Results 201 to 210 of about 17,885 (258)

Water Conduction and Production Mechanisms in Coal Measure Strata: Key Insights from a Typical Case Study. [PDF]

ACS Omega
Chang S, Gao G, Liu Y, Yan T, Zhang S, Meng Y, Yan X, Zhao D, Zhang C.   +8 more
europepmc   +1 more source

Microplastics as Emerging Cotracers in Groundwater Quality Assessments. [PDF]

ACS ES T Water
Zambelli B, Pemberton E, Viaroli S, Krause S, Giannecchini R, Re V.   +5 more
europepmc   +1 more source

Machine learning as an interpretive consistency approach for coupling geochemical and geophysical domains in data-limited landfills. [PDF]

PNAS Nexus
Costanzo-Álvarez V, Jácome M, Aldana M, Trigo-Ferre R, Jeffrey M, Costanzo VL, Izarra-Jácome A, Amon CH.   +7 more
europepmc   +1 more source

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Aquifer parameter prediction in leaky aquifers

Journal of Hydrology, 1985
Abstract The finite element—least-squares optimization algorithm is utilized to identify the hydrogeologic field parameters of a multi-layer aquifer system. The technique developed relies on accurate steady state piezometric head data for each aquifer in the multi-layered system.
openaire   +1 more source

Aquifer storage and recovery, and managed aquifer recharge of reclaimed water for management of coastal aquifers

DESALINATION AND WATER TREATMENT, 2020
The hydrological and economic feasibility of aquifer storage and recovery (ASR) of excess desali-nated water and managed aquifer recharge (MAR) using tertiary treated wastewater (TTWW) to manage stressed coastal aquifers in Oman has been studied numerically using the code, MODFLOW 2005 and the different transport packages MT3DMS, and MODPATH.
Al-Maktoumi A., Zekri S., El-Rawy M., Abdalla O., Al-Abri R., Triki C., Bazargan-Lari M. R.   +6 more
openaire   +1 more source

A Leaky Aquifer Model For Hard Rock Aquifers

Hydrogeology Journal, 1994
A comparison is made between the unsteady parallel fracture model using the double porosity approach and the anisotropic aquifer-water table aquitard system. The presence of a moving water table in the weathered zone (unconfined block), influenced by recharge from rainfall or other sources and leakage to the fracture zone, is discussed.
M. Sekhar, M. S. Mohan Kumar, K. Sridharan   +2 more
openaire   +1 more source

Mapping Aquifer Vulnerability

Symposium on the Application of Geophysics to Engineering and Environmental Problems 2006, 2006
In this presentation, we discuss geophysical methods for general vulnerability mapping of aquifers. The vulnerability of aquifers is to a large degree determined by the content of clay minerals in the near surface geology. Clay minerals have a large cation exchange capacity (CEC) and clayey sediments reduce the infiltration speed thus reducing the ...
Kurt Sørensen, Esben Auken, Anders V. Christiansen, Nikolaj Foged   +3 more
openaire   +1 more source

Estimation of Aquifer Diffusivity in Stream-Aquifer Systems

Journal of the Hydraulics Division, 1977
By specifying an extra boundary condition in terms of hydraulic gradient at the stream-aquifer interface, and using the Green’s function of the linearized Boussinesq equation, analytical solutions have been developed to determine aquifer diffusivity explicitly. Four different types of Dirichlet boundary condition describing stream gage hydrographs have
Sita Ram Singh, Budhi Sagar
openaire   +1 more source

Estrogen in a Karstic Aquifer

Groundwater, 2004
Abstract Adverse impacts on the health of some fish populations, such as skewed sex distributions, have been noted in surface waters and in laboratory experiments with relatively low concentrations (above 25 ng/L) of natural estrogen (17 β‐estradiol—E2). Sources of E2 to surface and ground waters can include avian,
Carol, Wicks, Cheryl, Kelley, Eric, Peterson   +2 more
openaire   +2 more sources