Jökull


Jökull - 31.12.2001, Page 79

Jökull - 31.12.2001, Page 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
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Jökull

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