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Vflo
rightV''flo'' is a commercially available, physics-based distributed hydrologic model generated by (Vieux & Associates, Inc. ) V''flo'' uses radar rainfall data for hydrologic input to simulate distributed runoff.〔Vieux, B.E., 2004, Distributed Hydrologic Modeling Using GIS, Kluwer Academic Publishers, Dordrecht, The Netherlands, 289 pp.〕〔Bedient, P.B., W.C. Huber, and B.E. Vieux, 2008, Hydrology and Floodplain Analysis, Fourth Edition, Prentice Hall, Upper Saddle River, NJ, 795 pp.〕 V''flo'' employs GIS maps for parameterization via a desktop interface.〔Vieux, B.E., Z. Cui, and A. Gaur, 2004, Evaluation of a physics-based distributed hydrologic model for flood forecasting. ''J. Hydrol.'', 298(1-4): 155-177. DMIP special issue.〕 The model is suited for distributed hydrologic forecasting in post-analysis and in continuous operations. V''flo'' output is in the form of hydrographs at selected drainage network grids, as well as distributed runoff maps covering the watershed. Model applications include civil infrastructure operations and maintenance, stormwater prediction and emergency management, continuous and short-term surface water runoff, recharge estimation, soil moisture monitoring, land use planning, water quality monitoring, and water resources management.
== History ==
V''flo'' considers the spatial character of the parameters and precipitation controlling hydrologic processes, and thus improves upon lumped representations previously used in hydrologic modeling. Historical practice has been to use lumped representations because of computational limitations or because sufficient data was not available to populate a distributed model database.〔Desconnets, J.-C., B.E. Vieux, B. Cappelaere, and F. Delclaux (1996), “A GIS for hydrologic modeling in the semi-arid, HAPEX-Sahel experiment area of Niger Africa.” ''Trans. in GIS'', 1(2): 82-94.〕 Advances in computational speed; development of high-resolution precipitation data from radar and satellites; and availability of worldwide digital data sets and GIS technology makes distributed, physics-based modeling possible.〔ASCE, 1999, ''GIS Modules and Distributed Models of the Watershed'', Report, ASCE Task Committee, GIS Modules and Distributed Models of the Watershed, P.A. DeBarry, R.G. Quimpo, eds., American Society of Civil Engineers, Reston, VA., p. 120.〕 V''flo'' is designed to take advantage of the spatial variability of high resolution radar rainfall input, GIS datasets, and hydraulic channel characteristics. Because it is physics-based, it produces hydrographs based on conservation equations and the hydraulics of the drainage network, and can be employed in locations where there are no rain gauges or previous modeling studies. In addition, V''flo''’s network approach makes models scalable from upland watersheds to river basins using the same drainage network.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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