DocumentCode
2103517
Title
Recent elevation and velocity changes of Astrolabe Glacier, Terre Adelie, Antarctica
Author
Ducasse, Etienne ; Berthier, Etienne ; Blumstein, Denis ; Le Meur, Emmanuel ; Gillet-Chaulet, Fabien ; Durand, Gael
Author_Institution
Laboratoire d´Etudes en Géophysique et Océanographie Spatiale (LEGOS) CNRS, Toulouse, France
fYear
2015
fDate
22-24 July 2015
Firstpage
1
Lastpage
4
Abstract
SPOT and Pléiades images acquired since 2002 are used to describe velocity and elevation changes on Astrolabe Glacier, East Antarctica. Multi-temporal pairs of images are used to generate velocity fields by automatically tracking surfaces features. Stereo-pairs are used to create DEMs. Using three DEMs (2003, 2007 and 2013), we describe a surprising surface elevation increase since 2002, that reached a mean rate of 1.8 m/yr between 2003 and 2007. Conversely, the velocity fields did not reveal any major change in velocity so the origin of the strong increase in elevation remains non elucidated
Keywords
Accuracy; Antarctica; Extraterrestrial measurements; Global Positioning System; Ice; Image resolution; Sea surface; Antarctica; DEM; SPOT; outlet glacier; surface mass-balance; velocity;
fLanguage
English
Publisher
ieee
Conference_Titel
Analysis of Multitemporal Remote Sensing Images (Multi-Temp), 2015 8th International Workshop on the
Conference_Location
Annecy, France
Type
conf
DOI
10.1109/Multi-Temp.2015.7245769
Filename
7245769
Link To Document