Specific contributing area
WebThe specific contributing area (total contributing area divided by the contour length) is computed by distributing flow from a pixel among its entire lower elevation neighbour pixel7. The Fraction of Flow (F i) allocated to each lower neighbour 8 (i) is determined by using equation-1. An upslope contributing area WebApr 1, 2024 · Zhou and Liu (2002) quantified the errors of specific contributing area (SCA) obtained by flow direction algorithms on synthetic surfaces. It, however, can be noticed that errors in topographic variables are related not only to flow direction algorithms but also to other factors (Desmet and Govers, 1996, Marthews et al., 2015, Zhou et al., 2011
Specific contributing area
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WebThe contributing area represents the catchment area at any given point in space. The unit flow width in grid-based DEM is approximately the length of grid cell (Gallant and Wilson, 2000). This ... WebThe term "drainage area" is defined as the land area where precipitation falls off into creeks, streams, rivers, lakes, and reservoirs. It is a land feature that can be identified by tracing a line along the highest elevation between two areas on a map, often a ridge.
WebA grid of specific catchment area which is the contributing area per unit contour length using the multiple flow direction D-infinity approach. The contributing area of each grid cell is then taken as its own contribution plus the contribution from upslope neighbors that have some fraction draining to it according to the D-infinity flow model. WebIn order to properly evaluate different algorithms for computing the total contributing area (TCA) and specific contributing area (SCA) from DEMs, it is important to have mathematical test...
WebMar 8, 2024 · Specific Catchment Area (SCA) is defined as the contributing area per unit width of contour (i.e. the catchment area divided by the flow width). The contributin g area … http://www.isca.in/EARTH_SCI/Archive/v3/i7/3.ISCA-IRJES-2015-027.pdf
WebFeb 12, 2024 · The present study focused on the performance of LS-factor estimation methods involving specific contributing area (SCA) method and cumulative slope length method for slope length factor and USLE, RUSLE and USPED algorithms for slope steepness factor in a gently sloping terrain.
WebInput raster specific contributing area (SCA) file. slope Input raster slope file. output Output raster file. verbose_mode Sets verbose mode. If verbose mode is False, tools will not print … cmhistnWebThe units of upslope contributing area are m2/m or m (in fact A is As or specific contributing area, contributing area per unit contour width) So that's why you multiply by cell resolution … cafe chardonnay flWebThe output flow-accumulation can be: 1) cells (i.e. the number of inflowing grid cells), catchment area (i.e. the upslope area), or specific contributing area (i.e. the catchment area divided by the flow width). The default value is specific contributing area. cafe charing cross glasgowWebDec 29, 2024 · Specific selection guidance is provided under the Subsurface Drainage section. Class II geotextiles are generally used. Contributing drainage area – Permeable pavements sometimes capture runoff from adjacent areas, pavements, and roofs. Runoff from permeable areas is not recommended due to potential clogging of the permeable … cmh k2 rotor lodgeWebMar 11, 2024 · 1 Introduction Total contributing area (TCA) is geographically defined as the plain area potentially contributing runoff to a surface element (e.g., a segment of a contour line, a grid cell) (Erskine et al., 2006; Lindsay, 2003; Rieger, 1998 ). cmh kearneyWebThis study anatomized algorithm effects of specific contributing area (SCA) on soil wetness estimation, consequently landslide prediction, in SHALSTAB. A subtropical mountainous … cmh kidney centerWebContributing areas represent the source loca- tion of water discharging to wells at any instant in time. Thus, the contributing areas reflect the integrated effects of the movement of water through the system from the time and point at which the water entered the system to the time that it discharges to wells. cafe charisma wien