This paper gives the results of investigations carried out in the Fugleberget
basin which lies on the northern shore of the Hornsund Fiord, in the unglaciated region
of raised sea terraces and on the slopes of the Fugleberget (569 m a.s.l.) and the
Ariekammen (511 m a.s.l.). The investigations were carried out between 23 July, 1979
and 4 September, 1980, including the polar night. The Fugleberget basin represents well
the area of sea terraces and coastal mountains uncovered with glacier and occupying large
areas in West Spitsbergen. These areas are characterized by the presence of permafrost.
The aim of investigations was to determine such fluvial processes as the duration
of the hydrological period, the manner of water supply to the basin and an attempt
to define the elements of the water balance. In addition studies were made on hydrological
processes, particulary changes in the chemical composition of water, and the magnitude
of denudation determined
