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Effect of depression storage capacity on overland‐flow generation for rough horizontal surfaces: water transfer distance and scaling
Author(s) -
Darboux F.,
Davy P.,
GascuelOdoux C.
Publication year - 2002
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.312
Subject(s) - surface runoff , scaling , percolation theory , percolation (cognitive psychology) , flow (mathematics) , water transfer , infiltration (hvac) , mechanics , water flow , geology , geotechnical engineering , hydrology (agriculture) , statistical physics , environmental science , geometry , mathematics , physics , meteorology , conductivity , ecology , water resource management , quantum mechanics , biology , neuroscience
Overland‐flow triggering on rough surfaces was investigated using an understanding‐oriented model. The model was based on conditioned‐walker technique and developed to simulate and analyse the evolution of puddle connection on numerically generated rough surfaces. The percolation theory gave a theoretical framework to formalize model outputs and to study overland‐flow scaling. Overland‐flow triggering appeared consistent with a percolation process. A scale‐change exponent was suggested. New insights based on the concept of transfer distance of water were emphasized. Transfer distance enabled us to analyse the water redistribution inside a field and helped to define rainfall efficiency when infiltration occurred. Copyright © 2002 John Wiley & Sons, Ltd.