Jökull - 01.10.1998, Blaðsíða 15

margin. The glacier calves into a proglacial lagoon,
Fjallsárlón.
Breiðamerkurjökull is a large outlet glacier which
is composed of three ice streams, designated westem-,
central- and eastern branch (Björnsson and others,
1992; Bjömsson, 1996). The branches are separated
by two distinct medial moraines. The glacier has been
monitored at up to 7 locations by local farmers since
1932. The western branch, which calves into a
proglacial lagoon, Breiðárlón, is divided into two parts
by a medial moraine. The westemmost part originates
in the summit caldera of Öræfajökull. The eastern
branch calves into a tidal lagoon, Jökulsárlón, which
has a maximum depth of approximately 200 m. Surge
activity in the eastern branch has been described in
historical accounts from the 18th and 19th centuries
and during the first decades of the 20th century (Páls-
son, 1945; Thienemann, 1824; Björnsson, 1996; F.
Bjömsson, this volume). Small scale surge activity has
also been recorded in the central branch and in the
westem branch.
Fellsárjökull is not a part of the Vatnajökull ice
cap since it is only connected to the main ice cap by
fim fields across a water divide. It was monitored by a
local farmer.
Brókarjökull was monitored by local farmers until
1: Morsárjökull, staöur 1, Vatnajökli
2: Skaftafellsjökull, staður 2, Vatnajökli
3: Skaftafellsjökull, staður 3, Vatnajökli
4: Svínafellsjökull, staður 2, Öræfajökli
5: Svínafellsjökull, staður4, Öræfajökli
6: Virkisjökull, Öræfajökli
7: Falljökull, Öræfajökli
------- 8: Gljúfursárjökull, Öræfajökli
------- 9: Stigárjökull, Öræfajökli
------10: Hólárjökull, Öræfajökli
-------11: Kvíárjökull, Öræfajökli
12: Hrútárjökull, Öræfajökli
------- 13: Fjallsjökull, Fitjar, Öræfajökli
-------14: Fjallsjökull, Gamlasel, Öræfajökli
Fig. 9. Glacier variations of south flowing outlet glaciers from Vatnajökull (and Öræfajökull) between Skeiðarárjökull and
Breiðamerkurjökull.
—Jöklabreytingar, suðurhluti Vatnajökuls (og Öræfajökull) milli Skeiðarárjökuls and' Breiðamerkurjökuls.
JÖKULL, No. 45,1998
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