Jökull


Jökull - 01.01.2017, Page 69

Jökull - 01.01.2017, Page 69
Snævarr Guðmundsson og Helgi Björnsson wards Breiðamerkurjökull and the Öræfajökull strato- volcano. The picture affirms the amazing accuracy of Bruun’s drawing when compared with a photograph he took from Reynivellir at the same time. The retreat of the Breiðamerkurjökull outlet, based on a photograph from the airship Graf Zeppelin towards the the glacier termini on 17 July 1930 and a repeat photograph from July 3rd, 1935, taken by the farmer Helgi Arason from Fagurhólsmýri (Figures 9–11), of the two brothers, Sigurður and Ari Björns- son from farm Kvísker, indicates that the glacier has retreated 0,7–1.0 km from its maximum advance moraines in 1880–1890, east of Jökulsárlón lagoon. Helgi’s photograph was taken near the margin of Breiðamerkurjökull, with a view of Breiðamerkur- fjall, at that time still surrounded by the outlets Fjalls- jökull and Breiðamerkurjökull. In 2015, the location of the image was sought and the task repeated nearly 80 years after Helgi took the photo. Presently (2017) the retreat of this outlet ranges between 6.3–8.2 km. The photos of the glaciers presented have been collected and inspected by the authors. Photographs like these improve current knowledge of the glacier variations in the period between 1904–1945, which very few surveys were made. Amazing changes are reflected in these old photos when compared to recent day perspective of the glaciers. HEIMILDIR Arngrímur Sigurðsson 1994. Það verður flogið. Flugmála- saga Íslands í 75 ár. Skjaldborg hf, Reykjavík, 143 bls. Aron Reynisson og Ólafur Magnússon 2012. Kotárjökull viewed from Slaga. Jökull 62, 110. Ágúst Böðvarsson 1996. Landmælingar og kortagerð Dana á Íslandi. Landmælingar Íslands. AMS 1950. Army Map Service, Corps of Engineer. Land- mælingar Íslands. Website: www.lmi.is. Bruun, D. 1928. Fortidsminder og Nutidshjem paa Is- land (2. útgáfa). København: Gyldendalske boghand- el, Nordisk forlag, 1928. Íslensk þýðing 1987 (Íslenskt þjóðlíf í þúsund ár). Frank Ponzi 2004. Howell’s Iceland. Brennholt Publish- ing, Mosfellsbær, 214 bls. Grossman, D. 2009. Ernst Lehmann. Airships.net. Vef- slóð: http://www.airships.net/airship-people/captain- ernst-lehmann/ Helgi H. Eiríksson 1932. Observations and measurements of some glaciers in Austur-SkaftafeIIssýslur. Vísinda- fjelag Íslendinga Rit 12, Reykjavík. Helgi Björnsson 2009. Jöklar á Íslandi. Bókaútgáfan Opna. Reykjavík, 479 bls. Howell, F. W. W. 1892. The Öræfajökull and its First Ascent. Proc. Royal Geographical Soc. 14, 841–850. Hrafnhildur Hannesdóttir 2014. Variations of southeast Vatnajökull- past, present and future. PhD dissertati- on, Faculty of Earth Sciences, University of Iceland, 197 bls. Jón Eyþórsson (ritstj.) 1937. Austur-Skaftafellssýsla. Árbók Ferðafélags Íslands. Ísafoldarprentsmiðja, Reykjavík. Jón Eyþórsson 1956. Merkifell í Fláajökli. Jökull 6, 34. Minningarorð um Magnús Ólafsson, ljósmyndara (1937, 17. ágúst). Morgunblaðið, bls. 6. Sigurður Þórarinsson 1943. Oscillations of the Iceland glaciers in the last 250 years. Í Hans W:son Ahlman og Sigurður Þórarinsson; Vatnajökull-Scientific results of the Swedish–Icelandic investigations 1936–37–38. Geografiska Annaler (1937–1940) 25 (1–2), 1–54, Stokkhólmur 1943. Snævarr Guðmundsson, Hrafnhildur Hannesdóttir og Helgi Björnsson 2012. Post-Little Ice Age volume loss of Kotárjökull glacier, SE-Iceland, derived from historical photography. Jökull 62, 97–110. Snævarr Guðmundsson, Helgi Björnsson og Finnur Páls- son 2017. Changes of Breiðamerkurjökull glacier, SE- Iceland, from its late nineteenth century maximum to the present. Geogr. Ann. Ser. A Phys. Geogr. 99 (4), 338–352. Sven Þ. Sigurðsson 2004. Jöklar í Hornafirði. Í, Helgi Björnsson, Egill Jónsson og Sveinn Runólfsson (ritstj.), Jöklaveröld, 319–389, Skrudda, Reykjavík. Þorsteinn Guðmundsson 1972, Byggðasaga A-Skafta- fellssýslu II. Bókaútgáfa Guðjóns Ó. Guðjónssonar, Reykjavík, 264 bls. Þorvaldur Thoroddsen 1959. Ferðabók 2. útgáfa. Jón Ey- þórsson bjó til prentunar. Útgefandi Snæbjörn Jónsson & Co., Reykjavík. Zeppelin greifi kom til landsins í gær (18. júlí 1930). Morg- unblaðið, bls. 3. Vefslóð: http://timarit.is/ 64 JÖKULL No. 67, 2017

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