Jökull - 01.12.1983, Page 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included some unpublished data of Williams, added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.
REFERENCES
Ahlmann, H.W., 1937: Vatnajökull in relation to
other present day Iceland glaciers. Geografiska
Annaler 19 (3-4): 212-231.
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
Iceland. Jökull 28: 31.
Bodechtel, J., K. Hiller and U. Miinzer, 1979:
Comparison of Seasat and Landsat data of Ice-
land for qualitative geologic applications. In
Proceedings of the Seasat-SAR Processor Work-
shop, Frascati, Italy (10-14 December 1979). pp.
61-67.
Crabtree, R.D., 1976: Changes in the Mýrdalsjökull
ice cap, south Iceland: Possible uses of satellite
imagery. PolarRecord, 18 (112): 73-76.
Eythórsson, J., 1945: Jöklaritid. J. Eythórsson (Ed.)
Ferðabók Sveins Pálssonar. Prentsmiðjan Oddi,
Reykjavík. pp. 423-552. (In Icelandic).
Eythórsson, J., 1949: Variations ofglaciers of Iceland,
1930- 1947. JoumalofGlaciology, 1 (5): 250-252.
Eythórsson, ]., 1951: Jöklamaelingar 1950 og 1951.
Jökull 1: 16. (In Icelandic).
Eythórsson, J., 1963: Variations of Iceland glaciers
1931- 1960. Jökull 13: 31-33.
Ford, J.P., R.G. Blom, M.L. Bryan, M.I. Daily, T.H.
Dixon, C. Elachi, and E.C. Xenos, 1980: Seasat
views North America, the Caribbean, and
Western Europe with imaging radar. California
Institute ofTechnology, Jet Propulsion Labora-
tory, Pasadena, California, JPL Publication 80-
67 (1 November 1980), 141 pp.
Gunnlaugsson, Björn, 1844: Uppdráttr íslands,
gjörðr að íyrirsögn Ólafs Nikolas Ólsens eptir
landmælingum Bjarna Gunnlaugssonar, er
styðjast við Þríhyrningamál og strandamæl-
ingar þær, sem hið Konúngliga Rentukammer
hefir látið gjöra og reiknað hefur Hans Jakob
Scheel. Gefinn út af enu Islenska Bókmentafé-
lagi, Reykjavík og Kaupmannahöfn. 1:480,000.
(In Icelandic).
Hoppe, G., 1982: Jordan frán rymden. In: R. Edberg
(Ed.), Hár ár vi hemma. Bokförlaget Bra Böck-
er, Höganás, pp. 186-201. (In Swedish).
Hunting Geology and Geophysics, Ltd. (undated):
Seasat-1 radar mosaic (o£) Iceland. 1:500,000-
scale mosaic constructed by Hunting Surveys,
Ltd., Borehamwood, Hertfordshire, England,
for the Royal Aircraft Establishment (European
Space Agency — Earthnet), from Seasat SAR
data acquired by the Royal Aircraft Establish-
ment receiving station, Oakhanger, England.
Survey mode optical correlation of the SAR data
by the Environmental Research Institute of
Michigan.
Iwan, W., 1935: Island. Studien zu einer Landes-
kunde. Berlinger Geographische Arbeiten,
Herausgegeben vom Geographischen Institut
der Universitat Berlin, No. 7, Kommissions-
verlag von J. Englehorns Nachf., Stuttgart, 155
pp. (In German).
Munzer, U. and J. Bodechtel, 1980: Digitale Ver-
arbeitung von Landsat-Daten úber Eis-und
Schneegebieten des Vatnajökulls (Island). Bild-
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
1973. Jökull 23: 55-60. (In Icelandic).
Rist, S., 1977: Jöklabreytingar 1964/65 - 1973/74
(lOár), 1974/75og 1975/76. Jökull26:69-74. (In
Icelandic).
10 JÖKULL 33. ÁR