Microflowmeter–tension disc infiltrometer: Part II – Hydraulic properties estimation from transient infiltration rate analysis
نویسندگان
چکیده
منابع مشابه
Determining Soil Hydraulic Properties from Tension Infiltrometer Measurements: Fuzzy Regression
numerical instability can be problems. Therefore, the nonlinear least-squares regression method introduced Tension infiltrometer measurements have been used to measure by Logsdon and Jaynes (1993) has been widely used, steady-state infiltration rates at applied tensions. The measurements owing to its simplicity. They estimated saturated hycan be used to determined soil hydraulic properties thro...
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Inverse optimization of parameters offers an economical means to infer soil hydraulic properties from in situ measurements of infiltration. We evaluated optimization strategies to inversely estimate soil hydraulic parameters using field measured tension disc infiltrometer data. We estimated the parameters n, , and Ks of the van Genuchten-Mualem (VGM) model, and a piecewise representation of con...
متن کاملEstimation of Soil Hydraulic Properties Curve through Beerkan Infiltration Experiment Algorithms
Nowadays, the Beerkan computational algorithms (BESTslope and BESTsteday) are known as the suitable indirect methods for estimating soil saturated hydraulic conductivity (Ks) and sorptivity (S), as well as the scale parameter (hg) in van Genuchten soil water retention equation through the data collected in the Beerkan infiltration experiment and other required data. The purpose of this study wa...
متن کاملMacroporosity and infiltration in blanket peat: the implications of tension disc infiltrometer measurements
Little is known about the processes of infiltration and water movement in the upper layers of blanket peat. A tension infiltrometer was used to measure hydraulic conductivity in a blanket peat in the North Pennines, England. Measurements were taken from the surface down to 20 cm in depth for peat under four different vegetation covers. It was found that macropore flow is a significant pathway f...
متن کاملevaluation of ankeny and weir equation estimating hydraulic parameters using disc infiltrometer
abstract disc infiltrometer is one of those devices that used in recent years in measurement of hydraulic conductivity of entire soil. in order to analyze the data taken by disc infiltrometer a variety of methods based on wooding’s base analyze have been introduced. the objective of this study was to compare the performances of ankeny and weir methods for predicting soil hydraulic properties us...
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ژورنال
عنوان ژورنال: Journal of Hydrology
سال: 2012
ISSN: 0022-1694
DOI: 10.1016/j.jhydrol.2012.04.047