drainage patterns

См. также в других словарях:

• Drainage system (geomorphology) — In geomorphology, a drainage system is the pattern formed by the streams, rivers, and lakes in a particular drainage basin. They are governed by the topography of the land, whether a particular region is dominated by hard or soft rocks, and the… …   Wikipedia

• thermokarst drainage pattern —    Drainage patterns that form polygonal and hexagonal shapes with streams that may connect rounded depressions, exhibiting a beaded appearance; developed in poorly drained, fine grained sediments and in organic materials in regions of permafrost …   Glossary of landform and geologic terms

• deranged drainage pattern —    A distinctively disordered drainage pattern of nonintegrated streams which indicates a complete lack of underlying structural and bedrock control, resulting from a relatively young landscape having a flat or undulating topographic surface and… …   Glossary of landform and geologic terms

• deranged drainage system — a system without any obvious or coherent pattern as a result of much geological disturbance, as in areas cleared of soil cover by ice ages. The drainage patterns are still being determined and the glaciers left much water that accumulates in low… …   Dictionary of ichthyology

• irrigation and drainage — ▪ agriculture Introduction  artificial application of water to land and artificial removal of excess water from land, respectively. Some land requires irrigation or drainage before it is possible to use it for any agricultural production; other… …   Universalium

• rectangular drainage pattern —    A drainage pattern in which the tributaries join the main streams at right angles, and exhibit sections of approximately the same length which form rectangular shapes; it is indicative of streams following prominent bedrock fault, joint, or… …   Glossary of landform and geologic terms

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium

• Headward erosion — is a fluvial process of erosion that lengthens a stream, a valley or a gully at its head and also enlarges its drainage basin. The stream erodes away at the rock and soil at its headwaters in the opposite direction that it flows. Once a stream… …   Wikipedia

• valley — valleylike, adj. /val ee/, n., pl. valleys. 1. an elongated depression between uplands, hills, or mountains, esp. one following the course of a stream. 2. an extensive, more or less flat, and relatively low region drained by a great river system …   Universalium

• Europe — /yoor euhp, yerr / for 1; /yoo roh pee, yeuh / for 2, n. 1. a continent in the W part of the landmass lying between the Atlantic and Pacific oceans, separated from Asia by the Ural Mountains on the E and the Caucasus Mountains and the Black and… …   Universalium

• Mekong — River (Mae Nam Khong) Megaung Myit, แม่น้ำโขง (Maenam Khong), Mékôngk, Tonle Thom, Cửu Long, Mê Kông, 湄公 (Méigōng) …   Wikipedia