Jökull - 01.06.2000, Side 38

Surface and bedrock topography of Mýrdalsjökull
20 km
Figure 7. Perspective plot of the sub-ice topography of Mýrdalsjökull and surroundings. View from SW. –
Fjarvíddarmynd af botni Mýrdalsjökuls og nágrenni. Horft í norðaustur.
0 5 10 km
Figure 8. Ice thickness of Mýrdalsjökull, 100 m
contours. – Ísþykktarkort af Mýrdalsjökli.
ICE CATCHMENT BASINS
The ice flow of Mýrdalsjökull is separated into many
distinct ice catchment basins. The boundaries of five
main ice catchment basins have been delineated us-
ing the surface elevation map (Figure 9, Table 1). We
assume that the location of the central flow divide
of the ice cap corresponds to the highest ice-surface
profile. The boundaries of the major ice drainage bas-
ins were drawn manually upstream from the edge to
the highest point, perpendicular to smoothed elevation
contours.
The main ice divides are located on the southern,
western and northern rims of the caldera. Kötlujökull
collects ice across the entire reach of the caldera, from
an ice divide at the head of Entujökull, from where it
flows over 20 km downslope to Mýrdalssandur. The
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