| 翻訳と辞書 |
GSSHA
GSSHA (Gridded Surface/Subsurface Hydrologic Analysis)〔Downer, C.W., and F.L. Ogden, 2004, GSSHA: A model for simulating diverse streamflow generating processes, ''J. Hydrol. Engrg.'', 9(3):161-174.〕 is a two-dimensional, physically based watershed model developed by the Engineer Research and Development Center of the United States Army Corps of Engineers. It simulates surface water and groundwater hydrology, erosion and sediment transport. The GSSHA model is used for hydraulic engineering and research, and is on the Federal Emergency Management Agency (FEMA) list of hydrologic models accepted for use in the national flood insurance program for flood hydrograph estimation. Input is best prepared by the Watershed Modeling System interface,〔(WMS )〕 which effectively links the model with geographic information systems (GIS).
GSSHA uses a square-grid, constant grid-size representation of watershed topography and characteristics, similar to a digital elevation model representation. Relevant model parameters are assigned to the model grids using index maps. Index maps are often derived from soils, landuse/land cover, vegetation, or other physiographic maps.
==History==
The GSSHA model〔Downer, C.W., and F.L. Ogden, 2004, GSSHA: A model for simulating diverse streamflow generating processes, ''J. Hydrol. Engrg.'', 9(3):161-174.〕〔Downer, C.W., F.L. Ogden, J. M. Niedzialek, and S. Liu, 2006, Gridded Surface/Subsurface Hydrologic Analysis (GSSHA) Model: A Model for Simulating Diverse Streamflow Producing Processes, p. 131-159, in Watershed Models, V.P. Singh, and D. Frevert, eds., Taylor and Francis Group, CRC Press, 637 pp.〕〔Downer, C.W., and F.L. Ogden, 2006, Gridded Surface Subsurface Hydrologic Analysis (GSSHA) User's Manual, Version 1.43 for Watershed Modeling System 6.1, System Wide Water Resources Program, Coastal and Hydraulics Laboratory, U.S. Army Corps of Engineers, Engineer Research and Development Center, ERDC/CHL SR-06-1, 207 pp.〕 was derived from the CASC2D hydrologic model.〔Julien, PY; Saghafian, B. 1991. CASC2D Users Manual - A Two Dimensional Watershed Rainfall-Runoff Model. Civil Engr. Report, CER90-91PYJ-BS-12. Colorado State University, Fort Collins. 66 pp.〕〔Ogden, F.L., and P.Y. Julien, 2002, Distributed model CASC2D, in Mathematical Models of Small Watershed Hydrology, Vol 2, V.P. Singh, R. Frevert, and D. Meyers eds., Water Resources Publications, ISBN 1-887201-35-1, 972 pp.〕 GSSHA represents a significant improvement on CASC2D in terms of capabilities, options, and numerical procedures. GSSHA includes dynamic time-stepping depending on stability criteria, different time steps for different numerical processes, and the ability to run on multi-processor computers. Processes included in GSSHA include surface and ground water flow, channel hydraulics, evapotranspiration, erosion and sedimentation, storm drainage networks, tile drains, a variety of hydraulic structures, and contaminant/nutrient fate and transport.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「GSSHA」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|