phreatic low water table

См. также в других словарях:

• water table —    1. The top surface of a body of slowly moving ground water that fills the pore spaces within a rock mass. Above it lies the freely draining vadose zone, and below it lies the permanently saturated phreas. In uniform aquifers, such as sandstone …   Lexicon of Cave and Karst Terminology

• Water content — Soil composition by phase: s soil (dry), v void (pores filled with water or air), w water, a air. V is volume, M is mass. Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture),… …   Wikipedia

• Aquifer — Typical aquifer cross section An aquifer is a wet underground layer of water bearing permeable rock or unconsolidated materials (gravel, sand, or silt) from which groundwater can be usefully extracted using a water well. The study of water flow… …   Wikipedia

• Groundwater — Shipot, a common source of drinking water in a Ukrainian village. Groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of rock formations. A unit of rock or an unconsolidated deposit is called an… …   Wikipedia

• hydrosphere — /huy dreuh sfear /, n. the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. [1885 90; HYDRO 1 + SPHERE] * * * Discontinuous layer of water at or near the Earth s surface. It… …   Universalium

• Chad Basin — The Chad Basin, also known as the Lake Chad Basin, is a large lowland area in north central Africa. In all directions from the center of this area the elevation changes are gentle. The Chad Basin is an endorheic (closed) basin its water does not… …   Wikipedia

• Mauna Kea — with its seasonal snow cap visible Elevation 4,205 m (13,796  …   Wikipedia

• master cave —    Best defined as a low level trunk streamway cave with many tributaries. The old concept of the master cave being formed at the water table should be disregarded. The Leck Fell Master Cave, in the Yorkshire Dales, is 2km long, partly a vadose… …   Lexicon of Cave and Karst Terminology

• Gley soil — in soil science is a type of hydric soil which exhibits a greenish blue grey soil color due to wetland conditions. On exposure to the air, gley colors are transformed to a mottled pattern of reddish, yellow or orange patches. During gley soil… …   Wikipedia

• Eucalyptus — taxobox name = Eucalyptus image caption = Eucalyptus melliodora foliage and flowers regnum = Plantae unranked divisio = Angiosperms unranked classis = Eudicots unranked ordo = Rosids ordo = Myrtales familia = Myrtaceae genus = Eucalyptus genus… …   Wikipedia

• Geology of Mars — Mars   Mars as seen by the Hubble Space Telescope Designations …   Wikipedia