Approximating soil moisture characteristics from limited data: Empirical evidence and tentative model

The soil moisture characteristic can be approximated from limited data as a composite of segments that are simple logarithmic relations. From available data, three segments are evident: (1) a capillary segment from saturation to pF 2.5, (2) an adsorbed film segment covering the stress range from about pF 2.5 to about 5.0, and (3) a tightly adsorbed segment that extends from pF 5.0 to 7.0.

[1]  I. S. Mcqueen,et al.  Soil-moisture and energy relationships associated with riparian vegetation near San Carlos, Arizona , 1972 .

[2]  H. D. Orchiston.  ADSORPTION OF WATER VAPOR: II. CLAYS AT 25°C , 1953 .

[3]  L. A. Richards,et al.  The Determination of Soil Moisture Energy Relations by Centrifugation 1 , 1939 .

[4]  A. Adamson.  Physical chemistry of surfaces , 1960 .

[5]  Moyer D. Thomas.  Aqueous Vapor Pressure Op Soils , 1921 .

[6]  J. D. Coleman,et al.  PORE PRESSURE AND SUCTION IN SOIL , 1961 .

[7]  D Croney,et al.  MOVEMENT AND DISTRIBUTION OF WATER IN SOIL IN RELATION TO HIGHWAY DESIGN AND PERFORMANCE , 1958 .

[8]  A. Banin,et al.  A correlative study of the chemical and physical properties of a group of natural soils of Israel. , 1970 .

[9]  G. P. Wind,et al.  Capillary conductivity data estimated by a simple method , 1966 .

[10]  E. Teller,et al.  ADSORPTION OF GASES IN MULTIMOLECULAR LAYERS , 1938 .

[11]  Daniel Hillel,et al.  Soil and water , 1971 .

[12]  T. Demirel.  Adsorption of water vapor by sodium and calcium montmorillonites , 1962 .

[13]  R. Miller,et al.  Plant Communities and Associated Soil and Water Factors of Shale‐Derived Soil in Northeastern Montana , 1970 .

[14]  Alan T. J. Hayward,et al.  Negative Pressure in Liquids: Can It Be Harnessed to Serve Man? , 1971 .

[15]  E. C. Childs.  An introduction to the physical basis of soil water phenomena , 1969 .

[16]  G. L. Roderick,et al.  WATER VAPOR-SODIUM MONTMORILLONITE INTERACTION , 1966 .

[17]  A. S. Rogowski.  Watershed Physics: Model of the Soil Moisture Characteristic , 1971 .

[18]  N. E. Edlefsen,et al.  Thermodynamics of soil moisture , 1943 .

[19]  P. F. Low.  Physical Chemistry of Clay-Water Interaction , 1961 .

[20]  M. B. Russell.  Soil moisture sorption curves for four Iowa soils. , 1940 .

[21]  R. H. Oppermann,et al.  Properties of ordinary water-substance: by N. Ernest Dorsey. 673 pages, illustrations, tables, 16 × 24 cms. New York, Reinhold Publishing Corporation, 1940.Price $15.00. , 1940 .

[22]  F. Veihmeyer.  Report of the committee on physics of soil‐moisture, 1936–37 (Interpretation of soil‐moisture problems by means of energy‐changes) , 1937 .

[23]  Moyer D. Thomas.  AQUEOUS VAPOR PRESSURE OF SOILS: II. STUDIES IN DRY SOILS , 1924 .

[24]  H. Temperley,et al.  The behaviour of water under hydrostatic tension: II , 1946 .

[25]  G. C. Topp,et al.  Hysteretic Moisture Characteristics and Hydraulic Conductivities for Glass-Bead Media1 , 1966 .

[26]  I. S. Mcqueen,et al.  CALIBRATION AND EVALUATION OF A WIDE‐RANGE GRAVIMETRIC METHOD FOR MEASURING MOISTURE STRESS , 1968 .

[27]  J. W. Biggar,et al.  The Dependence of Soil Water Uptake and Release Upon the Applied Pressure Increment1 , 1966 .

[28]  A. Poulovassilis,et al.  HYSTERESIS OF PORE WATER, AN APPLICATION OF THE CONCEPT OF INDEPENDENT DOMAINS , 1962 .

[29]  E. C. Childs.  THE USE OF SOIL MOISTURE CHARACTERISTICS IN SOIL STUDIES , 1940 .

[30]  G. C. Topp,et al.  Soil-Water Hysteresis: the Domain Theory Extended to Pore Interaction Conditions1 , 1971 .