drawdown pressure

См. также в других словарях:

• drawdown — the release of water from the reservoir of a dam for power generation, flood control, irrigation or other water management activity. Also the vertical distance the water is lowered or the reduction in the pressure …   Dictionary of ichthyology

• 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

• Downhole oil–water separation technology — (DOWS) is an emerging technology that separates oil and gas from produced water at the bottom of the well, and re injects most of the produced water into another formation which is usually deeper than the producing formation, while the oil and… …   Wikipedia

• Aquifer test — An aquifer test (or a pumping test) is conducted to evaluate an aquifer by stimulating the aquifer through constant pumping, and observing the aquifer s response (drawdown) in observation wells. Aquifer testing is a common tool that… …   Wikipedia

• Agriculture and Food Supplies — ▪ 2007 Introduction Bird flu reached Europe and Africa, and concerns over BSE continued to disrupt trade in beef. An international vault for seeds was under construction on an Arctic island. Stocks of important food fish species were reported… …   Universalium

• Causes of landslides — The causes of landslides are usually related to instabilities in slopes. It is usually possible to identify one or more landslide causes and one landslide trigger. The difference between these two concepts is subtle but important. The landslide… …   Wikipedia

• Silurian Period — Interval of geologic time, 443–417 million years ago. The third period of the Paleozoic Era, the Silurian follows the Ordovician Period and precedes the Devonian. It marks the first appearance of land plants and jawed fishes. The continents were… …   Universalium

• Messinian salinity crisis — Events of the Cenozoic view • discuss •  …   Wikipedia

• War in Afghanistan (2001–present) — War in Afghanistan Part of the Afghan civil war and the War on Terror …   Wikipedia

• Cone of depression — A cone of depression occurs in an aquifer when groundwater is pumped from a well. In an unconfined aquifer (water table), this is an actual depression of the water levels. In confined aquifers (artesian), the cone of depression is a reduction in… …   Wikipedia

• climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… …   Universalium