Abstract
The panoramic cameras (PC) onboard Hexagon KH-9 satellite missions from 1971–1984 captured very-high resolution stereo imagery with up to 60 cm spatial resolution. This study explores the potential of this imagery for glacier mapping and change estimation. We assess KH-9PC imagery using data from KH-9 Mapping Camera (MC), KH-4PC as well as SPOT and Pleiades satellites. The high resolution of KH-9PC leads to higher quality DEMs, which better resolve the accumulation region of the glaciers in comparison to the KH-9MC. On stable terrain, KH-9PC DEMs achieve an elevation accuracy <4 m with respect to SPOT and Pleiades DEMs. While the estimated geodetic mass balance using PC and MC data are similar, the elevation change data show superior spatial coverage and considerably less noise.
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