Jökull - 01.01.2021, Page 38

Gudmundsson et al.
Appendix A: Estimates of balance velocities for
Kötlujökull and Sólheimajökull
The balance velocities for the outlet glaciers were esti-
mated by using numbers from Ágústsson et al. (2013)
on net balance on the accumulation areas, with the
maximum set for Kötlujökull of 4.2 m water equiva-
lent, and 3.2 m w.e. for Sólheimajökull. Area for each
100 m height interval was measured from the lidar-
derived surface map of Mýrdalsjökull (Jóhannesson
et al., 2013), and the equilibrium lines set at 1000 m
Table A1: Kötlujökull – mass balance as a function of height, cross-sections, calculated balance velocities and
travel times. – Kötlujökull: Afkoma sem fall af hæð, þversnið og reiknaður jafnvægishraði og ferðatími.
Table A2: Sólheimajökull – mass balance as a function of height, cross-sections, calculated balance velocities
and travel times. – Sólheimajökull: Afkoma sem fall af hæð, þversnið og reiknaður jafnvægishraði og ferðatími.
Explanations: The ice drainage areas are shown on Figure 4a. and the cross sections are taken at elevation
intervals of 100 m. Net balance of ice is obtained by dividing the water equivalent net balance with the ratio
of densities of ice and water. B is obtained by multiplying the net balance (in m/yr) by the area. Distances are
measured using the central flowlines (see Figure 4). – Skýringar: Ísasvæðin eru á mynd 4a og þversnið eru
tekin á hverju 100 m hæðarbili. Afkoma er fengin með því að deila í vatnsgildið með eðlismassahlutfalli íss
og vatns. B fæst með því margfalda afkomuna með flatarmáli hvers hæðarbils. Fjarlægðir eru mældar eftir
straumlínu í miðju hvors jökuls.
36 JÖKULL No. 71, 2021