DOI: 10.1002/2014GL060230
论文题名: Tracing the flow rate and mixing ratio of the Changjiang diluted water in the northwestern Pacific marginal seas using radium isotopes
作者: Lee H. ; Kim G. ; Kim J. ; Park G. ; Song K.-H.
刊名: Geophysical Research Letters
ISSN: 0094-9996
EISSN: 1944-9727
出版年: 2014
卷: 41, 期: 13 起始页码: 4637
结束页码: 4645
语种: 英语
英文关键词: Changjiang diluted water
; Ra isotopes
Scopus关键词: Charge density waves
; Flow rate
; Isotopes
; Mixing
; Seawater
; Diluted waters
; Horizontal distribution
; Large surface area
; Ra isotopes
; Radium isotopes
; Relative contribution
; Sampling stations
; Surface seawater
; Radium
英文摘要: We measured Ra isotopes (223Ra and 228Ra) in surface seawater of the northwestern Pacific marginal seas to trace the flow rate and mixing of the Changjiang diluted water (CDW) in the summer of 2012. Based on the horizontal distribution of 223Ra activities, the arrival time of CDW from the river mouth to 450 km offshore northeast was estimated to be 20-35 days, which is similar to that determined in previous studies. Moreover, we successfully calculated the relative contribution of CDW at each sampling station using a salinity and 228Ra diagram. Using this unique method, we found that the relative contribution of CDW was more than 30% in most surface seawaters of the northern East China Sea, the Yellow Sea, and the southern sea off Korea. Our results suggest that CDW is of high significance in the biogeochemistry of surface seawater of these northwestern Pacific marginal seas during the summer monsoon period. Key Points The flow rate of CDW is determined using 223Ra as a tracer The relative contribution of CDW is determined using 228Ra and salinity CDW is dominant in large surface areas of northwestern Pacific marginal seas ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904076942&doi=10.1002%2f2014GL060230&partnerID=40&md5=bc0802b5051822c04c43e9f9e32d91fc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7260
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea
Recommended Citation:
Lee H.,Kim G.,Kim J.,et al. Tracing the flow rate and mixing ratio of the Changjiang diluted water in the northwestern Pacific marginal seas using radium isotopes[J]. Geophysical Research Letters,2014-01-01,41(13).