Jökull - 31.12.2001, Side 79

Mass balance 1991-2001
Year Winter m Summer m Annual m ELA m a.s.l. AAR %
Tungnaárjökull (352 km ö
1991-1992 1,74 -1,50 0,24 1125 67
1992-1993 1,87 -1,74 0.13 1130 65
1993-1994 1,70 -1,84 -0,14 1160 60
1994-1996 surge
1996-1997 0.96 -2,84 -1,88 1420 21
1997-1998 0,81 -2,3 -1,5 1460 18
1998-1999 1,15 -2,17 -1,02 1230 51
1999-2000 1,36 -2,64 -1,28 1310 40
2000-2001 1,05 -2,64 -1,71 1310 41
Köldukvíslarjökull (313 km^)
1991-1992 1,9 —0,9 ~1,0 1200 72
1992/1993
1993-1994 ~ 1.43 — 1,47 —0,03 1300 61
1994-1995 1,30 -1,89 -0,59 1410 52
1995-1996 1,37 -1,76 -0,39 1410 50
1996-1997 1,39 -2,56 -1,17 1590 28
1997-1998 0,97 -2,00 -1,03 1540 35
1998-1999 1,23 -1,77 -0,54 1300 61
1999-2000 1,31 -2,04 -0,73 1450 47
2000-2001 0,88 -1,85 -0,97 1480 44
Dyngjujökull (1040 km2)
1991-1992 2,08 —0,4 ~1,7 1200 75
1992-1993 1,6 -0,33 1,27 1100 86
1993-1994 1,44 -1,25 0,19 1250 71
1994-1995 1,47 -1,45 0,02 1310 62
1995-1996 1,37 -1,76 -0,39 1410 53
1996-1997 1,13 -2,19 -1,06 1490 47
1997-1998 1,21 -1,7 -0,5 1385 59
1998-2000 surge
2000-2001 no data
Brúarjökull (1695 km^)
1992-1993 1,63 -0,54 1,09 1070 77
1993-1994 1,75 -1,47 0,28 1140 67
1994-1995 1,64 -1,84 -0,20 1260 50
1995-1996 1,66 -1,88 -0,22 1230 58
1996-1997 1,13 -2,48 -1,35 1350 34
1997-1998 1,19 -1,9 -0,7 1220 59
1998-1999 1,42 -1,72 -0,30 1200 62
1999-2000 1,33 -2,44 -1,01 1450 42
2000-2001 1,66 -1,55 0,11 1200 62
Eyjabakkajökull (119 km^)
1995-1996 2,38 -3,23 -0,85 1080 53
1996-1997 1,19 -3,41 -2,22 1290 10
1997-1998 1,21 -2,60 -1,40 1240 21
1998-1999 1,39 -2,50 -1,12 1120 45
1999-2000 1,05 -3,07 -2,02 1240 21
2000-2001 2,10 -2,02 0,08 1040 60
Breiðamerkurjökull (905 km2)
1995-1996 -3,01 1100 53
1996-1997 0,77 -2,61 -1,84 1240 44
1997-1998 1,01 -2,44 -1,43 1180 48
1998-1999 no data 1150 51
1999-2000 1,30 -2,52 -1,22 1180 48
2000-2001 1,13 -2,37 -1,24 1150 51
Langjökull (925 km^)
1996-1997 1,90 -3,20 -1.30 1100*,?** 30
1997-1998 1,12 -2,82 -1,70 1175*,1375** 10
1998-1999 1,50 -2,27 -0,77 1050», 1300». 40
1999-2000 2,13 -2,88 -0,75 1025». 1300». 43
2000-2001 1,28 -2,55 -1,27 1150*,1300** 28
Table 1. MASS BALANCE between 1991-1992 and 2000-
2001. Winter, summer and annual balance. ELA: equilibri-
urn line altitude. AAR: accumulation area ratio. ELA for
Langjökull is devided between its southern (★) and northern
dome (★★). - Afkoma Langjökuls og skriðjökla Vatnajök-
uls 1991—2001. Vetrar-, sumar- og ársafkoma. ELA: hœð
jafnvœgislínu. AAR: hlutfall safnsvœðis af heildarflatarmáli
jökulsins. Hæð jafnvœgislínu á syðra hveli (*) Langjökuls
er aðgreind frá nyrðra (**) hveli hans.
Figure 2. a. Specific mass balance of Vatnajökull from
1991-1992 to 2000-2001. The winter mass balance
(bw) is defined as the mass of snow accumulated dur-
ing the winter months, the summer balance (bs) is the
mass balance during the summer, and the net balance
(bn) is defined as their sum. The specific mass bal-
ance is expressed in terms (m) of the equivalent water
accumulation. b. Specific mass balance of Langjökull
1996-1997 - 2000-2001. - a. Ársafkoma Vatnajök-
uls frá 1991 til 2001. Vetrarafkoma (bw), sumaraf-
koma (bs) og ársafkoma (bn) í metrum vatns á ári. b.
Ársafkoma Langjökuls frá 1996 til 2001.
JÖKULLNo. 51 77