DOI: 10.5194/hess-22-3639-2018
论文题名: Ecohydrological particle model based on representative domains
作者: Jackisch C. ; Zehe E.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2018
卷: 22, 期: 7 起始页码: 3639
结束页码: 3662
语种: 英语
Scopus关键词: Flow of water
; Soil moisture
; Stochastic systems
; Topology
; Dual domain model
; Non-uniform flows
; Physical model
; Richards Equation
; Soil water flows
; Structured soil
; Subsurface Flow
; Water particles
; Stochastic models
; advection-diffusion equation
; algorithm
; ecohydrology
; energy balance
; flow pattern
; infiltration
; model
; parameterization
; Richards equation
; simulation
; soil structure
; soil water
; subsurface flow
; water flow
英文摘要: Non-uniform infiltration and subsurface flow in structured soils is observed in most natural settings. It arises from imperfect lateral mixing of fast advective flow in structures and diffusive flow in the soil matrix and remains one of the most challenging topics with respect to match observation and modelling of water and solutes at the plot scale. This study extends the fundamental introduction of a space domain random walk of water particles as an alternative approach to the Richards equation for diffusive flow (Zehe and Jackisch 2016) to a stochastic-physical model framework simulating soil water flow in a representative, structured soil domain. The central objective of the proposed model is the simulation of non-uniform flow fingerprints in different ecohydrological settings and antecedent states by making maximum use of field observables for parameterisation. Avoiding non-observable parameters for macropore-matrix exchange, an energy-balance approach to govern film flow in representative flow paths is employed. We present the echoRD model (ecohydrological particle model based on representative domains) and a series of application test cases. The model proves to be a powerful alternative to existing dual-domain models, driven by experimental data and with self-controlled, dynamic macropore-matrix exchange from the topologically semi-explicitly defined structures. © 2018 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163265
Appears in Collections: 气候变化与战略
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作者单位: Jackisch, C., Karlsruhe Institute of Technology KIT, Institute of Water Resources and River Basin Management, Department of Hydrology, Kaiserstr. 12, Karlsruhe, 76131, Germany; Zehe, E., Karlsruhe Institute of Technology KIT, Institute of Water Resources and River Basin Management, Department of Hydrology, Kaiserstr. 12, Karlsruhe, 76131, Germany
Recommended Citation:
Jackisch C.,Zehe E.. Ecohydrological particle model based on representative domains[J]. Hydrology and Earth System Sciences,2018-01-01,22(7)