- transparency by Secchi disk
- SEWAGE TREATMENT TERMS ТНТ №004
прозрачность по диску Секки
New terms dictionary. 2013.
transparency by Secchi disk
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Secchi disk — The Secchi disk, created in 1865 by Pietro Angelo Secchi, is a circular disk used to measure water transparency in oceans and lakes. The disc is mounted on a pole or line, and lowered slowly down in the water. The depth at which the pattern on… … Wikipedia
Angelo Secchi — Infobox Scientist name = Angelo Secchi box width = image width =150px caption = Angelo Secchi birth date = 29 June 1818 birth place = Reggio Emilia death date = 26 February 1878 death place = residence = Rome citizenship = nationality = Italian… … Wikipedia
Lake — For other uses, see Lake (disambiguation). Oeschinen Lake in the Swiss Alps A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the… … Wikipedia
undersea exploration — Introduction the investigation and description of the ocean waters and the seafloor and of the Earth beneath. Primary objectives and accomplishments Included in the scope of undersea exploration are the physical and chemical… … Universalium
Turbidity — standards of 5, 50, and 500 NTU Turbidity is the cloudiness or haziness of a fluid caused by individual particles (suspended solids) that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key… … Wikipedia
Trophic state index — The quantities of nitrogen, phosphorus, and other biologically useful nutrients are the primary determinants of a body of water s trophic state index (TSI). Nutrients such as nitrogen and phosphorus tend to be limiting resources in standing water … Wikipedia
Photic zone — The photic zone or euphotic zone (Greek well lit ) is the depth of the water in a lake or ocean, that is exposed to sufficient sunlight for photosynthesis to occur. The depth of the photic zone can be greatly affected by seasonal turbidity.It… … Wikipedia
Lake George (Anoka County) — Infobox lake lake name = Lake George image lake = caption lake = image bathymetry = LakeGeorge layout.jpg caption bathymetry = map location = Anoka County, Minnesota coords = coord|45|21|25|N|093|20|10|W|type:waterbody… … Wikipedia
Forel-Ule scale — The Forel Ule Scale is a method to approximately determine the color of bodies of water, used in limnology and oceanography. By means of different inorganic compounds (ammonia, copper sulfate, neutral potassium chromate) a color palette is… … Wikipedia
