Ring Study

ring study - [analysis/geoprocessing] The simplest and most widely used type of market-area analysis, in which a circle is generated around an area on a map; then the underlying demographics are extracted from the area delineated by the circle. Generally, a ring study is used to generate a rough visualization of the market area around a point. 

[Category=Geospatial ]

Source: esri,05 August 2012 09:32:01 , http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation