Full-Value Mapping of Glacier Rheology using Repeat Pass Sar Interferograms

Mathematics – Logic

Scientific paper

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Scientific paper

An original phase gradient approach to glacier rheological modelling and mapping from repeat pass SAR interferograms was devised, programmed, tested and validated in different glacier environments. The underlying concept, basic algorithms, processional singularities and the information contents of our value-added interferometric products were analysed and briefly discussed. The technological efficiency and reliability of a new processing chain was proved by experiments on 14 ERS-1/2 spaceborne interferometric models. Several satellite image maps showing glacier dynamics in the Hintereisferner and Svartisen test sites were compiled, edited and printed at 1:50 000 and 1:100 000 scales. Map quality control was performed during special surveys in the field. The average tachometric accuracy of satellite rheological maps was estimated at ± 2.0 cm/day.

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