中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院页岩气与地质工程重点实验室
Origin and geochemical evolution of groundwater in the Abaya Chamo basin of the Main Ethiopian Rift: application of multi-tracer approaches

文献类型：期刊论文

作者Haji, Muhammed1,2,3; Qin, Dajun2,3; Guo, Yi2,3; Li, Lu2,3; Wang, Dongdong2,3; Karuppannan, Shankar1; Shube, Hassen1
刊名HYDROGEOLOGY JOURNAL
出版日期2021-01-28
页码20
ISSN号1431-2174
关键词Volcanic aquifer Hydrochemistry Stable isotopes Water Rock interaction Groundwater flow Ethiopia
DOI10.1007/s10040-020-02291-y
英文摘要The fractured volcanic aquifer of the Abaya Chamo basin in the southern Ethiopian Rift represents an important source for water supply. This study investigates the geochemical evolution of groundwater and the groundwater flow system in this volcanic aquifer system using hydrochemistry and environmental tracers. Water types of groundwater were found to transform from Ca-Mg-HCO3 (western part of Lake Abaya area) to Na-HCO3 (northwestern part), from the highland down to the Rift Valley. Silicate hydrolysis and Ca/Na ion exchange are the major geochemical processes that control groundwater chemistry along the flow path. Groundwaters are of meteoric origin. The delta O-18 and delta D content of groundwater ranges from -4.9 to -1.1 parts per thousand and -27 to 5 parts per thousand, respectively. The delta O-18 and delta D values that lie on the summer local meteoric water line indicate that the groundwater was recharged mainly by summer rainfall. delta C-13(DIC) values of cold groundwater range from -12 to -2.7 parts per thousand, whereas delta C-13(DIC) of thermal groundwater ranges from -8.3 to +1.6 parts per thousand. The calculated delta C-13(CO2(g)) using delta C-13(DIC) and DIC species indicates the uptake of soil CO2 for cold groundwater and the influx of magmatic CO2 through deep-seated faults for thermal groundwater. In the western part of Lake Abaya area, the shallow and deep groundwater are hydraulically connected, and the uniform water type is consistent with a fast flow of large gradient. In contrast, in the northern part of Lake Abaya area, water underwent deep circulation and slow flow, so the water types-e.g. high F- (up to 5.6 mg/L) and Na+-varied laterally and vertically.
资助项目CAS-TWAS President's Fellowship program
WOS研究方向Geology ; Water Resources
语种英语
出版者SPRINGER
WOS记录号WOS:000612604300001
资助机构CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program ; CAS-TWAS President's Fellowship program
源URL[http://ir.iggcas.ac.cn/handle/132A11/100046]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Haji, Muhammed
作者单位1.Adama Sci & Technol Univ, Sch Appl Nat Sci, POB 1888, Adama, Ethiopia
2.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Haji, Muhammed,Qin, Dajun,Guo, Yi,et al. Origin and geochemical evolution of groundwater in the Abaya Chamo basin of the Main Ethiopian Rift: application of multi-tracer approaches[J]. HYDROGEOLOGY JOURNAL,2021:20.
APA Haji, Muhammed.,Qin, Dajun.,Guo, Yi.,Li, Lu.,Wang, Dongdong.,...&Shube, Hassen.(2021).Origin and geochemical evolution of groundwater in the Abaya Chamo basin of the Main Ethiopian Rift: application of multi-tracer approaches.HYDROGEOLOGY JOURNAL,20.
MLA Haji, Muhammed,et al."Origin and geochemical evolution of groundwater in the Abaya Chamo basin of the Main Ethiopian Rift: application of multi-tracer approaches".HYDROGEOLOGY JOURNAL (2021):20.

入库方式： OAI收割

来源：地质与地球物理研究所

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。