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Neutron radiography of preferential flow in near-saturated soil sample

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00235551" target="_blank" >RIV/68407700:21110/15:00235551 - isvavai.cz</a>

  • Alternative codes found

    RIV/68407700:21720/15:00235551

  • Result on the web

    <a href="http://www.musis-workshop2015.uni-hannover.de/fileadmin/musis-workshop2015/MUSIS_2015_BOOKLET-8.pdf" target="_blank" >http://www.musis-workshop2015.uni-hannover.de/fileadmin/musis-workshop2015/MUSIS_2015_BOOKLET-8.pdf</a>

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Neutron radiography of preferential flow in near-saturated soil sample

  • Original language description

    A number of infiltration experiments has supplied the evidence that the validity of standard Richards theory of the flow in porous media has to be questioned in case of natural soils. Under near-saturated conditions the preferential flow and temporal instability of the saturated hydraulic conductivity has been detected. Water flow in an undisturbed sample of coarse sandy loam from Cambisol series containing naturally developed vertical macropore was investigated during recurrent ponding infiltration (RPI) experiments. Experiment consisted of two ponded infiltration runs, each followed by draining of the sample. Before the infiltration, the threedimensional neutron tomography (NT) image of the dry sample was acquired. The propagation of wetting front was documented by a sequence of neutron radiography (NR) images. Analysis of NR showed that water moved preferentially through the macropore at the approximate speed of 2 mm/sec, which was significantly faster than the 0.3 mm/sec wetting ad

  • Czech name

  • Czech description

Classification

  • Type

    O - Miscellaneous

  • CEP classification

    DA - Hydrology and limnology

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA14-03691S" target="_blank" >GA14-03691S: Isothermal and non-isothermal water flow and solute transport in near-saturated porous media</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2015

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů