TY - JOUR
T1 - Monitoring Temperate Glacier Displacement by Multi-Temporal TerraSAR-X Images and Continuous GPS Measurements
AU - Fallourd, Renaud
AU - Trouvé, Emmanuel
AU - Roşu, Diana
AU - Vernier, Flavien
AU - Bolon, Philippe
AU - Harant, Olivier
AU - Gay, Michel
AU - Bombrun, Lionel
AU - Vasile, Gabriel
AU - Nicolas, Jean Marie
AU - Tupin, Florence
AU - Walpersdorf, Andrea
AU - Cotte, Nathalie
AU - Mugnier, Jean Louis
AU - Serafini, Jonathan
AU - Moreau, Luc
PY - 2011/1/1
Y1 - 2011/1/1
N2 - A new generation of space-borne SAR sensors were launched in 2006–2007 with ALOS, TerraSAR-X, COSMO-Sky-Med and RadarSat-2 satellites. The data available in different bands (L, C and X bands), with High Resolution (HR) or multi-polarization modes offer new possibilities to monitor glacier displacement and surface evolution by SAR remote sensing. In this paper, the first results obtained with TerraSAR-X HR SAR image time series acquired over the temperate glaciers of the Chamonix Mont-Blanc test site are presented. This area involves well-known temperate glaciers which have been monitored and instrumented i.e. stakes for annual displacement/ablation, GPS for surface displacement and cavitometer for basal displacement, for more than 50 years. The potential of 11-day repeated X-band HR SAR data for Alpine glacier monitoring is investigated by a combined use of in situ measurements and multi-temporal images. Interpretations of HR images, analysis of interferometric pairs and performance assessments of target/texture tracking methods for glacier motion estimation are presented. The results obtained with four time series covering the Chamonix Mont-Blanc glaciers over one year show that the phase information is rarely preserved after 11 days on such glaciers, whereas the high resolution intensity information allows the main glacier features to be observed and displacement fields on the textured areas to be derived.
AB - A new generation of space-borne SAR sensors were launched in 2006–2007 with ALOS, TerraSAR-X, COSMO-Sky-Med and RadarSat-2 satellites. The data available in different bands (L, C and X bands), with High Resolution (HR) or multi-polarization modes offer new possibilities to monitor glacier displacement and surface evolution by SAR remote sensing. In this paper, the first results obtained with TerraSAR-X HR SAR image time series acquired over the temperate glaciers of the Chamonix Mont-Blanc test site are presented. This area involves well-known temperate glaciers which have been monitored and instrumented i.e. stakes for annual displacement/ablation, GPS for surface displacement and cavitometer for basal displacement, for more than 50 years. The potential of 11-day repeated X-band HR SAR data for Alpine glacier monitoring is investigated by a combined use of in situ measurements and multi-temporal images. Interpretations of HR images, analysis of interferometric pairs and performance assessments of target/texture tracking methods for glacier motion estimation are presented. The results obtained with four time series covering the Chamonix Mont-Blanc glaciers over one year show that the phase information is rarely preserved after 11 days on such glaciers, whereas the high resolution intensity information allows the main glacier features to be observed and displacement fields on the textured areas to be derived.
KW - Corner reflector (CR)
KW - high resolution (HR)
KW - motion estimation
KW - offset tracking
KW - synthetic aperture radar (SAR)
KW - temperate glacier
U2 - 10.1109/JSTARS.2010.2096200
DO - 10.1109/JSTARS.2010.2096200
M3 - Article
AN - SCOPUS:80052342027
SN - 1939-1404
VL - 4
SP - 372
EP - 386
JO - IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
JF - IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
IS - 2
ER -