Estimating the depth and shape of subglacial Lake Vostok's water cavity from aerogravity data
Article first published online: 19 JUN 2004
Copyright 2004 by the American Geophysical Union.
Geophysical Research Letters
Volume 31, Issue 12, June 2004
How to Cite
2004), Estimating the depth and shape of subglacial Lake Vostok's water cavity from aerogravity data, Geophys. Res. Lett., 31, L12401, doi:10.1029/2004GL019801., , and (
- Issue published online: 19 JUN 2004
- Article first published online: 19 JUN 2004
- Manuscript Accepted: 17 MAY 2004
- Manuscript Revised: 27 APR 2004
- Manuscript Received: 24 FEB 2004
 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 sub-basins separated by a ridge with very shallow water depths. The deeper southern sub-basin is approximately double the spatial area of the smaller northern sub-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 ± 1600 km3.