Die Erfassung der Höhenänderung von Ostalpengletschern in den Zeiträumen 1950-1959-1969

In a continuation of Richard Finsterwalder's work of 1950 eight selected glaciers in the Eastern Alps have been photogrammetrically surveyed and mapped on a scale of 1:10.000 in the years 1959 and 1969 in order to establish a record of glacier variation. From a comparison of isohypses of the 1950, 1959 and 1969 surveys the height changes of the glacier surfaces have been determined for approximately two decades. This yielded an average raise of 0,1 m per year, while an average sinking of glacier surfaces of 0,6 m per year had been found for the period 1920-1950

Map of Cordilleera Real Nord (Illampu)

Glacier maps 1 : 50000 exist of the glaciers around lllampu (6368 m) from surveys in 1928, 1963 and 1975, of the glaciers of IIlimani (6420 m) in 1975 and 1983, respectively. From these maps glacier changes 1928 - 1963 - 1975 - 1983 have been evaluated. Their retreat is smaller than that of corresponding glaciers in the Eastern Alps. The alpine advance that has begun in the sixties was not observed in the Cordillera Real

Gletscherstände des Vernagtferner 1889-1969

The Vernagtferner in the Ötztaler Alps (Tirol) has been mapped after terrestrial-photogrammetric surveying by Sebastian Finsterwalder in 1889, Otto von Gruber in 1912, and Heinrich Schatz in 1938. The new, four-colored map in the scale 1: 10.000 enclosed in this issue was composed from aerial photographs of 1969. It was conceived as topographicaI map with additional geodetic and glaciological content. The methods of survey are explained and the means of cartographic representation are discussed

Record of elevation changes of glaciers in the eastern Alps between 1950-1959-1969

In a continuation of Richard Finsterwalder's work of 1950 eight selected glaciers in the Eastern Alps haye been photogrammetrically surveyed and mapped on a scale of 1: 10,000 in the years 1959 and 1969 in order to establish arecord of glacier variation. From a comparison of isohypses of the 1950, 1959 and 1969 surveys the height changes of the glacier surfaces have been determined for approximately two decades. This yielded an average raise of 0,1 m per year, while an average sinking of glacier surfaces of 0.6 m per year had been found for the period 1920-1950

Zur Höhenänderung von Ostalpengletschern im Zeitraum 1969-1979

Eight selected glaciers in the Eastern Alps with a total area of 52 qkm have been surveyed photogrammetrically in the years 1969 and 1979, to determine the annual height change of the glacier surface by the comparison of the two different surveys. In this period of ten years the glaciers show, except for the Hintereisferner, a positive annual height change. But it is less than the change in the past period from 1959 to 1969. The increase in elevation happens mainly in the lower regions of the glaciers, while the glacier-snow-fields don't show any remarkable height changes. So the glacier advance of the sixties seem to have already reached or crossed its maximum