Jökull - 01.12.1999, Page 71

formation of their relief and the waterflow, we were
able to extend Maizel’s classification (1992) of sand-
ar on the Höfðabrekkujökull forefield. We divided
the third type of sandur as distinguished by Maizel’s
(1992), i.e. outwash plains formed by the normal ac-
tivity of meltwaters, into five subtypes. Apart from
end moraines and sandar, a range of other forms occur
on the Höfðabrekkujökull forefield, generated by ac-
cumulative and transformational activity of the glacier
(ground moraine, drumlinized ground moraine, drum-
lins), and the accumulative and erosional activity of
meltwaters (e.g. kame terraces, erosional meltwater
plains). We also identified kettles, nival forms and
denudational forms.
Moreover, geomorphological mapping allowed
three distinct geomorphological landscapes to be dis-
tinguished on the Höfðabrekkujökull forefield. In
the northern part of the area, at the point of con-
tact between Höfðabrekkujökull and the neighbouring
glacier to the north, a highly varied structural-glacial
landscape is predominant. To the south of it, glacial
and fluvioglacial forms of different heights are pre-
dominant in the landscape of the forefield. The re-
maining part of the forefield of the analysed glacier
is covered by a relatively flat fluvioglacial landscape
with remains of end moraines and sheets of ground
moraine.
ACKNOWLEDGEMENTS
The authors would like to thank the former director
of Landmælingar íslands, Mr. Ágúst Guðmundsson,
joint co-ordinator of the ESA-Project, for his whole-
hearted help during our scientific stays in Iceland dur-
ing 1995-1997. We would also particularly like to
thank Professors Helgi Björnsson and Páll Einarsson
from the Science Institute of the University of Iceland
for scientific discussions, making literature available
to us and providing organizational help. We are also
grateful to Mr. Reynir Ragnarsson, a policeman and
pilot from Vík í Mýrdal, for his permission to use the
refuge near Hafursey as our base during the three field
seasons. Our participation in the international ESA-
Project: ERS AO. 2D116 Monitoring of Natural Land
Surface Changes in Iceland Using ERS-l/ERS-2 and
Other Remote Sensing Systems, was initiated by Dr.
Ulrich Miinzer from the University of Munich, the
main co-ordinator of this programme. We now have
the opportunity to thank him sincerely for that invi-
tation. Thank you very much Bryndís Brandsdóttir
for all initiatives and helpfulness during preparation
of this paper to print.
ÁGRIP
Gert hefur verið landmótunarkort af Mýrdalssandi við
jaðar Höfðabrekkujökuls. Kortið er byggt á feltvinnu
höfunda sumrin 1995, 1996 og 1997. Margvísleg-
ar jöklasets- og ársetsmyndanir einkenna ofanverðan
Mýrdalssand. Á sandinum má sjá nokkrar kynslóðir
jökulgarða, sem marka framrás jökulsins frá lokum
síðustu ísaldar. Leifar elstu jökulgarðanna, sem taldir
eru vera frá kuldaskeiði í lok síðustu ísaldar eða
snemma á nútíma, má sjá við Selfjall og Rjúpnafell.
Yngri garðarnir eru frá því um síðustu aldamót, frá
miðri þessarri öld, en þeir yngstu og minnstu mynd-
uðust árið 1992.
REFERENCES
Bjömsson, H. 1979. Glaciers in Iceland, Jökull, 29, 74-80.
Geirsdóttir, Á., J. Harðardóttir and J. Eiríksson 1997. The
depositional history of the Younger Dryas-Preboreal
Búði moraines in South-Central Iceland. Arctic and
Alpine Research, 29, 13-23.
Grove, J. M. 1988. The Little Ice Age. Methuen, London,
1-63.
Heim, D. 1983. Glaziare Entwasserung und Sanderbildung
am Kötlujökull, Síidisland. Polarforschung, 53, 17-29.
Hjartarson, Á. 1991. A revised model of Weichselian degla-
ciation in south and southwest Iceland. Environmental
Change in Iceland: Past and Present, eds. J. Maizels and
C. Caseldine, Glaciology and Quaternary Geology, 7,
67-77.
Hjartarson, Á. and Ó. Ingólfsson 1988. Preboreal glaciation
of Southern Iceland. Jökull, 38, 1-16.
Ingólfsson, Ó. 1991. A review of the Late Weichselian
and early Holocene glacial and environmental history
of Iceland. Environmental Change in Iceland: Past and
Present, eds. J. Maizels and C. Caseldine, Glaciology
and Quaternary Geology, 7, 13-29.
Jóhannesson, H. 1985. Um endasleppu hraunin undir Eyja-
fjöllum og jökla síðasta jökulskeiðs, Jökull, 35, 83-95.
Kaldal, I. and S. Víkingsson 1990. Early Holocene degla-
ciation in Central Iceland, Jökull, 40, 51-66.
JÖKULL, No. 47 69