Multi-date ERS tandem interferogram analysis: application to alpine glaciers
Lionel Bombrun
(1)
,
Ivan Petillot
(2)
,
Gabriel Vasile
(2)
,
Michel Gay
(3, 1)
,
Emmanuel Trouvé
(2)
,
Philippe Bolon
(2)
,
Jean-Marie Nicolas
(4)
,
Tania Landes
(5)
1
GIPSA-SIGMAPHY -
GIPSA - Signal Images Physique
2 LISTIC - Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance
3 GIPSA-Services - GIPSA-Services
4 RSM - Département Réseaux, Sécurité et Multimédia
5 MAP - Modèles et simulation pour l'architecture, l'urbanisme et le paysage
2 LISTIC - Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance
3 GIPSA-Services - GIPSA-Services
4 RSM - Département Réseaux, Sécurité et Multimédia
5 MAP - Modèles et simulation pour l'architecture, l'urbanisme et le paysage
Lionel Bombrun
- Fonction : Auteur
- PersonId : 1189
- IdHAL : lionel-bombrun
- ORCID : 0000-0001-9036-3988
- IdRef : 137837461
Gabriel Vasile
- Fonction : Auteur
- PersonId : 6912
- IdHAL : gabriel-vasile
- ORCID : 0000-0002-6458-3634
- IdRef : 120253240
Michel Gay
- Fonction : Auteur
- PersonId : 18973
- IdHAL : michel-gay
- ORCID : 0000-0003-1748-0955
Emmanuel Trouvé
- Fonction : Auteur
- PersonId : 1358147
- ORCID : 0000-0003-2140-3303
- IdRef : 035526211
Résumé
Temperate glaciers are an indicator of the local effects of global climate change. For economical and security reasons in the surrounding areas, the monitoring of those geophysical objects is being a necessity. SAR data are expected to provide dense measurements of physical parameters which are necessary to detect significant changes and to constrain glacier flow models. In this paper, five descending one-day ERS- 1/2 tandem interferometric data pairs from July 1995 to April 1996 are studied in the Chamonix Mont-Blanc area (French Alps). This multi-temporal interferogram series is used to analyse the coherence levels and fringe patterns over nine glaciers. Moreover, when the coherence is sufficient, Differential SAR Interferometry (D-InSAR) processing are applicable to derive a three-dimensional (3-D) velocity fields. An expert knowledge and a ten years measurements analysis of glacier flow are used to fix the line of sight (LOS) displacement offset. Finally, an analysis of the wrapped phase difference between interferograms is exposed to detect the presence of residual topographic fringes and to characterize the surface flow field evolution.
Format du dépôt | Fichier |
---|---|
Type de dépôt | Communication dans un congrès |
Titre |
en
Multi-date ERS tandem interferogram analysis: application to alpine glaciers
|
Résumé |
en
Temperate glaciers are an indicator of the local effects of global climate change. For economical and security reasons in the surrounding areas, the monitoring of those geophysical objects is being a necessity. SAR data are expected to provide dense measurements of physical parameters which are necessary to detect significant changes and to constrain glacier flow models. In this paper, five descending one-day ERS- 1/2 tandem interferometric data pairs from July 1995 to April 1996 are studied in the Chamonix Mont-Blanc area (French Alps). This multi-temporal interferogram series is used to analyse the coherence levels and fringe patterns over nine glaciers. Moreover, when the coherence is sufficient, Differential SAR Interferometry (D-InSAR) processing are applicable to derive a three-dimensional (3-D) velocity fields. An expert knowledge and a ten years measurements analysis of glacier flow are used to fix the line of sight (LOS) displacement offset. Finally, an analysis of the wrapped phase difference between interferograms is exposed to detect the presence of residual topographic fringes and to characterize the surface flow field evolution.
|
Auteur(s) |
Lionel Bombrun
1
, Ivan Petillot
2
, Gabriel Vasile
2
, Michel Gay
3, 1
, Emmanuel Trouvé
2
, Philippe Bolon
2
, Jean-Marie Nicolas
4
, Tania Landes
5
1
GIPSA-SIGMAPHY -
GIPSA - Signal Images Physique
( 388744 )
- GIPSA-lab, 11 rue des Mathématiques, Grenoble Campus BP46, F-38402 SAINT MARTIN D'HERES CEDEX
- France
2
LISTIC -
Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance
( 7118 )
- BP 80439 74944 ANNECY LE VIEUX Cedex
- France
3
GIPSA-Services -
GIPSA-Services
( 408880 )
- GIPSA-lab, 11 rue des Mathématiques, Grenoble Campus BP46, F-38402 SAINT MARTIN D'HERES CEDEX
- France
4
RSM -
Département Réseaux, Sécurité et Multimédia
( 73363 )
- Télécom Bretagne - Campus de rennes - 2 rue de la Chataîgneraie BP 78 35512 Cesson Sévigné Cedex
- France
5
MAP -
Modèles et simulation pour l'architecture, l'urbanisme et le paysage
( 516 )
- France
|
Date fin congrès |
2007-07-20
|
Titre du congrès |
MULTITEMP 2007 - 4th International Workshop on the Analysis of Multitemporal Remote Sensing Images
|
Langue du document |
Anglais
|
Vulgarisation |
Non
|
Actes |
Oui
|
Comité de lecture |
Oui
|
Invité |
Non
|
Audience |
Internationale
|
Date de publication |
2007
|
Page/Identifiant |
1-6
|
Ville |
Leuven
|
Pays |
Belgique
|
Date début congrès |
2007-07-18
|
Domaine(s) |
|
Référence interne |
|
Mots-clés |
ro
climate
|
Origine :
Fichiers produits par l'(les) auteur(s)
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