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Cyclic aggradation and downcutting, fluvial response to volcanic activity, and calibration of soil-carbonate stages in the western Grand Canyon, Arizona
In the western Grand Canyon, fluvial terraces and pediment surfaces, both associated with a Pleistocene basalt flow, document Quaternary aggradation and downcutting by the Colorado River, illuminate the river's response to overload and the end
of overload, and allow calibration of soil-carbonate stages and determination of downcutting rates. Four downcutting-aggradation cycles are present. The current downcutting rate, 11-14m/1000 yr, likely is a response both to the end of late Pleistocene

Present-day downcutting of the Raba River channel (Western Carpathians, Poland) and its environmental effects
Biotopes ; Carpathians ; Catchment area;Watershed ; Discharge ; Downcutting;Incision ; Drainage network ; Environment ; Flow ; Fluvial basin;Watershed ; Fluvial processes ; Impact ; Mountain ; Poland ; River bed ; Sediment load ; Soil erosion
Timing and causes of the present-day channel downcutting of Carpathian tributaries to the Vistula River are exemplified by a case study of the Raba River. This gravel-bed stream is characterized by great variability of water stage and discharge
. Lowering of ground-water levels on the valley floor, impoverishment of plant and animal communities of riverside biotopes are some of environmental effects of channel downcutting.

The types of river reaches for the major Hungarian rivers/lower reaches: alluvial fan accumulation| meandering and downcutting| meandering and infilling| equilibrium or final state| upper reaches: downcutting/ are demonstrated on map. Grain size
distribution of channel fill and load are studied. Most of the rivers belong to the downcutting type which is promoted by river regulations increasing slope. (DLO).

The slab-failure of a cliff composed of granular assemblies due to downcutting: a laboratory approach
The mechanism for instability of a cliff made of soil mass due to downcutting was examined through an experiment using a new apparatus having no side walls. The cliff is made by piling an assembly of wetting aluminium rods. The following points can

The Wutach gorge in SW Germany: late Würmian (periglacial) downcutting versus Holocene processes

The changes in local relief and the followed river downcutting occurred in the investigated area during the Middle to the Upper Quaternary. (MS).

Alluvium ; Colorado ; Downcutting ; Fluvial terrace ; Geochemistry ; Isotope dating ; Numerical model ; Quaternary ; United States of America ; Watershed
modeling of isotope concentration depth profiles suggests that individual sites have experienced multiple resurfacing events. Fluvial incision into these surfaces appears therefore to progress headward in response to downcutting of the South Platte River

Late Quaternary downcutting rates of the Qianyou River from U/Th speleothem dates, Qinling mountains, China

Downcutting;Incision ; Experimentation ; Gully erosion ; Hydrodynamics ; Rainfall ; Rill wash;Runoff ; Roughness ; Sediment load ; Sedimentary ; Simulated rainfall ; Soil erosion

An anomalous multiple channel pattern in bedrock is observed on a predominantly downcutting reach of the Narmada River. The major objectives of this paper are to report and explain the morphologic character of the multi-channel reach of the Narmada

Downcutting;Incision ; Fluvial dynamics ; Fluvial processes ; Holocene ; Human impact ; Hydrometeorology ; Pedogenesis ; Precipitation ; Quaternary ; River bed ; Soil ; Stream ; United States ; Utah

This paper focuses on downcutting rates and stream profile development measured in rock salt cave stream passages in the Mount Sedom salt diapir, Dead Sea rift valley, Israel. Although the area is very arid, the diapir contains extensive karst

, depositional environments, and the chronology of aggradation and downcutting are considered. This study concerns headwater basins which are upstream of the limits of permanent channels but occasionally have been invaded by deep gully networks.

Ardèche ; Downcutting ; Drôme ; Extractive industry ; Fluvial dynamics ; France ; Human impact ; Hydraulic works ; Rhône-Alpes ; Stream

L'enfoncement du lit de la Loire

Downcutting ; Ecology ; Extractive industry ; Fluvial dynamics ; France ; Human impact ; Loire ; Stream

Deforestation ; Downcutting ; Fauna ; Fluvial dynamics ; Fluvial erosion ; Human impact ; Mountain ; Over-grazing ; Stream ; United States

Australia ; Climatic variation ; Downcutting ; Fluvial dynamics ; Fluvial erosion ; Human impact ; Impact ; New South Wales ; Stream

is controlled by the lithology and stratigraphy of underlying bedrock; and 3) avulsion may locally occur along downcutting stream channels.

The adjustment of channel geometry and phases of channel evolution are characterized by six process-oriented stages of morphologic development : premodified, constructed, degradation, threshold, aggradation, and restabilization. Downcutting and toe

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