Jökull - 01.12.1983, Síða 12

12070), about 600 m of displacement had occurred
(Williams etal., 1974 and 1975).
Area calculations from Landsat images for Ice-
land’s glaciers have been carried out by Williams et
al., (1975), and Bjömsson (1980b). Bjömsson (1980b)
included some unpublished data of Williams, added
his own calculations, compared the results with
Thorarinssson’s previous area calculations (1958),
and showed the percentage decrease in area for each
of the principal glaciers of Iceland. Table 1
summarizes excerpts from the work of many
scientists who have calculated the area of Iceland’s
glaciers from published maps, aerial photographs,
and Landsat images.
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Ahlmann, H.W., 1937: Vatnajökull in relation to
other present day Iceland glaciers. Geografiska
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Bjömsson, H., 1975: Explanation ofjökulhlaups from
Grímsvötn, Vatnajökull, Iceland. Jökull 24: 1-
26.
Bjömsson, H., 1978: Könnun á jöklum med rafsegul-
bylgjum. Náttúrufraedingurinn 47 (3-4): 184-
194. (In Icelandic).
Bjömsson, H., 1980a: Glaciers in Iceland. Jökull 29:
74-80.
Bjömsson, H., 1980b: The surface area ofglaciers in
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data acquired by the Royal Aircraft Establish-
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Survey mode optical correlation of the SAR data
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Michigan.
Iwan, W., 1935: Island. Studien zu einer Landes-
kunde. Berlinger Geographische Arbeiten,
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verlag von J. Englehorns Nachf., Stuttgart, 155
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Munzer, U. and J. Bodechtel, 1980: Digitale Ver-
arbeitung von Landsat-Daten úber Eis-und
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messung und Luftbildwesen 48: 21-28. (In
German)
Norlund, N.E., 1938: Denmark. Photogrammetric
Engineering 4(31): 119-120.
Pálsson, S., 1795 (unpub.): Forsög til en physisk,
geographisk og historisk Beskrivelse over de
islandske Isbjorge i Anledning afen Reise til de
fornemste deraf i Aarene 1792-1794 med 4 Situ-
ations — og Prospect — Tegninger. „Om isbjerge
1792 - 1794”. Landsbókasafn íslands, JS 26 fol.,
Reykjavík, 133 pp. (InDanish).
Rist, S., 1967: Jöklabreytingar 1964/65, 1965/66 og
1966/67. Jökull 17: 321-325. (In Icelandic).
Rist, S., 1974: Jökulhlaupaannáll 1971, 1972 og
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Icelandic).
10 JÖKULL 33. ÁR