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Statements

Subject Item
n2:RIV%2F68407700%3A21110%2F10%3A00168153%21RIV11-GA0-21110___
rdf:type
n14:Vysledek skos:Concept
dcterms:description
Disk infiltrometers are established as standard devices for measuring soil surface hydraulic properties. This study explored the validity of a semiempirical approach that is used to obtain estimates of the near-saturated hydraulic conductivity from disk infiltrometer data. The approach was compared with two other estimation expressions. The analysis was based on three-dimensional numerical modeling of the infiltration process. The results of the validation procedure showed that the original expression performed best among the compared methods, but still failed for fine-textured soils and the selected Cambisols. The study showed that improved estimates, specifically for fine-textured soils and Cambisols, can be obtained by extending the original approach. This is achieved primarily (i) by using the modified van Genuchten parameterization of soil hydraulic functions, and (ii) by including a more representative set of soils in the objective function when optimizing the estimation formula. Disk infiltrometers are established as standard devices for measuring soil surface hydraulic properties. This study explored the validity of a semiempirical approach that is used to obtain estimates of the near-saturated hydraulic conductivity from disk infiltrometer data. The approach was compared with two other estimation expressions. The analysis was based on three-dimensional numerical modeling of the infiltration process. The results of the validation procedure showed that the original expression performed best among the compared methods, but still failed for fine-textured soils and the selected Cambisols. The study showed that improved estimates, specifically for fine-textured soils and Cambisols, can be obtained by extending the original approach. This is achieved primarily (i) by using the modified van Genuchten parameterization of soil hydraulic functions, and (ii) by including a more representative set of soils in the objective function when optimizing the estimation formula.
dcterms:title
Improving Hydraulic Conductivity Estimates from Minidisk Infiltrometer Measurements for Soils with Wide Pore-Size Distributions Improving Hydraulic Conductivity Estimates from Minidisk Infiltrometer Measurements for Soils with Wide Pore-Size Distributions
skos:prefLabel
Improving Hydraulic Conductivity Estimates from Minidisk Infiltrometer Measurements for Soils with Wide Pore-Size Distributions Improving Hydraulic Conductivity Estimates from Minidisk Infiltrometer Measurements for Soils with Wide Pore-Size Distributions
skos:notation
RIV/68407700:21110/10:00168153!RIV11-GA0-21110___
n3:aktivita
n15:P n15:Z
n3:aktivity
P(GA205/08/1174), Z(MSM6840770002)
n3:cisloPeriodika
3
n3:dodaniDat
n6:2011
n3:domaciTvurceVysledku
n13:1272888 n13:2289016 n13:5672775
n3:druhVysledku
n17:J
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n11:predkladatel
n3:idSjednocenehoVysledku
263212
n3:idVysledku
RIV/68407700:21110/10:00168153
n3:jazykVysledku
n7:eng
n3:klicovaSlova
minidisk infiltrometer; hydraulic conductivity; Cambisols
n3:klicoveSlovo
n4:Cambisols n4:hydraulic%20conductivity n4:minidisk%20infiltrometer
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[4E677D2D0700]
n3:nazevZdroje
Soil Science Society of America Journal
n3:obor
n18:DA
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n9:GA205%2F08%2F1174
n3:rokUplatneniVysledku
n6:2010
n3:svazekPeriodika
74
n3:tvurceVysledku
Vogel, Tomáš Dušek, Jaromír Dohnal, Michal
n3:wos
000277500600011
n3:zamer
n16:MSM6840770002
s:issn
0361-5995
s:numberOfPages
8
n10:organizacniJednotka
21110