Subsurface hydrological processes and groundwater residence time in a coastal alluvium aquifer: Evidence from environmental tracers (delta O-18, delta H-2, CFCs, H-3) combined with hydrochemistry
文献类型：期刊论文
| 作者 | Cao, Tianzheng1,3,4; Han, Dongmei1,3,4,5 ; Song, Xianfang1,3,4,5; Trolle, Dennis2
|
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-11-15 |
| 卷号 | 743页码:16 |
| 关键词 | Seawater intrusion Groundwater age dating Coastal aquifer Stable isotope Hydrochemistry |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.140684 |
| 通讯作者 | Han, Dongmei(handm@igsiirr.ac.cn) |
| 英文摘要 | As an important part of the water cycle, the hydrologic process and chemical compositions of groundwater have changed significantly due to the joint influence of climate change and human activities. Groundwater salinization becomes a serious threat to water security in coastal areas. In order to assess the relationships between surface water, groundwater and seawater in the coastal plain, we performed a synthesis study based on hydrochemical-isotopic data, hydro-dynamical records and environmental tracers. Deuterium and oxygen isotopes and water chemical indicators were used to identify pollution status, salt sources and migration processes. Radioactive isotopes and gaseous tracers were used to obtain reasonable groundwater age. With the help of multi-tracer approach, the surface-groundwater interaction, salinization of groundwater and nitrate pollution were identified in the Yang-Dai River plain, northern China. The estimated groundwater ages determined from chlorofluorocarbons (CFCs) and tritium (H-3) ranges from 18 to 41 years in this area, suggesting a modern groundwater circulation. The spatial distribution of the groundwater age varies significantly due to horizontal hydrogeological heterogeneity. The total dissolved solids (TDS) content of the groundwater near the Well Field (average: 970 mg/L) was higher than the TDS values in samples derived from places located at an equivalent distance to the coastal line (average is 708 mg/L), which resulted from the vertical seawater intrusion through river channels and pollutant inputs from agriculture activities. The nitrate concentrations in groundwater were elevated up to 271 mg/Land increased with increasing groundwater age, which was another water environment problem that should be solved urgently but lacks sufficient attention for years. This study provides a conceptual model with a number of comparable hydrochemical information, which is significant for regional pollution control and water resources management. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | SEA-WATER INTRUSION ; MEAN TRANSIT TIMES ; SEAWATER INTRUSION ; STABLE-ISOTOPES ; SHALLOW GROUNDWATER ; IRRIGATION WATER ; PLAIN AQUIFER ; LAIZHOU BAY ; RIVER-BASIN ; AGE |
| 资助项目 | Outstanding Member Program of the Youth Innovation Promotion Association, CAS[2012040] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000573540400010 |
| 出版者 | ELSEVIER |
| 资助机构 | Outstanding Member Program of the Youth Innovation Promotion Association, CAS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/156993]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Han, Dongmei |
| 作者单位 | 1.Sino Danish Ctr Educ & Res, Beijing 10019, Peoples R China 2.Aarhus Univ, Dept Biosci, Vejlsovej, Silkeborg, Denmark 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China 5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Tianzheng,Han, Dongmei,Song, Xianfang,et al. Subsurface hydrological processes and groundwater residence time in a coastal alluvium aquifer: Evidence from environmental tracers (delta O-18, delta H-2, CFCs, H-3) combined with hydrochemistry[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,743:16. |
| APA | Cao, Tianzheng,Han, Dongmei,Song, Xianfang,&Trolle, Dennis.(2020).Subsurface hydrological processes and groundwater residence time in a coastal alluvium aquifer: Evidence from environmental tracers (delta O-18, delta H-2, CFCs, H-3) combined with hydrochemistry.SCIENCE OF THE TOTAL ENVIRONMENT,743,16. |
| MLA | Cao, Tianzheng,et al."Subsurface hydrological processes and groundwater residence time in a coastal alluvium aquifer: Evidence from environmental tracers (delta O-18, delta H-2, CFCs, H-3) combined with hydrochemistry".SCIENCE OF THE TOTAL ENVIRONMENT 743(2020):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。