Dye tracer tests of water movement at the glacier Austre Okstindbreen, Norway.

Whilst some water passes rapidly through the glacier from points of entry at the surface, considerable delays characterise throughflow from many points. Relatively low ice permeability is indicated by the results of a test in which tracer injected into water entering a crevasse re-emerged in water overflowing from another crevasse, and in which one water-filled crevasse remained tracer-free although the water in another crevasse only a metre away became strongly coloured by the dye.-from Authors