Factors that strongly affect the evolution of stream-groundwater relationships are discussed including changes in stream stages, the declines of the water table curves, stream geometries, streambed clogging and aquifer heterogeneity. Then a new concept of a disconnected stream with aquifer is given ...
Pumping tests (aquifer performance tests) are used in groundwater hydrology to determine the hydraulic properties of confined, leaky confined, unconfined and fractured aquifers.
We hypothesized that tidal pumping plays an intertidal zones via regulating the transportation oimf npuotrrtieannttsraoslewienllmasedelieactitnrognthdeonNoOrs3−a-nrdedaucccienpgteprsr,obceassseedsoinn marsh hydrology17. The Yangtze Estuary was selected as our study area to test this hypothesis (...
They can thus be represented by a single type curve or a family of a relatively few type curves. The plausible relative errors in T, S, and η estimated from wellbore drawdown rapidly decrease during the wellbore storage phase and reach a plateau or slowly decrease outside the wellbore ...
For analyses of pumping tests, type curves are presented that enable to estimate aquifer transmissivity, storage coefficients of the fissures and matrix and conductance for fluid exchange between the fissures and matrix. The analytical solution is also linked to a non-linear least squares optimisation...
Pumping tests in wells that partially penetrate aquifers have been evaluated by means of type curves and a simplified solution of nonsteady flow. The influence of skin effect on pumping tests in the partially penetrating wells and the application of the method to unconfined aquifers are discussed....
type curvesThe properties of heterogeneous media vary spatially in a manner that can seldom be described with certainty. It may, however, be possible to describe the spatial variability of these properties in terms of geostatistical parameters such as mean, integral (spatial correlation) scale, and...
Hydrology: Groundwater hydrologyInterpretation of pumping tests to estimate hydraulic parameter values is typically based on the assumption of aquifer homogeneity. The applicability of the traditional methods of interpretation in real aquifers can be questioned, since the evaluation of the drawdown curves ...
To determine aquifer parameters, the Dar-Zarrouk parameters were calculated from the interpreted curves, yielding crucial information about hydraulic properties such as hydraulic conductivity (K) and transmissivity (T). Hydraulic conductivity values ranged from 1.1 m/day to 21.7 m/day, while ...
Moreover, void ratio (e)-compression pressure (log P) curves of clayey samples were depicted in the ranges of their consolidation parameters such as void ratio and primary compression index (Cc), coefficient of consolidation (CV). In addition, the coefficient compressibility (mv) and all of ...