Studinger Michael author Columbia University. Lamont-Doherty Earth Observatory Bell Robin E. author Columbia University. Lamont-Doherty Earth Observatory Tikku Anahita A. author Columbia University. Lamont-Doherty Earth Observatory originator text Articles 2004 English We use aerogravity data to estimate the water depth of subglacial Lake Vostok in East Antarctica. The inversion produces the first bathymetry map covering the entire lake. Lake Vostok consists of two subā€basins separated by a ridge with very shallow water depths. The deeper southern subā€basin is approximately double the spatial area of the smaller northern subā€basin. The close correlation between the pattern of basal melting and freezing and the bathymetric structure has important ramifications for the water circulation and the sediment deposition. We estimate the lake volume to be 5400 Ā± 1600 km3. Hydrologic sciences Marine geology Geophysics 31 L12401 L12401 2004 http://dx.doi.org/10.1029/2004GL019801 http://hdl.handle.net/10022/AC:P:10761 NNC NNC 2011-07-20 14:32:37 -0400 2013-01-23 15:58:25 -0500 4712 eng