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VULNERABILITY OF LOW-ARSENIC AQUIFERS TO MUNICIPAL PUMPING IN BANGLADESH.
Knappett PSK, Mailloux BJ, Choudhury I, Khan MR, Michael HA, Barua S, Mondal DR, Steckler MS, Akhter SH, Ahmed KM, Bostick B, Harvey CF, Shamsudduha M, Shuai P, Mihajlov I, Mozumder R, van Geen A. Knappett PSK, et al. J Hydrol (Amst). 2016 Aug;539:674-686. doi: 10.1016/j.jhydrol.2016.05.035. Epub 2016 May 24. J Hydrol (Amst). 2016. PMID: 28966395 Free PMC article.
This study concerns the potential risk of contaminating these aquifers in areas surrounding the city of Dhaka where hydraulic heads in aquifers >150 m deep have dropped by 70 m in a few decades due to municipal pumping. Water levels measured continuously from 201 …
This study concerns the potential risk of contaminating these aquifers in areas surrounding the city of Dhaka where hydraulic heads in aquif …
Rapid groundwater decline and some cases of recovery in aquifers globally.
Jasechko S, Seybold H, Perrone D, Fan Y, Shamsudduha M, Taylor RG, Fallatah O, Kirchner JW. Jasechko S, et al. Nature. 2024 Jan;625(7996):715-721. doi: 10.1038/s41586-023-06879-8. Epub 2024 Jan 24. Nature. 2024. PMID: 38267682 Free PMC article.
Here we analyse in situ groundwater-level trends for 170,000 monitoring wells and 1,693 aquifer systems in countries that encompass approximately 75% of global groundwater withdrawals(18). We show that rapid groundwater-level declines (>0.5 m year(-1)) are widespread in …
Here we analyse in situ groundwater-level trends for 170,000 monitoring wells and 1,693 aquifer systems in countries that encompass approxim …
Community wells to mitigate the arsenic crisis in Bangladesh.
van Geen A, Ahmed KM, Seddique AA, Shamsudduha M. van Geen A, et al. Bull World Health Organ. 2003;81(9):632-8. Epub 2003 Nov 14. Bull World Health Organ. 2003. PMID: 14710504 Free PMC article.
OBJECTIVE: To monitor the effectiveness of deep community wells in reducing exposure to elevated levels of arsenic in groundwater pumped from shallower aquifers. METHODS: Six community wells ranging in depth from 60 m to 140 m were installed in villages where very f …
OBJECTIVE: To monitor the effectiveness of deep community wells in reducing exposure to elevated levels of arsenic in groundwater pumped fro …
A generalized regression model of arsenic variations in the shallow groundwater of Bangladesh.
Shamsudduha M, Taylor RG, Chandler RE. Shamsudduha M, et al. Water Resour Res. 2015 Jan;51(1):685-703. doi: 10.1002/2013WR014572. Epub 2015 Jan 28. Water Resour Res. 2015. PMID: 27524841 Free PMC article.
Localized studies of arsenic (As) in Bangladesh have reached disparate conclusions regarding the impact of irrigation-induced recharge on As concentrations in shallow (50 m below ground level) groundwater. We construct generalized regression models (GRMs) to describe obser …
Localized studies of arsenic (As) in Bangladesh have reached disparate conclusions regarding the impact of irrigation-induced recharge on As …
Quaternary stratigraphy, sediment characteristics and geochemistry of arsenic-contaminated alluvial aquifers in the Ganges-Brahmaputra floodplain in central Bangladesh.
Shamsudduha M, Uddin A, Saunders JA, Lee MK. Shamsudduha M, et al. J Contam Hydrol. 2008 Jul 29;99(1-4):112-36. doi: 10.1016/j.jconhyd.2008.03.010. Epub 2008 Apr 10. J Contam Hydrol. 2008. PMID: 18502538
Groundwater is mainly Ca-HCO(3) type with high concentrations of dissolved As, Fe, and Mn, but low level of SO(4). The uppermost aquifer occurs between 10 m and 80 m below the surface that has a mean arsenic concentration of 35 microg/L. ...High arsenic concentratio …
Groundwater is mainly Ca-HCO(3) type with high concentrations of dissolved As, Fe, and Mn, but low level of SO(4). The uppermost aquifer occ …
Temporal variability of groundwater chemistry in shallow and deep aquifers of Araihazar, Bangladesh.
Dhar RK, Zheng Y, Stute M, van Geen A, Cheng Z, Shanewaz M, Shamsudduha M, Hoque MA, Rahman MW, Ahmed KM. Dhar RK, et al. J Contam Hydrol. 2008 Jul 29;99(1-4):97-111. doi: 10.1016/j.jconhyd.2008.03.007. Epub 2008 Mar 26. J Contam Hydrol. 2008. PMID: 18467001 Free PMC article.
In shallow wells <30 m deep, As and P concentrations generally varied by <30%, whereas concentrations of the major ions (Na, K, Mg, Ca and Cl) and the redox-sensitive elements (Fe, Mn, and S) varied over time by up to +/-90%. In wells tapping the deeper aquifers > …
In shallow wells <30 m deep, As and P concentrations generally varied by <30%, whereas concentrations of the major ions (Na, K, …