A standard unit of permeability, equivalent to the passage of one cubic centimeter of fluid of one centipoise viscosity flowing in one second under a pressure diffrential of one atmosphere through a porous medium having an area of cross section of one square centimeter and a length of one centimeter.
Reference: R.L. Bates & J.A. Jackson, DICTIONARY OF GEOLOGICAL TERMS, Third Edition, American Geological Institute, 1983.
Silicate minerals containing ions of iron and/ or magnesium in their structure. They are dark in color and have a higher specific gravity than nonferromagnesian silicates.
Reference : Tarbouk, E.J. & F.K. Lutgens, (2006), EARTH, 8th edition, Pearson Education International.
a method proposed by John K. Wright to estimate densities using areal interpolation and quantitative puzzle-solving; more generally, a type of thematic map whose boundaries are conditioned by some other distribution.
DCS units are flown on both GOES and NOAA polar-orbiting spacecraft. They gather and relay data from both mobile and stationary platforms at various locations. DCS units on NOAA satellites can also determine the precise location of moving platforms at the time the data were acquired.
Remote Sensing Glossary
Reference Information for Virtual Nebraska
In the database literature
1) general description of sets of entities and the relationships between these sets of entities (Ullman 1982)
2) collection of object types, collection of operators on those object types and a collection of integrity constraints (Codd 1981).
[Integrity constaints are the axioms of a data model.]
In a GIS, composed of a measurement framework and scheme for representation.