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Progress in Physical Geography
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Advances in interferometric synthetic aperture radar (InSAR) in earth system science

Helmut Rott

Institute of Meteorology and Geophysics, University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria, helmut.rott{at}uibk.ac.at

During recent years, synthetic aperture radar (SAR) interferometry (InSAR) has become an important tool for precise measurements of the earth’s surface topography and deformation. This paper presents an overview on recent developments in InSAR applications, with emphasis on the use of satellite-borne sensors for applications in geoscience, topographic mapping, natural hazard monitoring and environmental research. InSAR measurement principles are briefly introduced. Recent results on the use of repeat-pass interferometry for mapping seismic and volcanic deformation, monitoring landslides and subsidence, and mapping glacier motion are described. Other InSAR applications introduced in the paper are: topographic mapping, retrieval of biogeophysical parameters on land surfaces, and measurements of water currents. Examples of interferometric products are shown for satellite-borne SAR systems operating at X-band, C-band and L-band radar frequencies. An outlook is provided on upcoming SAR systems which will spur further advances in InSAR techniques and applications.

Key Words: ice motion • interferometry • radar • satellite • surface deformation • topography.

This version was published on December 1, 2009

Progress in Physical Geography, Vol. 33, No. 6, 769-791 (2009)
DOI: 10.1177/0309133309350263
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