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001     1038333
005     20250203103328.0
037 _ _ |a FZJ-2025-01331
041 _ _ |a English
100 1 _ |a Miaari, Sami
|0 P:(DE-Juel1)196843
|b 0
|u fzj
111 2 _ |a American Geophysical Union 2024
|g AGU24
|c Washington D.C.
|d 2024-12-09 - 2024-12-13
|w USA
245 _ _ |a Temporal scaling laws for wetting and drying in variably saturated soils
260 _ _ |c 2024
336 7 _ |a Conference Paper
|0 33
|2 EndNote
336 7 _ |a INPROCEEDINGS
|2 BibTeX
336 7 _ |a conferenceObject
|2 DRIVER
336 7 _ |a CONFERENCE_POSTER
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336 7 _ |a Poster
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|s 1738222860_10001
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|x After Call
502 _ _ |c Universität Bonn
520 _ _ |a Natural systems often exhibit properties and temporal scalings of power law type due to their internal dynamics. These scaling laws facilitate a more generalized understanding and description of complex phenomena, offering valuable insights into the fundamental principles governing information transfer in natural systems. This study examines the process of constant vertical infiltration in a homogeneous subsurface with initially hydrostatic conditions and a free water table as a lower boundary condition. The research aims to enhance the understanding of time scales associated with variably saturated subsurface flow due to constant infiltration. In 1969, Philip introduced the characteristic time at which gravitational forces dominate over capillary forces in case of ponded infiltration. This time also helps determine the quasi-steady state of ponded infiltration. We introduce a scaling law that provides insights into quasi-steady state time scales for infiltration and drainage, beyond just ponded infiltration relaxing many of the assumptions in previous studies. Simulations were conducted using the variably saturated groundwater flow model ParFlow. In the simulations, the infiltration rate, water table depths, hydraulic conductivity, and respective soil texture parameters were perturbed systematically. Through dimensional analysis, new scaling relationships of infiltration and drainage time scales have been obtained. One relationship is based on the velocity of the pressure head response required to reach a quasi-steady state, while another is based on dimensionless ratios of the considered variables. The analyses allow us to estimate the order of magnitude of response times toward quasi-steady state conditions depending on the system's hydraulic characteristics and boundary conditions. Future research should expand the obtained results by considering initial conditions with varying moisture levels.
536 _ _ |a 2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)
|0 G:(DE-HGF)POF4-2173
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536 _ _ |a STARS4Water - Supporting STakeholders for Adaptive, Resilient and Sustainable Water Management (101059372)
|0 G:(EU-Grant)101059372
|c 101059372
|f HORIZON-CL6-2021-CLIMATE-01
|x 1
700 1 _ |a Kollet, Stefan
|0 P:(DE-Juel1)151405
|b 1
|u fzj
909 C O |o oai:juser.fz-juelich.de:1038333
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910 1 _ |a Forschungszentrum Jülich
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910 1 _ |a Forschungszentrum Jülich
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913 1 _ |a DE-HGF
|b Forschungsbereich Erde und Umwelt
|l Erde im Wandel – Unsere Zukunft nachhaltig gestalten
|1 G:(DE-HGF)POF4-210
|0 G:(DE-HGF)POF4-217
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914 1 _ |y 2024
920 1 _ |0 I:(DE-Juel1)IBG-3-20101118
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980 _ _ |a poster
980 _ _ |a VDB
980 _ _ |a I:(DE-Juel1)IBG-3-20101118
980 _ _ |a UNRESTRICTED

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