| HAL : hal-00164209, version 1 |
| Fiche détaillée | Récupérer au format |
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| International Geoscience And Remote Sensing Symposium, Anchorage : États-Unis (2004) |
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| Velocities Field of Mountain Glacier Obtained by Synthetic Aperture Radar Interferometry |
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| Laurent Bousquet 1Michel Gay 1, 2 |
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| MEGATOR Collaboration(s) |
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| (26/07/2004) |
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| The Mer de Glace and Argentière glaciers are located in the Mont Blanc region, French Alps. They are temperate glaciers and their velocity flow is about one hundred meters a year (~270 mm a day). This paper presents a use of Synthetic-Aperture Radar (SAR) interferogram obtained from the two European Remote-Sensing satellites (ERS1-2) to measure the motion of Mer de Glace and Argentière glaciers. We investigate whether the interferometric data are quantitatively consistent with terrestrial velocity measurements along two transverse profiles and two longitudinal profiles. Interferometric and terrestrial velocity are in agreement if a (terrestrially measured) surface-normal velocity component is properly accounted for. This suggest that both the interferometric velocities and the conversions of terrestrial data to the winter period are reliable. Finally we show that the application of repeat-pass SAR interferometry to the glaciers enable precise mapping of ice flow dynamics at a much higher level than usually obtained. |
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| 1 : | Erosion torrentielle neige et avalanches (UR ETGR) |
| CEMAGREF | |
| 2 : | Laboratoire des images et des signaux (LIS) |
| CNRS : UMR5083 – Institut National Polytechnique de Grenoble (INPG) – Université Joseph Fourier - Grenoble I | |
| 3 : | Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) |
| CNRS : UMR5566 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III | |
| 4 : | Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance (LISTIC) |
| Université de Savoie : EA3703 | |
| 5 : | Laboratoire d'Analyse et Traitement d'Images (LAPI) |
| Université "Politehnica" de Bucarest | |
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| Domaine | : | Informatique/Traitement des images Sciences de l'ingénieur/Traitement du signal et de l'image Planète et Univers/Sciences de la Terre/Glaciologie Informatique/Traitement du signal et de l'image |
| hal-00164209, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00164209 | |
| oai:hal.archives-ouvertes.fr:hal-00164209 | |
| Contributeur : Gabriel Vasile | |
| Soumis le : Jeudi 19 Juillet 2007, 16:23:45 | |
| Dernière modification le : Mardi 23 Octobre 2007, 15:09:37 | |