Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR022456 |
Using Tidal Fluctuation-Induced Dynamics of Radium Isotopes (Ra-224, Ra-223, and Ra-228) to Trace the Hydrodynamics and Geochemical Reactions in a Coastal Groundwater Mixing Zone | |
Liu, Yi1,2; Jiao, Jiu Jimmy1,2; Liang, Wenzhao1,2; Luo, Xin1,2 | |
2018-04-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:4页码:2909-2930 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The reactive transport of radium isotopes (Ra-224, Ra-223, and Ra-228) in coastal groundwater mixing zones (CGMZs) is sensitive to shifts of redox conditions and geochemical reactions induced by tidal fluctuation. This study presents a spatial distribution and temporal variation of radium isotopes in the CGMZ for the first time. Results show that the activity of radium isotopes in the upper saline plume (USP) is comparatively low due to a short residence time and mixing loss induced by the infiltration of low radium seawater whereas the activity of radium isotopes in the salt wedge (SW) is comparatively high due to a long residence time in the aquifer. The spatial distribution of radium isotopes is determined by the partitioning of radium isotopes, groundwater residence time, and relative ingrowth rates of radium isotopes. In addition, the variation of radium isotopes in the USP lags slightly (similar to 0 h) whereas the fluctuation of radium isotopes in the SW lags significantly (similar to 12 h) behind sea level oscillation. Tidal fluctuation affects the partitioning of radium isotopes through controlling seawater infiltration and subsequently influences the dynamics of radium isotopes in the USP. Concurrently, seawater infiltration significantly affects geochemical processes such as the production of nutrients and total alkalinity. Therefore, radium dynamics in the USP have implications for these geochemical processes. The variation of radium isotopes in the USP also has potential implications for transformation of trace metals such as iron and manganese because of the close affinity of radium isotopes to manganese and iron oxides. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434186400023 |
WOS关键词 | DELAYED COINCIDENCE COUNTER ; DISSOLVED INORGANIC CARBON ; SUBMARINE GROUNDWATER ; SUBTERRANEAN ESTUARY ; RA-224/TH-228 DISEQUILIBRIUM ; PORE-WATER ; HONG-KONG ; DEAD-SEA ; SEAWATER CIRCULATION ; NUTRIENT LOADINGS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21525 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China; 2.Univ Hong Kong, Shenzhen Res Inst, Shenzhen, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Yi,Jiao, Jiu Jimmy,Liang, Wenzhao,et al. Using Tidal Fluctuation-Induced Dynamics of Radium Isotopes (Ra-224, Ra-223, and Ra-228) to Trace the Hydrodynamics and Geochemical Reactions in a Coastal Groundwater Mixing Zone[J]. WATER RESOURCES RESEARCH,2018,54(4):2909-2930. |
APA | Liu, Yi,Jiao, Jiu Jimmy,Liang, Wenzhao,&Luo, Xin.(2018).Using Tidal Fluctuation-Induced Dynamics of Radium Isotopes (Ra-224, Ra-223, and Ra-228) to Trace the Hydrodynamics and Geochemical Reactions in a Coastal Groundwater Mixing Zone.WATER RESOURCES RESEARCH,54(4),2909-2930. |
MLA | Liu, Yi,et al."Using Tidal Fluctuation-Induced Dynamics of Radium Isotopes (Ra-224, Ra-223, and Ra-228) to Trace the Hydrodynamics and Geochemical Reactions in a Coastal Groundwater Mixing Zone".WATER RESOURCES RESEARCH 54.4(2018):2909-2930. |
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