Ice-wedges as ground-water conductors

Abstract

On the support of observations collected in the environs of Warsaw, the author presumes that ice-wedges may afford good passages for rain-water into the aquifers underlying ill-pervious beds. This explains the ready reaction to rainfall of the water-table overlain with impermeable layers. Observations collected in the area of the middle Vistula river seem also to confirm the author's supposition that phenomenon may assume an important role in vast areas.