Estimating the depth and shape of subglacial Lake Vostok's water cavity from aerogravity data

LDEO Publication: 
Publication Type  Journal Article
Year of Publication  2004
Authors  Studinger, M.; Bell, R. E.; Tikku, A. A.
Journal Title  Geophysical Research Letters
Volume  31
Issue  12
Pages  -
Journal Date  Jun 19
ISBN Number  0094-8276
Accession Number  ISI:000223886500006
LDEO Publication Number  6618
Key Words  east antarctica; ice; framework

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 km(3).


854FJTimes Cited:15Cited References Count:17

URL  <Go to ISI>://000223886500006
DOI  Doi 10.1029/2004gl019801