Jökull


Jökull - 01.12.1970, Page 22

Jökull - 01.12.1970, Page 22
1932/33 40/41 50/51 60/61- 1969/70 I 1 Hop I-------1 fíecessi. | j Fromskrið [ H Kyrrítoðo Stotionary a) Hundraðshluti mældra útjökla Vatnajökuls, sem hafa hopað, gengið fram eða staðið i stað árin 1932—1970. b) Fjöldi mældra jökla. c) Meðalgangur þriggja smájökla (Skaftafellsjökull, Svínafellsjökull, Virkisjökull (Falljökull)). d) Meðalhitastig sumarmánaða (maí—sept.) á Fagurhólsmýri. Brotalína sýnir hlaupandi meðal- tal 5 ára. e) Heildarákoma vetrarmánaða (sept.—maí) á Fagurhólsmýri. Brotalína sýnir hlaupandi meðal- tal 5 ára. Fig. 4. a) Percentual frequency of retreating, stationary and advancing fronts of Vatnajökull 1932— 1970. b) Number of obserued glaciers. c) Mean fluctuation of the fronts of three small glaciers. d) Mean air temperalure (May—Sept.) at Fagurshólsmýri. The broken line indicates 5-years moving average. e) Precipitation (September—May) at Fagurhólsmýri. The broken line indicates 5-years moving average. From Eythorsson (1961, 1963, 1964, 1966), Rist (1967, 1968, 1970) and Vedráttan (1924—1970). 20 JÖKULL 20. ÁR

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Jökull

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