Landslides associated with hillside cuttings in igneous rock saprolites are a serious natural hazard in Hong Kong and have been extensively studied by government agencies and local universities for many years from the perspective of soil and rock engineering. A review of the case studies for some major landslides, especially deep-seated landslides, shows certain puzzling features. First, a numb...

Groundwater flow and nutrient transport were studied in a riparian meadow during a three-year period. The meadow is situated along a first order stream in the River Gjern catchment area, Jutland, Denmark. Field data included measurements of hydraulic head, hydraulic conductivity and soil characteristics. Groundwater sampled from piezometers was analysed for nitrate, ammonium and phosphate. Nitr...

The calibration of natural aquifer model parameters in real world cases is a challenging goal that requires a careful tuning work, whose complexity increases with the number of available data. Paradoxically, instead of making easier the subsurface model numerical assessment, a high spatial density of data highlights the local scale heterogeneity effects, complicating the calibration procedure w...

The infiltration of stream water in the sediment and its return to the stream—a process known here as hyporheic exchange flows (HEF)—is a critical control of the structure and functions of the stream ecosystem. River restoration programmes will increasingly require quantitative methods for evaluating this influence. Previous studies have already shown the potential of numerical groundwater mode...

To quantify ground water denitrification in discrete locations of riparian aquifers, we modified and evaluated an in situ method based on conservative tracers and 15N-enriched nitrate. Ground water was "pushed" (i.e., injected) into a mini-piezometer and then "pulled" (i.e., extracted) from the same mini-piezometer after an incubation period. This push-pull method was applied in replicate mini-...

The conditions in which groundwater inflow occurs boreal peatlands and its contribution to peatland water balance are still poorly understood. objectives of this research were quantify the hydrological connectivity between a surficial aquifer peatland, identify controlling factors north-central Quebec (Canada). instrumented with piezometers levels monitored during two growing seasons. Hydraulic...

Due to spatial unevenness in rainfall, groundwater dependency for irrigation has increased exponentially, which poses a challenge its sustainability. Hence, the long-term behaviour of level (GWL) fluctuations needs be understood better management water resources and formulating new action plan. semi-arid climatic condition, most agricultural lands Malwa region Punjab India depend on irrigation....

Changes in nutrient concentrations groundwater were investigated to determine the impact of agriculture on water quality artificial lakes. The study covered three reservoirs an agricultural area Wielkopolska (central-western part Poland). Assessing required a network piezometers around reservoirs, used degree pollution from nutrients supplied reservoirs. Moreover, analysis streams flowing into ...

Labeling groundwater by injecting an artificial tracer is a standard and widely used method to study flow systems. Noble gases dissolved in are potentially ideal tracers, as they not subject biogeochemical transformations, do adsorb onto the aquifer matrix, colorless, have no negative impact on quality of resources. In addition, combining different noble-gas species multi-tracer tests would all...