A Statistical Exploration of the Relationships of Soil Moisture Characteristics to the Physical Properties of Soils

@article{Cosby1984ASE,
  title={A Statistical Exploration of the Relationships of Soil Moisture Characteristics to the Physical Properties of Soils},
  author={Bernard Cosby and George M. Hornberger and Roger B. Clapp and Timothy R. Ginn},
  journal={Water Resources Research},
  year={1984},
  volume={20},
  pages={682-690}
}
Stochastic modeling of soil water fluxes in the absence of measured hydraulic parameters requires a knowledge of the expected distribution of the hydraulic parameters in different soil types. Predictive relationships describing the hydraulic parameter distributions must be developed based on the common descriptors of the physical properties of soils (e.g., texture, structure, particle size distribution). Covariation among the hydraulic parameters within these relationships must be identified… 

Pedotransfer functions for predicting the hydraulic properties of Indian soils

Most of the data pertaining to Indian soils are limited to the major soil separates, sand, silt, and clay. We examined the possibilities of using these parameters to describe the hydraulic

Impact of soil hydraulic parameter uncertainty on soil moisture modeling

For simulations in basins where soil information is limited to soil type maps, a methodology is presented to quantify the uncertainty of soil hydraulic parameters arising from within‐soil‐class

Identification of optimal soil hydraulic functions and parameters for predicting soil moisture

Abstract The accuracy of six combined methods formed by three commonly-used soil hydraulic functions and two methods to determine soil hydraulic parameters based on a soil hydraulic parameter look-up

Development of a soil hydraulic parameter estimator

Soil moisture is a key variable that controls the exchange of water and energy fluxes between the land surface and the atmosphere. However, the temporal evolution of soil moisture is neither easy to

Effects of soil morphology on hydraulic properties : I. Quantification of soil morphology

Utilization of existing soil survey databases for characterizing water flow and solute transport in field soils has practical value. However, the lack of a proper means for quantifying soil

Probabilistic Estimation of Soil-Water Characteristic Curves of Fine-grained Soils

The soil-water characteristic curve (SWCC), which describes the relationship between water content in soil and its matric suction, is important for studying the mechanical properties of unsaturated

Explaining soil moisture variability as a function of mean soil moisture: A stochastic unsaturated flow perspective

Understanding soil moisture variability and its relationship with water content at various scales is a key issue in hydrological research. In this paper we predict this relationship by stochastic

A mathematical model for variation in water-retention curves among sandy soils

Abstract Equations were developed to predict soil matric potential as a function of soil water content, texture and bulk density in sandy soils. The equations were based on the additivity hypothesis

A mathematical model for variation in water-retention curves among sandy soils

Equations were developed to predict soil matric potential as a function of soil water content, texture and bulk density in sandy soils. The equations were based on the additivity hypothesis - that
...

References

SHOWING 1-10 OF 15 REFERENCES

Empirical equations for some soil hydraulic properties

The soil moisture characteristic may be modeled as a power curve combined with a short parabolic section near saturation to represent gradual air entry. This two-part function—together with a power

Estimating Soil Water Retention from Soil Properties

Soil water retention characteristics are needed to describe the movement and storage of water in soils. Since conventional laboratory methods of obtaining these are expensive and time consuming, a

Estimating soil water retention characteristics from particle size distribution, organic matter percent, and bulk density

Regression models are presented for estimating soil-water-retention curves from particle-size distribution, percentage of organic matter, and bulk density. Models were developed from the measured

Variation within Texture Classes of Soil Water Parameters

ABSTRACT THE Brooks and Corey effective saturation-capillary pressure equation was fitted to 1,085 soil moisture characteristics for 10 soil texture classes ranging from sand to clay. The fitted

Estimation of soil-moisture characteristics from mechanical properties of soils.

ABSTRACTSoil-moisture characteristics can be established directly from the physical properties of soils and a single measurement of water potential, φ, in bars, at some moisture content, φ, on a

A SIMPLE METHOD FOR DETERMINING UNSATURATED CONDUCTIVITY FROM MOISTURE RETENTION DATA

The unsaturated hydraulic conductivity function for soil can be calculated directly from a moisture retention function and a single measurement of hydraulic conductivity at some water content. If the

Statistical analysis of the Brooks-Corey and the Green-Ampt parameters across soil textures

Infiltration is a major component of the hydrologic cycle for most watersheds. Therefore it is important to have a method that can provide infiltration estimates for soils within ungaged watersheds.

PORE VOLUME DISTRIBUTION AND CURVE OF WATER CONTENT VERSUS SUCTION OF POROUS BODY: 2. THE BOUNDARY WESTTING CURVE

The boundary wetting curve of water content versus suction is derived by using the effective pore volume distribution which is obtained by combination of probability theory with a pore model that was

Data-Dredging Procedures in Survey Analysis

This paper offers a classification of data-dredging procedures and some comments on their use, and fears that many survey reports are wearing the Emperor's clothes.

The advanced theory of statistics

A method for continuously effecting reactions in a liquid phase in the presence of a gas and of a finely divided solid catalyst in a bubble column-cascade reactor with little or no liquid