Quantitative description of depression storage using a digital surface model

Ullah, Wasi; Dickinson, W. T.

doi:10.1016/0022-1694(79)90006-4

Cited by 46 publications

(40 citation statements)

References 5 publications

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“…These are reasonably standard tillage operations employed for corn and some other crops in Southern Ontario. These runoff plots have been extensively studied by other researchers for various purposes over the years, including the characterization of surface depressions (Ullah, 1974;Rudra et al, 1985Rudra et al, , 1989.…”

Section: The Study Areamentioning

confidence: 99%

“…The technique used to quantify the depressional storages from a set of elevation data on square grids is similar to that originally proposed by Ullah and Dickinson (1979a) with one modification. In their studies, Ullah and Dickinson (1979a) used a fourpoint adjacent neighbor scheme to delineate depressions, while this study uses an eight-point adjacent neighbor scheme; four orthogonal and four diagonal ones, as proposed by Huang and Bradford (1990).…”

Section: Computational Proceduresmentioning

confidence: 99%

“…However, their analysis provided no information on geometric features of individual depressions. Ullah and Dickinson (1979a) used a stereo camera and digitizing system similar to that used to obtain digital elevation data from remotely sensed platforms and showed a general trend of decreasing surface storage with increasing slope. They did not include a roughness parameter in their quantification of surface depressional storage.…”

Section: Introductionmentioning

confidence: 99%

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On depressional storages: The effect of DEM spatial resolution

Abedini

Dickinson

Rudra

2006

Journal of Hydrology

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Section: The Study Areamentioning

confidence: 99%

Section: Computational Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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On depressional storages: The effect of DEM spatial resolution

Abedini

Dickinson

Rudra

2006

Journal of Hydrology

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“…Therefore, the DEM-derived SRI should be seen not as a replacement of traditional pin-height measurements, but rather as a second indicator of surface roughness that allows additional measurements. Depression water storage can be measured from a single DEM and soil erosion, sediment transport, or other net change in surface elevation, can be measured by comparison of two temporally-separated DEMs (Ullah and Dickinson 1979;Warner and Kvaerner 1998;Chandler et al 2002;Mathews 2008).…”

Section: Discussionmentioning

confidence: 99%

“…We postulated that if grazing resulted in degradative hummocks as claimed in the above cited literature, then hummocking would be detectable in surface microtopography using (a) erosion-bridge measurements expressed as a surface roughness index (SRI) (Jester andKlik 2005 citing Luk 1983) and (b) using photogrammetric methods. Ullah and Dickinson (1979) used photogrammetry to create digital elevation models (DEMs) from which they measured soil-depression water storage. Smart et al (2002) demonstrated that low level photogrammetry is a practical tool for creating microtopographic DEMs to measure river bed surface roughness and Taconet and Ciarlati (Taconet and Ciarletti 2007) utilized a similar procedure to measure soil roughness in furrowed agricultural fields.…”

Section: Introductionmentioning

confidence: 99%

Fenceline contrasts: grazing increases wetland surface roughness

Booth

Cox

Likins

2014

Wetlands Ecol Manage

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A warming earth has lost substantial mountain-stored frozen fresh water, thus generating a pressing need for greater liquid-water storage within upperelevation riparian systems. Liquid-water storage can be enhanced by avoiding microtopographic channels that facilitate land drainage and rapid runoff. A number of authors have attributed certain forms of wetland hummocks and inter-hummock channels to grazing livestock but there is little evidence in the scientific literature for a cause and effect mechanism. We used comparisons at six fencelines on four meadow and wetland complexes to test the null hypothesis that grazing management makes no difference in hummocks and inter-hummock channels measured as surface roughness. Surface roughness was measured both photogrammetrically (photo) and with an erosion bridge (EB), and the measurements expressed as surface roughness indices (SRIs). Wetland surface roughness inside fenced areas was 44 (EB) and 41 (photo). Wetland surface roughness outside fenced areas was more than 50 % higher (p \ 0.0001), measuring 76 (EB, n = 6) and 62 (photo, n = 4). The site with the longest period of conservation management (50? years) had the lowest inside EB SRI at 27. The two independent measurement methods, EB and photo, yielded similar, correlated results (R = 0.71, n = 8). Historical aerial photography provides supporting evidence for our findings. We reject the null hypothesis and while we suspect macrotopography, hydrology, soil type, and climate are factors in hummock formation, our evidence supports the thesis that hummocks formed surface-down by inter-hummock channels result primarily from grazing by domestic livestock.

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The production of digital elevation models for experimental model landscapes

Hancock

Willgoose

2001

Earth Surf Processes Landf

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Automated digital photogrammetry was used to produce digital elevation models of experimental model landscapes under controlled laboratory conditions as part of a series of rainfall erosion experiments looking at the evolution of landforms in response to erosion. The method allowed the elevations of the experimental landscapes to be studied in great detail on a regular grid digital terrain map with relatively very little effort. Digital photogrammetry produced elevation data at a resolution of 6 mm with a standard deviation of 2Á0 mm over an experimental catchment relief of approximately 200 mm; this resolution is considerably better than that achievable by conventional manual photogrammetry. The density of grid points was sufficiently high that small-scale details such as knickpoints developing in channels were represented. The method can facilitate the study of both experimental and natural landscapes in great detail.

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Quantitative description of depression storage using a digital surface model

Cited by 46 publications

References 5 publications

On depressional storages: The effect of DEM spatial resolution

On depressional storages: The effect of DEM spatial resolution

Fenceline contrasts: grazing increases wetland surface roughness

The production of digital elevation models for experimental model landscapes

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