Abstract

Approximately 30 reversing barchan dunes occur along the northern side of lower Victoria Valley, Antarctica. Laminae which dip steeply upwind suggest that much of the internal structure of the dunes develops during periods when the wind reverses itself—possibly during winter. This wind reversal and the fact that the dune cores are frozen suggest that the migration of the dunes is small. Grain-size analyses of the dune sands indicate that the dunes are similar in texture to some barchans of more temperate climates.

First Page Preview

First page PDF preview
You do not currently have access to this article.