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COMPARISON OF 1‐D AND 2‐D MODELING OF OVERLAND RUNOFF AND SEDIMENT TRANSPORT 1
Author(s) -
Hong Seonggu,
Mostaghimi Saied
Publication year - 1997
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1997.tb04128.x
Subject(s) - surface runoff , sediment transport , sediment , hydrology (agriculture) , environmental science , storm , runoff curve number , runoff model , soil science , geology , geotechnical engineering , geomorphology , ecology , oceanography , biology
One‐dimensional and two‐dimensional modeling approaches were compared for their abilities in predicting overland runoff and sediment transport. Both 1‐D and 2‐D models were developed to test the hypothesis that the 2‐D modeling approach could improve the model predictions over the 1‐P approach, based on the same mathematical representations of physical processes for runoff and sediment transport. The models developed in this study were applied to overland areas with cross slopes. A hypothetical case and an experimental study reported by Storm (1991) were used. Based on the simulation results from the selected hypothetical case and experimental study, the 2‐D model provided better representation of spatial distribution of flow depths and sediment concentrations than the 1‐D model. However, no significant differences in predictions of total runoff volume and sediment yield at the outlet area were found between the 1‐D and 2‐D models.