Jökull


Jökull - 01.12.1984, Side 67

Jökull - 01.12.1984, Side 67
Hammer, C.U., H.B. Claasen, W. Dansgaard, N. Gundestrup, S.J. Johnsen and N. Reeh 1978: Dating of Greenland ice cores by flow models, isotopes, volcanic debris, and con- tinental dust. J. Glaciol. 20, No. 82: 3—26. Hammer, C.U., H.B. Clausen and W. Dansgaard 1980a: Greenland ice sheet evidence of post- glacial volcanism and its climatic impact. Nature, 288: 230—235. Hammer, C.U. 1980b: Acidity of polar ice cores in relation to absolute dating, past volcanism, and radio-echoes. J. Glaciol. 25, No. 93: 359-372. Hammer, C.U., H.B. ClausetiandW. Dansgaard 1981: Past volcanism and climate revealed by Greenland ice cores. J. Volcanol. and Geo- thermal Res. 11: 3—10. Herron, M.M. (personal communication, 1981). Herron, M.M. 1982: Impurity sources of F“, CP, N03_ and S042- in Greenland and Antarctic precipitation. J. Geophys. Res. 87: 3052- 3060. Johnsen, S.J. 1977: Stable isotope homogeniza- tion of polar firn and ice. Isotopes and impuri- ties in snow and ice. Proceedings of the Grenoble Symposium Aug./Sept. 1975, p. 210-19. (IAHS-AISH Publication No. 118). Junge, C.E. 1963: Air Chemistry and Radioacti- vity. Academic Press, New York and London. 118 pp and 68 pp. Kyle, P.R. and P.A. Jezek 1978: Compositions of three tephra layers from the Byrd Station ice core, Antarctica. J. Volcanol. and Geother- mal Res. 4: 225—232. Larsen, G. and S. Thorarinsson 1977: H4 and other acid Hekla tephra layers, Jökull 27: 28— 46. Tauber, H. (personal communication, 1983) Thorarinsson, S. (personal communication, 1977: 1979) Thorarinsson, S. 1956: The thousand years strug- gle against ice and fire. From two lectures delivered in 1952 at Bedford College, London University. Publishing Department of the Cultural Fund, Reykjavík. Thorarinsson, S. 1969: The Lakagígar Eruption of 1783. Bull. Volcanol. Tome XXXIII-3: 910-929. Thorarinsson, S. 1981a: Greetings from Iceland. Ash-falls and volcanic aerosols in Scandina- via. Geogr. Ann. 63A: 109—118. Thorarinsson, S. 1981b: The application of tephrochronology in Iceland. In: S. Self and R.S.J. Sparks (Eds.). Tephra Studies. Pro- ceedings of the NATO Advanced Study Insti- tute “Tephra Studies as a tool in Quaternary Research”, Reidel Publ. Co., Dordrecht. p. 109-134. Wilson, C.J.N., N.N. Ambroseys, J. Bradley and G.P.L. Walker 1980: A new date for the Taupo eruption, New Zealand. Nature 288: 252-253. Ágrip SPOR EFTIR ÍSLENSK ELDGOS í GRÆNLANDSJÖKLI C. U. Hammer Kaupmannahafnarháskóla Eldgos á íslandi koma fram í ískjörnum frá Grænlandsjökli sem toppar í sýrumagni (H+ jón- um). Súr úrkoma hefur fallið á jökulinn en aska hefur ekki náð að berast frá eldgosunum og sést því ekki í ískjörnunum. Sýnd eru merki um gosin í Lakagígum 1783 (4. mynd)., Kötlu 1179 (6. mynd), Heklu 1104 (7. mynd) og Eldgjá 934 (5. mynd), og rætt um gosin Heklu III (fyrir um 3000 árum), Heklu IV (fyrir um 4600 árum) og Heklu V (fyrir um 7400 árum). Greinin er tileinkuð minningu Sigurðar Þórar- inssonar, brautryðjandans í öskulagarannsókn- um. JÖKULL 34. ÁR 65
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