Results 51 to 60 of about 320,219 (409)
Characterising aquifer treatment for pathogens in managed aquifer recharge
Water Science and Technology, 2010 In this study the value of subsurface treatment of urban stormwater during Aquifer Storage Transfer Recovery (ASTR) is characterised using quantitative microbial risk assessment (QMRA) methodology. The ASTR project utilizes a multi-barrier treatment train to treat urban stormwater but to date the role of the aquifer has not been quantified.
Simon Toze +4 more
openaire +4 more sources
Groundwater age, life expectancy and transit time distributions in advective-dispersive systems: 1. Generalized reservoir theory [PDF]
Advances in Water Resources 29 (2006) 1267-1291, 2011 We present a methodology for determining reservoir groundwater age and transit time probability distributions in a deterministic manner, considering advective-dispersive transport in steady velocity fields. In a first step, we propose to model the statistical distribution of groundwater age at aquifer scale by means of the classical advection ...
arxiv +1 more source
Molybdenum Mobility During Managed Aquifer Recharge in Carbonate Aquifers
Environmental Science & Technology, 2023 The mobility of molybdenum (Mo) in groundwater systems has received little attention, although a high intake of Mo is known to be detrimental to human and animal health. Here, we used a comprehensive hydrochemical data set collected during a multi-cycle aquifer storage and recovery test to study the mechanisms that control the mobility of Mo under ...
Sarah Koopmann +3 more
openaire +2 more sources
Remediation Journal, Volume 33, Issue 1, Page 3-23, Winter 2022., 2022 Abstract A review of state per‐ and polyfluoroalkyl substances (PFAS) guidelines indicates that four long‐chain PFAS (perfluorooctanesulfonic acid [PFOS] and perfluorooctanoic acid [PFOA] followed by perfluorohexanesulfonic acid [PFHxS] and perfluorononanoic acid [PFNA]) are the most frequently regulated PFAS compounds.
Grant R. Carey +6 more
wiley +1 more source
Unconfined Aquifer Flow Theory - from Dupuit to present [PDF]
, 2013 Analytic and semi-analytic solution are often used by researchers and practicioners to estimate aquifer parameters from unconfined aquifer pumping tests. The non-linearities associated with unconfined (i.e., water table) aquifer tests makes their analysis more complex than confined tests.
arxiv +1 more source
When Do Complex Transport Dynamics Arise in Natural Groundwater Systems? [PDF]
Water Resources Research 2020, 2019 In a recent paper (Trefry et al., 2019) we showed that the interplay of aquifer heterogeneity and poroelasticity can produce complex transport in tidally forced aquifers, with significant implications for solute transport, mixing and reaction. However, what was unknown was how broadly these transport dynamics can arise in natural groundwater systems ...
arxiv +1 more source
Drainage of Southeast Greenland Firn Aquifer Water through Crevasses to the Bed
Frontiers in Earth Science, 2017 A firn aquifer in the Helheim Glacier catchment of Southeast Greenland lies directly upstream of a crevasse field. Previous measurements show that a 3.5-km long segment of the aquifer lost a large volume of water (26,000 – 65,000 m2 in cross section ...
K. Poinar +5 more
semanticscholar +1 more source
Геохімія техногенезу, 2021 The article presents the physical and geographical characteristics of the Synychan water intake section of the Izium water intake, which is located 8 km southeast of the city of Izium, Kharkiv region.
I. Udalov,, D. Piatash
doaj +1 more source
, 2016 Projected longer-term droughts and intense floods underscore the need to store more water to manage climate extremes. Here we show how depleted aquifers have been used to store water by substituting surface water use for groundwater pumpage (conjunctive ...
B. Scanlon +4 more
semanticscholar +1 more source
Determination of In Situ Bacterial Growth Rates in Aquifers and Aquifer Sediments [PDF]
Applied and Environmental Microbiology, 2003 ABSTRACTLaboratory and field-scale studies with stained cells were performed to monitor cell growth in groundwater systems. During cell division, the fluorescence intensity of the protein stain 5-(and 6-)-carboxyfluorescein diacetate succinimidyl ester (CFDA/SE) for each cell is halved, and the intensity can be tracked with a flow cytometer.
Mark E. Fuller, Brian J. Mailloux
openaire +3 more sources