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Slupetzky, Heinz; Ehgartner, Gerhard; Zagel, Bernhard (2014): Glacier mass balances of Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1958/1959 et seq [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.829950

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Abstract:
Stubacher Sonnblickkees (SSK) is located in the Hohe Tauern Range (Eastern Alps) in the south of Salzburg Province (Austria) in the region of Oberpinzgau in the upper Stubach Valley. The glacier is situated at the main Alpine crest and faces east, starting at elevations close to 3050 m and in the 1980s terminated at 2500 m a.s.l. It had an area of 1.7 km² at that time, compared with 1 km² in 2013. The glacier type can be classified as a slope glacier, i.e. the relief is covered by a relatively thin ice sheet and there is no regular glacier tongue. The rough subglacial topography makes for a complex shape in the surface topography, with various concave and convex patterns.
The main reason for selecting this glacier for mass balance observations (as early as 1963) was to verify on a complex glacier how the mass balance methods and the conclusions - derived during the more or less pioneer phase of glaciological investigations in the 1950s and 1960s - could be applied to the SSK glacier. The decision was influenced by the fact that close to the SSK there was the Rudolfshütte, a hostel of the Austrian Alpine Club (OeAV), newly constructed in the 1950s to replace the old hut dating from 1874. The new Alpenhotel Rudolfshütte, which was run by the Slupetzky family from 1958 to 1970, was the base station for the long-term observation; the cable car to Rudolfshütte, operated by the Austrian Federal Railways (ÖBB), was a logistic advantage. Another factor for choosing SSK as a glaciological research site was the availability of discharge records of the catchment area from the Austrian Federal Railways who had turned the nearby lake Weißsee ('White Lake') - a former natural lake – into a reservoir for their hydroelectric power plants. In terms of regional climatic differences between the Central Alps in Tyrol and those of the Hohe Tauern, the latter experienced significantly higher precipitation , so one could expect new insights in the different response of the two glaciers SSK and Hintereisferner (Ötztal Alps) - where a mass balance series went back to 1952. In 1966 another mass balance series with an additional focus on runoff recordings was initiated at Vernagtfener, near Hintereisferner, by the Commission of the Bavarian Academy of Sciences in Munich.
The usual and necessary link to climate and climate change was given by a newly founded weather station (by Heinz and Werner Slupetzky) at the Rudolfshütte in 1961, which ran until 1967. Along with an extension and enlargement to the so-called Alpine Center Rudolfshütte of the OeAV, a climate observatory (suggested by Heinz Slupetzky) has been operating without interruption since 1980 under the responsibility of ZAMG and the Hydrological Service of Salzburg, providing long-term met observations. The weather station is supported by the Berghotel Rudolfshütte (in 2004 the OeAV sold the hotel to a private owner) with accommodation and facilities.
Direct yearly mass balance measurements were started in 1963, first for 3 years as part of a thesis project. In 1965 the project was incorporated into the Austrian glacier measurement sites within the International Hydrological Decade (IHD) 1965 – 1974 and was afterwards extended via the International Hydrological Program (IHP) 1975 – 1981. During both periods the main financial support came from the Hydrological Survey of Austria. After 1981 funds were provided by the Hydrological Service of the Federal Government of Salzburg. The research was conducted from 1965 onwards by Heinz Slupetzky from the (former) Department of Geography of the University of Salzburg. These activities received better recognition when the High Alpine Research Station of the University of Salzburg was founded in 1982 and brought in additional funding from the University. With recent changes concerning Rudolfshütte, however, it became unfeasible to keep the research station going. Fortunately, at least the weather station at Rudolfshütte is still operating.
In the pioneer years of the mass balance recordings at SSK, the main goal was to understand the influence of the complicated topography on the ablation and accumulation processes. With frequent strong southerly winds (foehn) on the one hand, and precipitation coming in with storms from the north to northwest, the snow drift is an important factor on the undulating glacier surface. This results in less snow cover in convex zones and in more or a maximum accumulation in concave or flat areas. As a consequence of the accentuated topography, certain characteristic ablation and accumulation patterns can be observed during the summer season every year, which have been regularly observed for many decades . The process of snow depletion (Ausaperung) runs through a series of stages (described by the AAR) every year. The sequence of stages until the end of the ablation season depends on the weather conditions in a balance year. One needs a strong negative mass balance year at the beginning of glacier measurements to find out the regularities; 1965, the second year of observation resulted in a very positive mass balance with very little ablation but heavy accumulation. To date it is the year with the absolute maximum positive balance in the entire mass balance series since 1959, probably since 1950.
The highly complex ablation patterns required a high number of ablation stakes at the beginning of the research and it took several years to develop a clearer idea of the necessary density of measurement points to ensure high accuracy. A great number of snow pits and probing profiles (and additional measurements at crevasses) were necessary to map the accumulation area/patterns. Mapping the snow depletion, especially at the end of the ablation season, which coincides with the equilibrium line, is one of the main basic data for drawing contour lines of mass balance and to calculate the total mass balance (on a regular-shaped valley glacier there might be an equilibrium line following a contour line of elevation separating the accumulation area and the ablation area, but not at SSK). – An example: in 1969/70, 54 ablation stakes and 22 snow pits were used on the 1.77 km² glacier surface. In the course of the study the consistency of the accumulation and ablation patterns could be used to reduce the number of measurement points. - At the SSK the stratigraphic system, i.e. the natural balance year, is used instead the usual hydrological year.
From 1964 to 1981, the yearly mass balance was calculated by direct measurements. Based on these records of 17 years, a regression analysis between the specific net mass balance and the ratio of ablation area to total area (AAR) has been used since then. The basic requirement was mapping the maximum snow depletion at the end of each balance year. There was the advantage of Heinz Slupetzky's detailed local and long-term experience, which ensured homogeneity of the series on individual influences of the mass balance calculations. Verifications took place as often as possible by means of independent geodetic methods, i.e. monoplotting , aerial and terrestrial photogrammetry, more recently also the application of PHOTOMODELLER and laser scans. The semi-direct mass balance determinations used at SSK were tentatively compared with data from periods of mass/volume change, resulting in promising first results on the reliability of the method. In recent years re-analyses of the mass balance series have been conducted by the World Glacier Monitoring Service and will be done at SSK too. – The methods developed at SSK also add to another objective, much discussed in the 1960s within the community, namely to achieve time- and labour-saving methods to ensure continuation of long-term mass balance series.
The regression relations were used to extrapolate the mass balance series back to 1959, the maximum depletion could be reconstructed by means of photographs for those years. R. Günther (1982) calculated the mass balance series of SSK back to 1950 by analysing the correlation between meteorological data and the mass balance; he found a high statistical relation between measured and determined mass balance figures for SSK.
In spite of the complex glacier topography, interesting empirical experiences were gained from the mass balance data sets, giving a better understanding of the characteristics of the glacier type, mass balance and mass exchange. It turned out that there are distinct relations between the specific net balance, net accumulation (defined as Bc/S) and net ablation (Ba/S) to the AAR, resulting in characteristic so-called 'turnover curves'. The diagram of SSK represents the type of a glacier without a glacier tongue. Between 1964 and 1966, a basic method was developed, starting from the idea that instead of measuring years to cover the range between extreme positive and extreme negative yearly balances one could record the AAR/snow depletion/Ausaperung during one or two summers. The new method was applied on Cathedral Massif Glacier, a cirque glacier with the same area as the Stubacher Sonnblickkees, in British Columbia, Canada. during the summers of 1977 and 1978. It returned exactly the expected relations, e.g. mass turnover curves, as found on SSK.
The SSK was mapped several times on a scale of 1:5000 to 1:10000. Length variations have been measured since 1960 within the OeAV glacier length measurement programme.
Between 1965 and 1981, there was a mass gain of 10 million cubic metres. With a time lag of 10 years, this resulted in an advance until the mid-1980s. Since 1982 there has been a distinct mass loss of 35 million cubic metres by 2013. In recent years, the glacier has disintegrated faster, forced by the formation of a periglacial lake at the glacier terminus and also by the outcrops of rocks (typical for the slope glacier type), which have accelerated the meltdown. The formation of this lake is well documented. The glacier has retreated by some 600 m since 1981. - Since August 2002, a runoff gauge installed by the Hydrographical Service of Salzburg has recorded the discharge of the main part of SSK at the outlet of the new Unterer Eisboden See.
The annual reports – submitted from 1982 on as a contractual obligation to the Hydrological Service of Salzburg – document the ongoing processes on the one hand, and emphasize the mass balance of SSK and outline the climatological reasons, mainly based on the met-data of the observatory Rudolfshütte, on the other. There is an additional focus on estimating the annual water balance in the catchment area of the lake. There are certain preconditions for the water balance equation in the area. Runoff is recorded by the ÖBB power stations, the mass balance of the now approx. 20% glaciated area (mainly the Sonnblickkees) is measured andthe change of the snow and firn patches/the water content is estimated as well as possible. (Nowadays laserscanning and ground radar are available to measure the snow pack). There is a net of three precipitation gauges plus the recordings at Rudolfshütte. The evaporation is of minor importance. The long-term annual mean runoff depth in the catchment area is around 3.000 mm/year.
The precipitation gauges have measured deficits between 10% and 35%, on average probably 25% to 30%. That means that the real precipitation in the catchment area Weißsee (at elevations between 2,250 and 3,000 m) is in an order of 3,200 to 3,400 mm a year. The mass balance record of SSK was the first one established in the Hohe Tauern region (and now since the Hohe Tauern National Park was founded in 1983 in Salzburg) and is one of the longest measurement series worldwide. Great efforts are under way to continue the series, to safeguard against interruption and to guarantee a long-term monitoring of the mass balance and volume change of SSK (until the glacier is completely gone, which seems to be realistic in the near future as a result of the ongoing global warming).
Heinz Slupetzky, March 2014
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Addendum 2021-04-22:
Today, the research site is coordinated by the Hydrographic Survey of Salzburg and the Department of Geoinformatics - Z_GIS at the University of Salzburg (PLUS).
The conducted long term research is integrated to global networks and monitoring systems such as LTER (LTER Site Oberes Stubachtal). Such long term ecosystem research is a main part of global efforts in understand ecosystems better and in ensuring a sustainable livelihood. All activities are in accordance with the climate and energy stategy Salzburg 2050.
Keyword(s):
Glaciers Austria
Coverage:
Latitude: 47.131940 * Longitude: 12.587220
Date/Time Start: 1958-09-23T00:00:00 * Date/Time End: 2019-09-24T00:00:00
Comment:
The data series is continued annually.
Change history:
2021-04-22T13:16:50 – Years 2013/2014 to 2019/2020 added
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
62 datasets

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Datasets listed in this publication series

  1. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1958/1959. https://doi.org/10.1594/PANGAEA.829893
  2. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1959/1960. https://doi.org/10.1594/PANGAEA.829895
  3. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1960/1961. https://doi.org/10.1594/PANGAEA.829896
  4. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1961/1962. https://doi.org/10.1594/PANGAEA.829897
  5. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1962/1963. https://doi.org/10.1594/PANGAEA.829898
  6. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1963/1964. https://doi.org/10.1594/PANGAEA.829899
  7. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1964/1965. https://doi.org/10.1594/PANGAEA.829900
  8. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1965/1966. https://doi.org/10.1594/PANGAEA.829901
  9. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1966/1967. https://doi.org/10.1594/PANGAEA.829902
  10. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1967/1968. https://doi.org/10.1594/PANGAEA.829903
  11. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1968/1969. https://doi.org/10.1594/PANGAEA.829904
  12. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1969/1970. https://doi.org/10.1594/PANGAEA.829905
  13. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1970/1971. https://doi.org/10.1594/PANGAEA.829906
  14. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1971/1972. https://doi.org/10.1594/PANGAEA.829907
  15. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1972/1973. https://doi.org/10.1594/PANGAEA.829908
  16. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1973/1974. https://doi.org/10.1594/PANGAEA.829909
  17. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1974/1975. https://doi.org/10.1594/PANGAEA.829910
  18. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1975/1976. https://doi.org/10.1594/PANGAEA.829911
  19. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1976/1977. https://doi.org/10.1594/PANGAEA.829912
  20. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1977/1978. https://doi.org/10.1594/PANGAEA.829913
  21. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1978/1979. https://doi.org/10.1594/PANGAEA.829914
  22. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1979/1980. https://doi.org/10.1594/PANGAEA.829915
  23. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1980/1981. https://doi.org/10.1594/PANGAEA.829916
  24. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1981/1983. https://doi.org/10.1594/PANGAEA.829917
  25. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1982/1983. https://doi.org/10.1594/PANGAEA.829918
  26. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1983/1984. https://doi.org/10.1594/PANGAEA.829919
  27. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1984/1985. https://doi.org/10.1594/PANGAEA.829920
  28. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1985/1986. https://doi.org/10.1594/PANGAEA.829921
  29. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1986/1987. https://doi.org/10.1594/PANGAEA.829922
  30. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1987/1988. https://doi.org/10.1594/PANGAEA.829923
  31. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1988/1989. https://doi.org/10.1594/PANGAEA.829924
  32. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1989/1990. https://doi.org/10.1594/PANGAEA.829925
  33. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1990/1991. https://doi.org/10.1594/PANGAEA.829926
  34. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1991/1992. https://doi.org/10.1594/PANGAEA.829927
  35. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1992/1993. https://doi.org/10.1594/PANGAEA.829928
  36. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1993/1994. https://doi.org/10.1594/PANGAEA.829929
  37. Slupetzky, H (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1994/1995. https://doi.org/10.1594/PANGAEA.829930
  38. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1995/1996. https://doi.org/10.1594/PANGAEA.829931
  39. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1996/1997. https://doi.org/10.1594/PANGAEA.829932
  40. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1997/1998. https://doi.org/10.1594/PANGAEA.829933
  41. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1998/1999. https://doi.org/10.1594/PANGAEA.829934
  42. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 1999/2000. https://doi.org/10.1594/PANGAEA.829935
  43. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2000/2001. https://doi.org/10.1594/PANGAEA.829936
  44. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2001/2002. https://doi.org/10.1594/PANGAEA.829937
  45. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2002/2003. https://doi.org/10.1594/PANGAEA.829938
  46. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2003/2004. https://doi.org/10.1594/PANGAEA.829939
  47. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2004/2005. https://doi.org/10.1594/PANGAEA.829940
  48. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2005/2006. https://doi.org/10.1594/PANGAEA.829941
  49. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2006/2007. https://doi.org/10.1594/PANGAEA.829942
  50. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2007/2008. https://doi.org/10.1594/PANGAEA.829943
  51. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2008/2009. https://doi.org/10.1594/PANGAEA.829944
  52. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2009/2010. https://doi.org/10.1594/PANGAEA.829945
  53. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2010/2011. https://doi.org/10.1594/PANGAEA.829946
  54. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2011/2012. https://doi.org/10.1594/PANGAEA.835333
  55. Slupetzky, H; Ehgartner, G (2014): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2012/2013. https://doi.org/10.1594/PANGAEA.836662
  56. Zagel, B; Slupetzky, H; Ehgartner, G (2021): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2013/2014. https://doi.pangaea.de/10.1594/PANGAEA.930700
  57. Zagel, B; Slupetzky, H; Ehgartner, G (2021): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2014/2015. https://doi.pangaea.de/10.1594/PANGAEA.930708
  58. Zagel, B; Slupetzky, H; Ehgartner, G (2021): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2015/2016. https://doi.pangaea.de/10.1594/PANGAEA.930702
  59. Zagel, B; Slupetzky, H; Ehgartner, G (2021): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2016/2017. https://doi.pangaea.de/10.1594/PANGAEA.930709
  60. Zagel, B; Slupetzky, H; Ehgartner, G (2021): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2017-2018. https://doi.pangaea.de/10.1594/PANGAEA.930710
  61. Zagel, B; Slupetzky, H; Ehgartner, G (2021): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2018/2019. https://doi.pangaea.de/10.1594/PANGAEA.930705
  62. Zagel, B; Slupetzky, H; Ehgartner, G (2021): Glacier mass balance Stubacher Sonnblickkees, Hohe Tauern Range, Eastern Alps, Austria, 2019/2020. https://doi.pangaea.de/10.1594/PANGAEA.930706