Hillslope characteristics and particle size composition of surficial armoring on a semiarid watershed in the southwestern United States

Canfield, H. Evan; Lopes, Vicente L.; Goodrich, David C.

doi:10.1016/s0341-8162(00)00154-5

Cited by 21 publications

(14 citation statements)

References 20 publications

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“…So a trend was observed between the rock fragment cover and the slope aspect, with a higher rock fragment cover on the slopes facing the dominant wind direction. Canfield (2001) reached the same conclusion, with a higher rock fragment cover on the eastern exposed slopes in an area with a dominant east wind.…”

Section: Rock Fragment Coversupporting

confidence: 53%

Impact of slope aspect on hydrological rainfall and on the magnitude of rill erosion in Belgium and northern France

BEULLENS

Velde

Nyssen

2014

CATENA

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The impact of slope aspect on hydrological rainfall and on the magnitude of rill erosion has rarely been studied. The dominant wind direction in Belgium and the northern of France is the southwest, which brings large amounts of rain with it. We investigated whether this leads to greater rates of rill erosion on the southwestern slopes, due to the greater amount of hydrological precipitation on these slopes. The study was executed on six barren conical spoil heaps, which are excellent study objects to bring the slope aspect in relation with rill erosion.Three indicators for rill erosion (volume of rills, drainage density and mean distance of the head cut of the five uppermost rills till the top of the spoil heap) were associated with four explanatory factors (slope gradient, vegetation density, rock fragment cover and slope aspect).The amount of hydrological rainfall is the greatest on the western and southwestern slopes. As a result, the largest volume of rills was measured on the slopes facing the southwest (96%), which indicates that there is a connection between the slope aspect and the magnitude of rill erosion. On the northeastern (32%) and eastern (36%) slopes the volume of rills is lower due to the effect of rain shadow. The other explanatory factors showed little influence on the magnitude of rill erosion, as the spoil heaps were selected to be similar in as many parameters as possible.Beullens, J., Van de Velde, D., Nyssen, J., 2014. Impact of slope aspect on hydrological rainfall and on the magnitude of rill erosion in Belgium and northern France. Catena,

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Section: Rock Fragment Coversupporting

confidence: 53%

Impact of slope aspect on hydrological rainfall and on the magnitude of rill erosion in Belgium and northern France

BEULLENS

Velde

Nyssen

2014

CATENA

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“…Specific interactions between aspect, other topographic variables, and fire behavior are unclear (Jain and Graham, 2004). The relationship between aspect and erosion behavior is considerably more tenuous (Easterbrook, 1993;Canfield et al, 2001). We conclude that the strong association between aspect and gully rejuvenation is due to the higher burn severity in the southwest to west aspects.…”

Section: Effect Of Basin Aspect On Gully Rejuvenationmentioning

confidence: 72%

Predicting gully rejuvenation after wildfire using remotely sensed burn severity data

2007

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“…Since Lucky Hills is a headwater watershed, its slopes and channel bed are the source of the vast majority of the fluvial sediment transport. The local drainage network is incising into a Holocene alluvial veneer covering the Whetstone Pediment, a gentle transport slope composed of Gleeson Road Conglomerate, underlying much of north-central Walnut Gulch (Gilluly 1956;Osterkamp 2008 (Canfield et al 2001). …”

Section: Study Areamentioning

confidence: 99%

Predicting Coarse Sediment Transport from Patchy Beds in Ephemeral Channels

Yuill¹

2012

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Seven 1-D sediment transport formulae are employed to predict coarse sediment transport in a low-order, ephemeral channel with patchy bed material. Sediment transport is modeled through two different methods to characterize the sediment supply: by using a channel-averaged grain-size distribution (GSD) and by using the mean GSDs from the relatively coarse and fine textured patches that compose the channel bed.Modeling results show that the two different characterizations of the sediment supply produce significantly different values of predicted coarse sediment yield. The relative differences in the predicted yield values are dependent on the assumptions of each formula, including how the sediment supply is parameterized within the model. Modeled sediment yield values are contrasted to observed values for seven flashflood-type runoff events. The formulae accuracies typically are comparable to past analyses in fluvial systems more reminiscent of the hydraulic environments in which the models were derived (perennial flow, gravel-bed material).Study results reaffirm that the method by which sediment supply is characterized significantly impacts the performance of sediment transport formulae and that a single GSD might not adequately describe the sediment supply originating from patchy beds.

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Hillslope characteristics and particle size composition of surficial armoring on a semiarid watershed in the southwestern United States

Cited by 21 publications

References 20 publications

Impact of slope aspect on hydrological rainfall and on the magnitude of rill erosion in Belgium and northern France

Impact of slope aspect on hydrological rainfall and on the magnitude of rill erosion in Belgium and northern France

Predicting gully rejuvenation after wildfire using remotely sensed burn severity data

Predicting Coarse Sediment Transport from Patchy Beds in Ephemeral Channels

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