Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084767 |
High-Arsenic Groundwater in the Southwestern Bengal Basin Caused by a Lithologically Controlled Deep Flow System | |
Khan, M. R.1,6; Michael, H. A.1,2; Nath, B.3; Huhmann, B. L.4; Harvey, C. F.4; Mukherjee, A.5; Choudhury, I.6; Chakraborty, M.5; Ullah, M. S.7; Ahmed, K. M.6; Goodbred, S. L.7; Schlosser, P.3; Bostick, B. C.3; Mailloux, B. J.8; Ellis, T.3; van Geen, A.3 | |
2019-11-29 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:22页码:13062-13071 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; India; Bangladesh |
英文摘要 | Elevated arsenic in Bengal Basin aquifers threatens human health. Most deep (>150 m) groundwater in Pleistocene aquifers is low in arsenic; however higher concentrations have been reported in the southwest border region. Here, we establish that this extensive arsenic contamination at depth is not associated with well failure. A combination of geochemistry and flow modeling constrains the factors that contribute to arsenic contamination at depth in this region. Deep groundwater in the affected area is younger (2.0 +/- 0.6 kyr) than deep, low-arsenic groundwater elsewhere (12.0 +/- 4.0 kyr) based on radiocarbon. Stratigraphic data indicate pre-Holocene deposition of the contaminated aquifers, but few low-permeability strata. Numerical modeling indicates that this stratigraphic anomaly permits a natural flow system that transports shallow groundwater to depth. Thus, in areas lacking low-permeability layers, arsenic contamination can occur in pre-Holocene aquifers and is probably not an early sign of future deep contamination in regions with interbedded low-permeability strata. |
英文关键词 | arsenic groundwater Bengal Basin groundwater dating groundwater modeling water resources |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000499304400001 |
WOS关键词 | AQUIFER SYSTEM ; WEST-BENGAL ; DRINKING-WATER ; BANGLADESH ; CONTAMINATION ; RECHARGE ; INDIA ; VULNERABILITY ; POLLUTION ; EXPOSURE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/225132 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Delaware, Dept Earth Sci, Newark, DE 19716 USA; 2.Univ Delaware, Dept Civil & Environm Engn, Newark, DE 19716 USA; 3.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA; 4.MIT, Dept Civil & Environm Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA; 5.IIT Kharagpur, Dept Geol & Geophys, Kharagpur, W Bengal, India; 6.Univ Dhaka, Dept Geol, Dhaka, Bangladesh; 7.Vanderbilt Univ, Dept Earth & Environm Sci, 221 Kirkland Hall, Nashville, TN 37235 USA; 8.Columbia Univ Barnard Coll, New York, NY USA |
推荐引用方式 GB/T 7714 | Khan, M. R.,Michael, H. A.,Nath, B.,et al. High-Arsenic Groundwater in the Southwestern Bengal Basin Caused by a Lithologically Controlled Deep Flow System[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(22):13062-13071. |
APA | Khan, M. R..,Michael, H. A..,Nath, B..,Huhmann, B. L..,Harvey, C. F..,...&van Geen, A..(2019).High-Arsenic Groundwater in the Southwestern Bengal Basin Caused by a Lithologically Controlled Deep Flow System.GEOPHYSICAL RESEARCH LETTERS,46(22),13062-13071. |
MLA | Khan, M. R.,et al."High-Arsenic Groundwater in the Southwestern Bengal Basin Caused by a Lithologically Controlled Deep Flow System".GEOPHYSICAL RESEARCH LETTERS 46.22(2019):13062-13071. |
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