- 行业: Earth science
- Number of terms: 26251
- Number of blossaries: 0
- Company Profile:
An international scientific society that fosters the transfer of knowledge and practices to sustain global soils. Based in Madison, WI, and founded in 1936, SSSA is the professional home for 6,000+ members dedicated to advancing the field of soil science. It provides information about soils in ...
A color picture produced by assigning a color to a particular spectral band. Ordinarily blue is assigned to band 1 or 4 (~ 500 to 600 nm), green to band 2 or 5 (~ 600 to 700 nm), and red to band 3 (~ 700 nm to 1 µm) or 7 (~ 800 nm to 1. 1 µm), to form a picture closely approximating a color-infrared photograph.
Industry:Earth science
A drainage collection system to capture leachate generated from an area for monitoring or treatment purposes, commonly used with landfills.
Industry:Earth science
A sedimentation procedure which utilizes pipette sampling at controlled depths and times.
Industry:Earth science
(i) The state of dryness at equilibrium with the water content in the surrounding atmosphere. The actual water content will depend upon the relative humidity and temperature of the surrounding atmosphere. (ii) To allow to reach equilibrium in water content with the surrounding atmosphere.
Industry:Earth science
A mineral soil horizon of secondary CaSO4 enrichment that is >15 cm thick, has at least 50 g kg-1 more gypsum than the C horizon, and in which the product of the thickness in centimeters and the amount of CaSO4 is equal to or greater than 1500g kg-1.
Industry:Earth science
A layer occurring in mor humus consisting of well-decomposed organic matter of unrecognizable origin (sapric material).
Industry:Earth science
A product obtained when phosphate rock is treated with H2SO4, H3PO4, or a mixture of those acids.
* ammoniated - A product obtained when superphosphate is treated with NH3 or with solutions containing NH3 and/or other NH4-N containing compounds.
* concentrated - Also called triple or treble superphosphate, made with phosphoric acid and usually containing 19 to 21% P (44 to 48% P2O5).
* enriched - Superphosphate made with a mixture of sulfuric acid and phosphoric acid. This includes any grade between 10 and 19% P (22% and 44% P2O5), commonly 11 to 13% P (25 to 30% P2O5).
* normal - Also called ordinary or single superphosphate. Superphosphate made by reaction of phosphate rock with sulfuric acid, usually containing 7 to 10% P (16 to 22% P2O5).
* ordinary - See superphosphate, normal.
* single - See superphosphate, normal.
Industry:Earth science
A layer of sediment, eroded from the shoulder and back slope of an erosional slope, that lies on and is, or was, being transported across a pediment.
Industry:Earth science
A procedure used to determine the rate at which water moves out of an auger hole.
Industry:Earth science
