The lake level dataset contains data on the reconstructed extent of the Aral
and Caspian Seas during the last glacial maximum 18,000 YBP. The
reconstructions were made by Olga Dennisenko (Department of Geography, Moscow
State University), Sandy Harrison (Department of Earth Sciences, Uppsala
University), Colin Prentice (Department of Plant Ecology, Lund University), and
Martin Sykes (Department ... of Ecological Botany, Uppsala University).
The data file BIGSEA.DAT is an ASCII file containing the Latitude and Longitude
of one-half degree grid cells which were expanded lake areas at 18,000 YBP.
The catchment areas computed are based on the work of Kvasov, which indicate a
lake level rise of +74m. The Caspian Sea reconstruction is believed to be
reliable, while the Aral Sea evidence is equivocal. The authors recommend using
only the Caspian Data.
Geomorphic evidence indicates that the Aral and Caspian Seas were much expanded
at the last glacial maximum. This gridded dataset shows the extent of these
lakes at 0.5 resolution, based on the work of Kvasov (1975a, 1975b) which
indicates a lake level rise of +74m.