Showing papers in "Journal of Hydrology in 1970"

TL;DR: In this article, the principles governing the application of the conceptual model technique to river flow forecasting are discussed and the necessity for a systematic approach to the development and testing of the model is explained and some preliminary ideas suggested.

TL;DR: In this paper, methods of modeling the runoff process on the Ray catchment are described, which depend on soil moisture accounting and simple descriptions of the generation of runoff and of routing.

TL;DR: Aquifers of the peninsulas of Florida and northern Yucatan are Tertiary marine carbonate formations showing many lithologic and faunal similarities.

TL;DR: The type of sampling device, whether a screw or coring auger, is shown to influence soil moisture determinations as discussed by the authors, and after storage of samples in two different containers for periods up to 7 days, the moisture losses were shown to be negligible.

TL;DR: In this paper, the influence of various environmental factors on soil moisture variability in the 0-8 cm horizon is examined and correlations established with the amounts of rainfall and insolation in the week preceding sample collection, and the degree of moisture saturation at the time of sampling.

TL;DR: In this article, an attempt to model the runoff process on the Brosna catchment is described, and different models are compared and it is found possible to account for about 80 per cent of the initial variance of the discharge by very simple models.

TL;DR: In this article, a conceptual model for the description, explanation, prediction, and control of hydrogeologic conditions is composed of two systems of physical and chemical parameters: the Hydrogeologic Environment, and the Groundwater Regime.

TL;DR: In this article, the authors performed experiments with cyclic varying discharges on a large bed of sand at Wallingford and found that bank-full flow is the condition which generates the characteristic meander length.

TL;DR: In this article, a description of two soil-water sampling devices and success achieved in obtaining soil water on a routine basis at depths of 1 to 36 feet below land surface are described.

TL;DR: In this article, a small catchment has been calibrated for a period of 17 months prior to building activity by deriving multiple regression equations relating peak flow, runoff amount and runoff percentage to precipitation characteristics at different times of the year, by evaluating unit hydrographs, by establishing suspended sediment rating curves, and by using two adjacent catchments as controls.

TL;DR: In this paper, a salt tracing procedure has been examined for small streams and the velocity through the channel reach using the salt tracing method was found to be a better representation of the average stream velocity than that computed by the continuity equation at three channel cross sections.

TL;DR: The Youngs, Gardner, Ligon, and numerical analysis techniques for calculating the amounts of one-dimensional, vertical drainage from soil are discussed and compared with each other and with observed data, where possible as discussed by the authors.

TL;DR: In the early 1970s, central Australia received some of its heaviest rainfall on record, with total gaugings of 120-350 mm, with some stations receiving overnight falls of over 150 mm.

TL;DR: In this article, the amount of tritium in the rainwater, the groundwater, and the outflow from a particular drainage basin is measured from radiometric data. But, the trite is not adsorbed by the soil.

TL;DR: In this article, tritium was used to estimate the water balance of Lake Chala, Kenya, which has no surface inflow or outflow, and the results indicated that none of the springs derives a major component of its discharge from the lake.

TL;DR: In this article, the authors give a quick test with high power where type I is the null hypothesis and type II is the alternative; it is a result based on a study to be published elsewhere dealing with the reduction of power as a consequence of using numerically simplified tests.

TL;DR: In this article, the authors examined the space variations of daily precipitation in terms of the field of inter-station correlations over the Sleepers River Watershed in northern Vermont, and derived a correlation field function which was then used to determine raingage density and configuration required for specified accuracy of watershed precipitation estimates.

TL;DR: In this article, a number of methods of fitting the double-exponential distribution to a sample of data are compared, expressed in a common notation and compared in bias and efficiency.

TL;DR: In this paper, the authors proposed to combine distance-drawdown analysis with constant storage coefficient and time drawdown analysis, with delayed yield from storage, to find the transmissibility and storage coefficients.

TL;DR: In this article, the authors measured two stands of Pinus radiata in southern Australia at a location of 141°E, 38°S and found that the evaporation from forest during winter and spring was up to 2.2 times that from grassland.

TL;DR: In this article, the variability of soil moisture in the 0-8 cm horizon has been studied over a range of soil types and three practical methods of reducing variability are examined, which are shown to vary greatly from area to area, depending upon the stoniness and nature of the soil, and the type and extent of the vegetation cover.

TL;DR: In this paper, it was shown that the nonlinearity associated with the catchment areas is mainly the result of that to be found in their channel systems, and that the absolute magnitude of lag time is highly correlated with catchment area and slope.

TL;DR: In this paper, a laboratory watershed permitted carefully controlled experiments on important factors that affect stream hydrographs, such as rainfall intensity, rainfall duration, storm movement, simulated permeability, and antecedent moisture conditions.

TL;DR: The water balance of grassland on the Gambier Plain at a site (140°50′E, 37° 50′S) about 24 miles from the Southern Ocean, was investigated using lysimeters and neutron moisture meters as mentioned in this paper.

TL;DR: In this paper, the authors examined the relationship between local relief, used as a measure of the ruggedness of the terrain, and the required network density for given accuracies of estimates for mean catchment rainfall.

TL;DR: In this article, the response to characteristic piezometric height inputs of aquifers of finite dimensions is examined via the linear differential equation of the ground water flow, which is used in input-output analysis and synthesis for prediction of piezometric heights and estimation of the parameters of aquifer as well as in setting up and testing ground water analogue models.

TL;DR: In this paper, the authors define an n -year flood as one for which the return period, i.e., the expectation of the interval T between floods, is n = 1/p years, and consider the statistical variability of T in the two cases where the statistical properties of the river flows in different years are mutually independent, and serially correlated by means of a Markov Chain.

TL;DR: In this paper, the authors studied the water balance on a hectare of gravelly wash in northern Death Valley and found that plants can obtain moisture from free soil water and the condensation of soil water vapor in March.

TL;DR: In this paper, an improved method is presented for evaluating the Thiessen weights or coefficients by a digital computer, which is based on covering the area of the watershed with uniform, equally spaced test points on a rectangular grid and assigning each such point to the nearest rain-gaging station.