Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s10040-011-0745-y |
The effects of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in a hard-rock aquifer, southern India | |
Perrin, Jerome1; Ahmed, Shakeel2; Hunkeler, Daniel3 | |
通讯作者 | Perrin, Jerome |
来源期刊 | HYDROGEOLOGY JOURNAL
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ISSN | 1431-2174 |
出版年 | 2011 |
卷号 | 19期号:6页码:1189-1201 |
英文摘要 | Crystalline aquifers of semi-arid southern India represent a vital water resource for farming communities. A field study is described that characterizes the hydrodynamic functioning of intensively exploited crystalline aquifers at local scale based on detailed well monitoring during one hydrological year. The main results show large water-table fluctuations caused by monsoon recharge and pumping, high spatial variability in well discharges, and a decrease of well yields as the water table decreases. Groundwater chemistry is also spatially variable with the existence of aquifer compartments within which mixing occurs. The observed variability and compartmentalization is explained by geological heterogeneities which play a major role in controlling groundwater flow and connectivity in the aquifer. The position of the water table within the fracture network will determine the degree of connectivity between aquifer compartments and well discharge. The presented aquifer conceptual model suggests several consequences: (1) over-exploitation leads to a drop in well discharge, (2) intensive pumping may contribute to the hydraulic containment of contaminants, (3) groundwater quality is highly variable even at local scale, (4) geological discontinuities may be used to assist in the location of drinking-supply wells, (5) modeling should integrate threshold effects due to water-table fluctuations. |
英文关键词 | Crystalline rocks Heterogeneity India Discontinuity Conceptual model |
类型 | Article |
语种 | 英语 |
国家 | India ; Switzerland |
收录类别 | SCI-E |
WOS记录号 | WOS:000294707100008 |
WOS关键词 | CRYSTALLINE-ROCK ; POTENTIAL ZONES ; LINEAMENTS ; BOREHOLE ; EXPLORATION ; NETWORK ; SINGLE ; SCALES ; TESTS ; YIELD |
WOS类目 | Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Geology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/168412 |
作者单位 | 1.BRGM, Water Div, Discontinuous Aquifers Unit, Indo French Ctr Groundwater Res, Hyderabad 500606, Andhra Pradesh, India; 2.Natl Geophys Res Inst, Indo French Ctr Groundwater Res, Hyderabad 500606, Andhra Pradesh, India; 3.Univ Neuchatel, Ctr Hydrogeol & Geotherm CHYN, CH-2009 Neuchatel, Switzerland |
推荐引用方式 GB/T 7714 | Perrin, Jerome,Ahmed, Shakeel,Hunkeler, Daniel. The effects of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in a hard-rock aquifer, southern India[J],2011,19(6):1189-1201. |
APA | Perrin, Jerome,Ahmed, Shakeel,&Hunkeler, Daniel.(2011).The effects of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in a hard-rock aquifer, southern India.HYDROGEOLOGY JOURNAL,19(6),1189-1201. |
MLA | Perrin, Jerome,et al."The effects of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in a hard-rock aquifer, southern India".HYDROGEOLOGY JOURNAL 19.6(2011):1189-1201. |
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