.,et al. Intrusion Pattern of the Offshore Kuroshio Branch Current and Its Effects on Nutrient Contributions in the East China Sea[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(3)