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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | |
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First Edition Preface Second Edition Preface Acknowledgments
Section A A index 651-659 of 917 terms
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applied hydrology—Branch of hydrology associated with the practical use of the science to solve technical problems.
applied meteorology—A field of study where weather data, analyses, and forecasts are put to practical use. Examples of applications include environmental health, weather modification, air pollution meteorology, agricultural and forest meteorology, transportation, value-added product development and display, and all aspects of industrial meteorology. Compare applied climatology.
Houghton, D. D., 1984: Handbook of Applied Meteorology, 1328 pp.
approach channel—Channel reach upstream of a gauging station or a control structure; the reach is chosen such that flow is uniform at the station.
approach-light contact height—(Also called visual approach contact height.) The altitude along the instrument approach glide path of a landing aircraft from which the pilot will first see 500 ft of the approach light array. See runway visual range; compare approach visibility.
approach velocity—Mean flow velocity, measured a short distance upstream of a hydraulic structure.
approach visibility—(Sometimes called slant visibility.) The distance from which a pilot on the instrument approach glide path can see landing aids at the runway threshold. Compare approach-light contact height, oblique visual range; see also runway visual range.
APT—Abbreviation for automatic picture transmission.
aqueous vapor—Same as water vapor.
aquiclude—A geologic formation that may contain water but is incapable of transmitting water in significant quantities.
aquifer system—A group of two or more aquifers that are separated by aquitards or aquicludes.
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