C.A.J. Appelo

TL;DR: A selection of photos from the 2016/17 USGS report on quantitative hazard assessments of earthquake-triggered landsliding and liquefaction in the Czech Republic.

TL;DR: In this paper, a combined geochemical/mixing cell flow model has been developed, based on the computer program eq 3/6 (Wolery, 1982), which has been modified to include cation exchange reactions and is incorporated in a one-dimensional mixing cell model for stationary one dimensional transport Dispersion or diffusion is calculated by mixing the cell contents with neighbouring cells.

TL;DR: In this paper, a mixing cell model was used to calculate transmissivities from the Cl mass balance in the Campina de Faro aquifer, in the south of Portugal, where agricultural practices have a large impact on groundwater composition.

TL;DR: In this paper, a more general and reliable calculation of apparent molar volumes of single ions is presented, based on a modified Redlich-Rosenfeld equation, using the Born equation to calculate the temperature dependence of the intrinsic volumes, following Helgeson-Kirkham-Flowers (HKF), but with Bradley and Pitzer's expression for the dielectric permittivity of water, and using the pressure dependence of extended Debye-Huckel equation to constrain the limiting slope of the molar volume with ionic strength, and adopting the convention

TL;DR: The chromatographic pattern which develops when exchangeable cations are eluted, was modelled with the earlier presented geochemical (multicomponent) transport model as discussed by the authors, and procedures and equipment which can maintain the anaerobic status of the sediments from sampling in the field to subsequent experimentation in the laboratory.