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Methodology for parametric geocoding and upgrading glacier interferometric / elevation models with altimetry data

Precise geocoding of spaceborne interferometric models and straightforward production of semi-controlled interferometric mosaics without surveyed ground control points. Serious height mistakes in available topographic maps were revealed over the largest European ice caps. Rapid negative changes of glacier elevations were detected and mapped in the Hornbreen-Hambergbreen ice bridge area, south Svalbard. The rate of changes is twice of that detected over neighboring glaciers, which indicates the presence of subglacial strait beneath the ice bridge.

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