potentiometric head

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• potentiometric field —    As used in karst hydrology, a discontinuous highly irregular surface representing the static ground water head as indicated by the level to which water rises in a selected piezometer. In some piezometers, the water level rise will be greatly… …   Lexicon of Cave and Karst Terminology

• potentiometric surface —    An imaginary surface representing the total static head of ground water and defined by the level to which water will rise in a piezometer [22]. Replaces the term piezometric surface …   Lexicon of Cave and Karst Terminology

• ZOOMQ3D — is a numerical finite difference model, which simulates groundwater flow in aquifers. The program is used by hydrogeologists to investigate groundwater resources and to make predictions about possible future changes in their quantity and quality …   Wikipedia

• MODFLOW — simulation MODFLOW is the U.S. Geological Survey modular finite difference flow model, which is a computer code that solves the groundwater flow equation. The program is used by hydrogeologists to simulate the flow of groundwater through aquifers …   Wikipedia

• Horowhenua District — Horowhenua is a district on the west coast of the North Island of New Zealand. Unlike many other districts, it has a distinct identity, so much so that The Horowhenua , as it is usually called, is regarded more as distinct region than as part of… …   Wikipedia

• hydraulic gradient —    1. The change in static head per unit of distance in a given direction. If not specified, the direction generally is understood to be that of the maximum rate of decrease in head [22].    2. Slope of the water table or potentiometric surface… …   Lexicon of Cave and Karst Terminology

• Silver — This article is about the chemical element. For the color, see Silver (color). For other uses, see Silver (disambiguation). palladium ← silver → cadmium …   Wikipedia

• Potentiometer (measuring instrument) — A potentiometer is an instrument for measuring the potential (voltage) in a circuit. Before the introduction of the moving coil and digital volt meters, potentiometers were used in measuring voltage, hence the meter part of their name. The method …   Wikipedia

• buildup —    The vertical distance the water table or potentiometric surface is raised, or the increase of the pressure head due to the addition of water [22] …   Lexicon of Cave and Karst Terminology

• drawdown —    1. The vertical distance the water elevation is lowered or the reduction of the pressure head due to the removal of water [22].    2. The decline in potentiometric surface at a point caused by the withdrawal of water from a hydrogeologic unit… …   Lexicon of Cave and Karst Terminology

• equipotential line —    or surface    1. A contour line on the potentiometric surface along which the pressure head of ground water in the aquifer is the same. Fluid flow is normal to these lines in the direction of decreasing fluid potential [6].    2. Line (or… …   Lexicon of Cave and Karst Terminology