Jökull - 01.12.1974, Page 16

Fig. 11. A map of the north-western part of Vatnajökull showing the negative subglacial water
pressure gradient, derived by assuming the water pressure equal to the ice overburden pressure.
If water moved toward Grímsvötn by a subglacial sheet flow, the map would illustrate the water
drainage. The dottecl line marks the watershed.
Mynd 11. Kort af norðvesturhluta Vatnajökuls. Ef vatn streymdi i vatnshimnu undir jökli til
Grímsvatna, myndi þessi mynd sýna stefnu og styrli þess straums.
1 4 JÖKULL 24. ÁR