NDLI: Study on modeling infiltration responses of different soils under ponding conditions

Content Provider	IEEE Xplore Digital Library
Author	Dejun Yang Zhengfu Bian
Copyright Year	2011
Description	Author affiliation: School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, China (Dejun Yang; Zhengfu Bian)
Abstract	Based on the infiltration model under ponding condition introduced by Parlange, infiltration responses of different soils under ponding conditions were numerically studied for 10 hours in this paper. Results modeled by Green-Ampt model were used for comparison under rainfall rate 20cm/h. It has been found that the cumulative infiltration shows positive relativity with the saturated hydraulic conductivity. Actual infiltration rate curve was divided into 2 period, falling rate-state infiltrability phase and steady-state infiltrability phase. As for one type of soil, the cumulative infiltration varies widely under 4 designed cases, which is induced by the difference of ponding depth. Comparison was also made with the results modeled by the equation I=Kst. It has been also found that results of loamy sand and sandy loam modeled by I=Kst were close to those modeled by Parlange model under ponding conditions, except case 1. If ponding depth is less smaller (such as less than 3cm), results modeled by Green-Ampt model under heavy rainfall condition are close to those modeled under ponding conditions by Parlange model. Wetting front varies widely as well, from which it can be concluded infiltration capacity of different soils under ponding conditions as following: loamy sand>sandy loam>loam>clay.
Starting Page	4483
Ending Page	4486
File Size	342363
Page Count	4
File Format	PDF
ISBN	9781424491728
e-ISBN	9781424491711
DOI	10.1109/RSETE.2011.5965241
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Green-Ampt model Infiltration response Green products Wetting front Ponding condition Soil Numerical models Parlange model Mathematical model Informatics Water resources Equations
Content Type	Text
Resource Type	Article

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