Modeling soil water changes in a well‐structured, freely draining soil

Parkes, M. E.; O’Callaghan, J.R.

doi:10.1029/wr016i004p00755

Cited by 3 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…as measured by tensiometers. Soils of loam and clay loam texture took approximately I wk to stabilize at values of -4 to -5 kPa (Webster and Beckett 1972;Parkes and O'Callaghan 1980).…”

Section: Field Capacity Methodsmentioning

confidence: 99%

A Comparison of Two Methods for Determining the Evapotranspiration and Drainage Components of the Soil Water Balance

Maulé¹,

Chanasyk²

1987

Can. J. Soil. Sci.

View full text Add to dashboard Cite

Two simple techniques for separating soil moisture loss into drainage and evapotranspiration for cropped conditions were compared. The study was conducted during May through September 1983 at Ellerslie, Alberta. One technique, the field capacity method, utilized soil tension at − 4 kPa to demarcate the cessation of drainage; the other technique, the gradient method, utilized changes in soil moisture status relative to fallow conditions, to mark the onset of moisture extraction by roots. Both methods estimated similar amounts of drainage and evapotranspiration for the barley plots. Application and thus proper evaluation of these two methods were limited as more than 83% of the total drainage occurred during a 3-wk period in which only the Penman method for estimating evapotranspiration could be used. Key words: Water balance, drainage, evapotranspiration, field capacity method, gradient method

show abstract

“…as measured by tensiometers. Soils of loam and clay loam texture took approximately I wk to stabilize at values of -4 to -5 kPa (Webster and Beckett 1972;Parkes and O'Callaghan 1980).…”

Section: Field Capacity Methodsmentioning

confidence: 99%

A Comparison of Two Methods for Determining the Evapotranspiration and Drainage Components of the Soil Water Balance

Maulé¹,

Chanasyk²

1987

Can. J. Soil. Sci.

View full text Add to dashboard Cite

show abstract

Vertical transport and fate of low-water-solubility chemicals in unsaturated soils

Lindstrom

Piver

1985

Journal of Hydrology

View full text Add to dashboard Cite

Role of capillary water zone in groundwater recharge. Observation of rain infiltration by lysimeter.

Sakura

1983

Jpn. J. Limnol.

View full text Add to dashboard Cite

Observations were carried out using a couple of monolith lysimeters with a water table at 145 cm below the ground surface. Measurements of rainfall, outflow and soil water movement were made in order to clarify a mechanism of groundwater recharge caused by a heavy rainfall. The lysimeters were packed with sand 0.38 mm in median grain diameter and Kanto loam originating from volcanic ash soil whose heights of capillary rise are about 45 cm and larger than 125 cm, respectively. Groundwater recharge in the Kanto loam soil begins usually to increase and decrease earlier than in sand. The time required until the beginning of the increase in outflow after the peak of a rainfall intensity is an hour or two in Kanto loam soil, and more than two hours in sand. During the observation period of about one year, outflow from the Kanto loam soil stopped for 34 days and that from the sand for 3 days. These data indicate that groundwater recharge occurs as soon as the wetting front reaches the upper boundary of the capillary water zone, soil water in the suspended water zone is drained slowly and that in the capillary water zone quickly until a water equilibrium is established.

show abstract

Modeling soil water changes in a well‐structured, freely draining soil

Cited by 3 publications

References 20 publications

A Comparison of Two Methods for Determining the Evapotranspiration and Drainage Components of the Soil Water Balance

A Comparison of Two Methods for Determining the Evapotranspiration and Drainage Components of the Soil Water Balance

Vertical transport and fate of low-water-solubility chemicals in unsaturated soils

Role of capillary water zone in groundwater recharge. Observation of rain infiltration by lysimeter.

Contact Info

Product

Resources

About