Entrapped gas bubbles in peat can alter the buoyancy, storativity, void ratio and expansion/contraction properties of the peat. Moreover, when gas bubbles block water-conducting pores they can significantly reduce saturated hydraulic conductivity and create zones of over-pressuring, perhaps leading to an alteration in the magnitude and direction of groundwater flow and solute transport. Some pr...

It is hypothesized that overland flow from urbanizing and agricultural land uses will enhance stream-groundwater interactions. Near-channel groundwater chemistry and hydraulics were studied during runoff events to test this hypothesis and to increase the understanding of hyporheic processes important to stream chemistry and ecology. Twenty-four piezometers (0.3to 1-meter depth) were installed a...

18 Groundwater contamination was characterised using a methodology which combines 19 shallow groundwater geochemistry data from 17 piezometers over a 2 yr period in a 20 statistical framework and hydrogeological techniques. Nitrate-N (NO3-N) 21 contaminant mass flux was calculated across three control planes (rows of 22 piezometers) in six isolated plots. Results showed natural attenuation occu...

Transport between pore waters and overlying surface waters of Flamengo Bay near Ubatuba, Brazil, was quantified using natural and artificial geochemical tracers, Rn, Cl , and SF6, collected from multi-level piezometers installed along a transect perpendicular to the shore. Eight sampling ports positioned along the length of the piezometers allowed sampling of pore waters at discrete depth inter...

22 Groundwater contamination was characterised using a methodology which combines 23 shallow groundwater geochemistry data from 17 piezometers over a 2 yr period in a 24 statistical framework and hydrogeological techniques. Nitrate-N (NO3-N) 25 contaminant mass flux was calculated across three control planes (rows of 26 piezometers) in six isolated plots. Results showed natural attenuation occu...

A contaminated site related to a former coke factory, located in the alluvial plain of the Meuse River near Liège was investigated to characterize the nature and extend of underground contamination. The major objective of the investigation was to evaluate whether an interaction exists, at the level of this particular site, between groundwater and surface water, despite the existence of river em...

The dam of the reservoir Cuibul Vulturilor, located on Tutova river is an inhomogeneous earth with a maximum height 15.0 m, clayey central core and lateral prisms made clayey-dusty sands. For tracking evolution body seepage, 12 piezometers drainage pipe discharge in downstream connection channel bottom outlet are used. paper presents characteristic elements theoretical infiltration curve It als...

[1] A method of transfer function-noise (TFN) modeling is presented that operates in continuous time and uses a predefined family of impulse response (IR) functions. The resulting class of models is referred to as predefined IR function in continuous time (PIRFICT). It provides a useful tool for standardized analysis of time series, as it can be calibrated using irregularly spaced data and does...

Knowledge of the magnitude of differential stress and strain rate during the formation of mylonitic shear zones in metamorphic ore complexes provides constraints on the mechanical behavior of the middle continental crust during extension. We analyzed the differential flow stress during the mylonitization of quartzofeldspathic rocks in the Whipple Mountains, California, using grain-size piezomet...