Search results
Results from the WOW.Com Content Network
The height of a base level also influences the position of deltas and river terraces. [1] Together with river discharge and sediment flux the position of the base level influences the gradient, width and bed conditions in rivers. [10] A relative drop in base level can trigger re-adjustments in river profiles including knickpoint migration and ...
A drop in base level causes a response by the river system to carve into the landscape. This incision begins at the formation of a knickpoint, and its upstream migration depends heavily upon the drainage area (and so the discharge of the river), material through which it cuts, and how large the drop in base level was. [7]
Geomorphology (from Ancient Greek ... In this way, rivers are thought of as setting the base level for large-scale landscape evolution in nonglacial environments.
In geomorphology, geography and geology, a bench or benchland is a long, relatively narrow strip of relatively level or gently inclined land bounded by distinctly steeper slopes above and below it. Benches can be of different origins and created by very different geomorphic processes.
A small plunge pool may be present at the base of the head cut due to the high energy of falling water. As erosion of the knickpoint and the streambed continues, the head cut will migrate upstream. [3] Groundwater seeps and springs are sometimes found along the face, sides, or base of a head cut. [4] [5]
The scheme of Tricart and Cailleux emphasizes the relationship between geomorphology, climate and vegetation. [4] An early attempt at morphoclimatic zoning is that of Albrecht Penck in 1910, who divided Earth in three zones depending on the evaporation - precipitation ratios.
Traditionally in geomorphology, a flatiron is a steeply sloping triangular landform created by the differential erosion of a steeply dipping, erosion-resistant layer of rock overlying softer strata. Flatirons have wide bases that form the base of a steep, triangular facet that narrows upward into a point at its summit.
Sediments underlying fluvial terrace exposed in cutbanks along the Manú River, Peru. In geology, a terrace is a step-like landform. A terrace consists of a flat or gently sloping geomorphic surface, called a tread, that is typically bounded on one side by a steeper ascending slope, which is called a "riser" or "scarp".