Showing papers in "Journal of Hydrology in 1981"

TL;DR: The concentrations of dissolved gaseous nitrogen and argon in groundwater from a number of areas in South Africa are in many cases higher than the concentrations to be expected for atmospheric equilibrium.

TL;DR: In this paper, analytical solutions for the movement of a chemical in a porous medium as influenced by linear equilibrium adsorption, zero-order production, and first-order decay are presented.

TL;DR: In this article, the authors established an analytical relationship between the aquifer parameters for porous media and the so-called Dar-Zarrouk parameters so that the former can best be estimated from the surface resistivity measurements.

TL;DR: In this paper, the authors derived criteria for the existence of saturated areas on draining hillslopes in natural catchments in terms of soil transmissivity, the hillslope gradient and its wetness state, characterised by the baseflow discharge from the catchment.

TL;DR: In this paper, a diagenetic model was proposed to explain chemical variation in formation water collected from a dip section through Lower Cretaceous rocks of south-central Texas. Chemical variation can be explained by an interactive water-rock diagenetics model, which can be considered, to a first approximation, as part of a complex aquifer contained by Paleozoic basement.

TL;DR: In this article, the authors investigated the nitrate, oxygen, nitrogen and argon concentrations and 15 N 14 N ratios in artesian groundwater with radiocarbon ages ranging up to 27,000 yr.

TL;DR: In this paper, hydrometeorological data for two watersheds in western Oregon indicate snowmelt during rainfall has been a dominant hydrologic process which is responsible for erosion within headwater areas and for downstream flooding.

TL;DR: In this article, the authors used the Darcy equation for a saturated non-fractured porous medium to measure hydraulic conductivity, porosity and hydraulic gradient, and concluded that the pore water in these deposits is a mixture of late Pleistocene and modern waters.

TL;DR: In this paper, a more general use of the filter-paper method for measuring soil-water potential over a very wide range of values is advocated, both for in situ and laboratory situations.

TL;DR: In this article, an analytical solution for solute transport in a planar fracture coupled with diffusion into the adjacent matrix is presented for the transient concentration distribution along the fracture as well as into the matrix.

TL;DR: The main governing process is the formation of crust with an hydraulic conductivity several orders of magnitude lower than that of the soil profile, attributed to the organization of a very thin layer on the soil surface as discussed by the authors.

TL;DR: Cluster analysis of data describing the flood hydrology of selected New Zealand catchments is used in an attempt to identify regions in which catchments have similar hydrologic regime.

TL;DR: In this paper, the role of linear or non-linear adsorption, mass transfer kinetics, chemical reactions and ion exchange in column tracer experiments is qualitatively dealt with.

TL;DR: In this paper, it was shown that if a stream emerges into more open rural valleys at lower slopes and are accompanied by extensive floodplains formed of fine cohesive sediment, there is a dramatic reduction in channel size, accompanied by a downstream increase in flood frequency in their lower reaches.

TL;DR: The chemistry of precipitation and river water was studied for one year in Glendye, a 41 km 2 moorland catchment in northeast Scotland as mentioned in this paper, and the results supported the grouping of variables produced by factor analysis.

TL;DR: In this article, isotope hydrology of groundwaters in the Pampa del Tamarugal region of Chile has been discussed, where groundwater resources are mined for the town of Iquique and for industrial and agricultural purposes.

TL;DR: In this paper, three models of the tipping-bucket raingage were calibrated in the laboratory by adjusting the volume required to tip the bucket and by correcting the output readings.

TL;DR: In this paper, Gash's analytical model with a 2-yr. sequence of storm-rainfall and daily rainfall amounts were compared with observed interception losses, and the estimated interception losses averaged 9% greater than observed losses.

TL;DR: In this article, a field method is described for measurement of short-circuiting, which is defined as vertical flow of free water along the walls of continuous macropores in unsaturated soil.

TL;DR: In many parts of the Permian Basin of the southwestern U.S.A. as mentioned in this paper, salt dissolution produces a self-perpetuating cycle: dissolution causes cavern development, followed by collapse and subsidence of overlying rock; then the resulting disrupted rock has a greater vertical permeability that allows increased water percolation and additional salt dissolution.

TL;DR: In this article, a general analytical solution to the kinematic flow approximation for an excess rainfall which is any arbitrary function of time is presented, which generalizes an earlier solution which applies when the excess rainfall is constant for a finite time interval.

TL;DR: In this paper, a computer model was used to simulate soil moisture regimes of a swelling clay soil, where dessiccation is associated with the formation of both vertical and horizontal cracks in the soil.

TL;DR: In this paper, a dimensionless stability index, defined in terms of the above parameters, is deduced and shown to be remarkably constant in value at stable reach sections on particular gravel-bed rivers, and for rivers within a single watershed.

TL;DR: In this paper, an estimation procedure capable of correcting the effect of heteroscedastic (changing variance) streamflow errors is presented, where the noninformative data case is assumed and for that a Bayesian formulation is used to automatically estimate the proper weights.

TL;DR: In this article, the authors investigated the spatial and temporal variations of infiltration within the geographical framework of a small stream catchment and attempted to isolate the dominant influencing factors using regression analytical techniques.

TL;DR: Leaching experiments on fly and bottom ash for Ca, Mg, Na, K, Fe, Mn, Zn, Cu, Mn and Cd indicated a potential for contamination of ground and surface water supplies as mentioned in this paper.

TL;DR: In this article, a discharge diagram for streams is given a physical interpretation, permitting the assignment of a relative shear stress value to each stream based on simple hydraulic reasoning, and a sample of 359 streams is used, ranging in mean annual discharge from 900,000 to 0.05 ft.

TL;DR: Manheim et al. as mentioned in this paper investigated formation-fluid salinities in a transect from western Georgia to the edge of the Blake Plateau off the coast of Georgia.

TL;DR: In this paper, moment ratio diagrams of peak annual discharges of 172 Australian streams were used for estimation of extreme flood discharges, and it was shown that the log Pearson Type III distribution was appropriate for estimation.

TL;DR: Wallick et al. as mentioned in this paper studied the chemical evolution of groundwater in a small drainage basin of glacial origin (10,250 yr. B.P., based on radiocarbon age dating of gyttja from a closed saline lake in the basin) to understand the generation of salts in surface-mined areas on the interior plains of Alberta.