sentences:  The data from ERS-1 confirmed the findings from the 1973 British surveys, but these new data were not published in the "Journal of Glaciology" until 1993.Space-based radar revealed that this subglacial body of fresh water is one of the largest lakes in the world, and one of some 140 subglacial lakes in Antarctica.Russian and British scientists delineated the lake in 1996 by integrating a variety of data, including airborne ice-penetrating radar imaging observations and space-based radar altimetry.