An antidune is an upper flow regime
sedimentary structurefound in aquatic environments. In an antidune system, material is deposited on the lee side and eroded from the stoss side. Waves follow the curves of the antidunes, rather than being offset as in dunes.
Wikimedia Foundation. 2010.
Look at other dictionaries:
Dune — For other uses, see Dune (disambiguation). Erg Chebbi, Morocco … Wikipedia
Canyon — For other uses, see Canyon (disambiguation). Gorge redirects here. For the figure from Greek mythology, see Gorge (mythology). For the old English meaning, see throat. Grand Canyon, Arizona … Wikipedia
River delta — Nile River delta, as seen from Earth orbit. The Nile is an example of a wave dominated delta that has the classic Greek delta (Δ) shape after which river deltas were named. A delta is a landform that is formed at the mouth of a river where that… … Wikipedia
Drainage basin — Example of a drainage basin. The dashed line is the main water divide of the hydrographic basin A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit… … Wikipedia
Mojave River — Coordinates: 36°06′20″N 116°03′53″W / 36.10556°N 116.06472°W / 36.10556; 116.06472 … Wikipedia
Deposition (geology) — Map of Cape Cod showing shores undergoing erosion (cliffed sections) in red, and shores characterized by marine deposition (barriers) in blue Deposition is the geological proc … Wikipedia
Oxbow lake — Songhua River, northeast China. Swirls and curves, showing paths the river once took, as well as oxbow lakes, are easily seen in this satellite photo. An oxbow lake is a U shaped body of water formed when a wide meander from the main stem of a… … Wikipedia
Meander — For other uses, see Meander (disambiguation). A hypothetical stream bed following a tilted valley. The maximum gradient is along the down valley axis represented by a hypothetical straight channel. Meanders develop, which lengthen the course of… … Wikipedia
Knickpoint — The Horseshoe Falls, one of the three Niagara Falls. The falls are a knickpoint, formed by slower erosion above the falls than below. A knickpoint is a term in geomorphology to describe a location in a river or channel where there is a sharp… … Wikipedia
Channel types — A wide variety of river and stream channel types exist in limnology. All these can be divided into two groups by using the water flow gradient as either low gradient channels for streams or rivers with less than two percent (2%) flow gradient, or … Wikipedia