KFU. Card publication. Pseudo-hysteretic double-front hiatus-stage soil water parcels supplying a plant-root continuum: the Green-Ampt-Youngs model revisited

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PSEUDO-HYSTERETIC DOUBLE-FRONT HIATUS-STAGE SOIL WATER PARCELS SUPPLYING A PLANT-ROOT CONTINUUM: THE GREEN-AMPT-YOUNGS MODEL REVISITED

Form of presentation

Articles in international journals and collections

Year of publication

2013

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Authors, employees of KFU

Obnosov Yuriy Viktorovich, author

Bibliographic description in the original language

Kacimov, A. and Obnosov, U., 2013. Pseudo-hysteretic double-front hiatus-stage soil water parcels supplying a plant-root continuum: the Green-Ampt-Youngs model revisited.Hydrological Sciences Journal, 58 (1), 237-248. DOI:10.1080/02626667.2012.743028

Annotation

A tension-saturated water slug descends through a homogenous soil after a rainfall (irrigation) event and shrinks due to transpiration by a distributed root-sink and evaporation. An upper (drainage) and lower (imbibition) sharp fronts of the slug separate it from a superjacent and subjacent vadose zones, where water is immobile. In the slug, the hydraulic conductivity is constant according to the Green-Ampt model. The capillary pressures as well as effective porosities on the fronts are given (generally, different) constants that can be viewed as a kind of hysteresis. A volumetric sink models a mild (no desaturation of the slug) soil water withdrawal by the plant roots. The sink intensity varies with the depth from the soil surface and with time. Mathematically, the hydraulic head is immediately expressed by double integration of a governing 1-D flow equation. The pressure and kinematic conditions on the fronts result in a Cauchy problem for a system of two ODEs, which is solved

Keywords

words Infiltration, two-front Green-Ampt approximation, evapotranspiration, drainage-imbibition, root water uptake, ecohydrology

The name of the journal

HYDROLOG SCI J

URL

http://DOI:10.1080/02626667.2012.743028

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=45174&p_lang=2

Resource files

File name	Size (MB)	Format
HSJ,2012.pdf	0,21	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Obnosov Yuriy Viktorovich	ru_RU
dc.date.accessioned	2013-01-01T00:00:00Z	ru_RU
dc.date.available	2013-01-01T00:00:00Z	ru_RU
dc.date.issued	2013	ru_RU
dc.identifier.citation	Kacimov, A. and Obnosov, U., 2013. Pseudo-hysteretic double-front hiatus-stage soil water parcels supplying a plant-root continuum: the Green-Ampt-Youngs model revisited.Hydrological Sciences Journal, 58 (1), 237-248. DOI:10.1080/02626667.2012.743028	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=45174&p_lang=2	ru_RU
dc.description.abstract	HYDROLOG SCI J	ru_RU
dc.description.abstract	A tension-saturated water slug descends through a homogenous soil after a rainfall (irrigation) event and shrinks due to transpiration by a distributed root-sink and evaporation. An upper (drainage) and lower (imbibition) sharp fronts of the slug separate it from a superjacent and subjacent vadose zones, where water is immobile. In the slug, the hydraulic conductivity is constant according to the Green-Ampt model. The capillary pressures as well as effective porosities on the fronts are given (generally, different) constants that can be viewed as a kind of hysteresis. A volumetric sink models a mild (no desaturation of the slug) soil water withdrawal by the plant roots. The sink intensity varies with the depth from the soil surface and with time. Mathematically, the hydraulic head is immediately expressed by double integration of a governing 1-D flow equation. The pressure and kinematic conditions on the fronts result in a Cauchy problem for a system of two ODEs, which is solved	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	words Infiltration	ru_RU
dc.subject	two-front Green-Ampt approximation	ru_RU
dc.subject	evapotranspiration	ru_RU
dc.subject	drainage-imbibition	ru_RU
dc.subject	root water uptake	ru_RU
dc.subject	ecohydrology	ru_RU
dc.title	Pseudo-hysteretic double-front hiatus-stage soil water parcels supplying a plant-root continuum: the Green-Ampt-Youngs model revisited	ru_RU
dc.type	Articles in international journals and collections	ru_RU