Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s12665-018-7403-9 |
Corroborating stable isotopic data with pumping test data to investigate recharge and groundwater flow processes in a fractured rock aquifer, Rivirivi Catchment, Malawi | |
Kambuku, Dwight1; Tsujimura, Maki1; Kagawa, Shigeyoshi2; Mdala, Hassan3 | |
通讯作者 | Kambuku, Dwight |
来源期刊 | ENVIRONMENTAL EARTH SCIENCES
![]() |
ISSN | 1866-6280 |
EISSN | 1866-6299 |
出版年 | 2018 |
卷号 | 77期号:6 |
英文摘要 | Fractured rock aquifers continue to support millions of people in arid and semiarid regions. However, due to heterogeneous nature of their hydrogeology and comparative low yields, research in these formations is regarded expensive, and thus, very little is known about their dominant hydrological processes. In this study, we corroboratively used pumping test and stable isotopic data to understand groundwater recharge and flow processes in fractured hornblende-biotite-gneiss. It was established that rain is the main source of groundwater recharge. The groundwater system seems to retain the stable isotopic signatures of precipitation which has undergone evaporation before infiltration. Geochemical data also show that the groundwater system has not undergone pronounced geochemical evolution as evidenced by low total dissolved solids in both seasons. A combination of stable isotopic data and derivative plots of drawdown data helped identification of apparent recharge zones, no-flow boundaries and dominant flow types in the pumped wells with bilinear flow being the dominant type of flow in BP1 and BP2, while linear flow was dominant in BP3 and BP4. Geochemical, stable isotopic and hydraulic data further revealed hydraulic connection between two wells juxtaposed across Ntcheu Fault, indicating potential for groundwater flow across the fault and highlighting that the fault may be acting as a groundwater conduit across it. The established phenomena are important when considering groundwater development and sustainable management of the resource. |
英文关键词 | Fractured rock aquifer Groundwater recharge Groundwater flow Stable isotopes Pumping test Malawi |
类型 | Article |
语种 | 英语 |
国家 | Japan ; Malawi |
收录类别 | SCI-E |
WOS记录号 | WOS:000428780300009 |
WOS关键词 | RESERVOIRS ; CHINA ; INDIA ; PLAIN ; RIVER ; HYDROGEOCHEMISTRY ; HYDROGEOLOGY ; SALINIZATION ; EVOLUTION ; AFRICA |
WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/208978 |
作者单位 | 1.Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki, Japan; 2.Soc Researchers Int Dev, Tokyo, Japan; 3.Geol Surveys Dept, Mwanza, Malawi |
推荐引用方式 GB/T 7714 | Kambuku, Dwight,Tsujimura, Maki,Kagawa, Shigeyoshi,et al. Corroborating stable isotopic data with pumping test data to investigate recharge and groundwater flow processes in a fractured rock aquifer, Rivirivi Catchment, Malawi[J],2018,77(6). |
APA | Kambuku, Dwight,Tsujimura, Maki,Kagawa, Shigeyoshi,&Mdala, Hassan.(2018).Corroborating stable isotopic data with pumping test data to investigate recharge and groundwater flow processes in a fractured rock aquifer, Rivirivi Catchment, Malawi.ENVIRONMENTAL EARTH SCIENCES,77(6). |
MLA | Kambuku, Dwight,et al."Corroborating stable isotopic data with pumping test data to investigate recharge and groundwater flow processes in a fractured rock aquifer, Rivirivi Catchment, Malawi".ENVIRONMENTAL EARTH SCIENCES 77.6(2018). |
条目包含的文件 | 条目无相关文件。 |
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。