Studies of the processes of fracturing, deformation and iceberg calving in Antarctica : a history of the Mertz Glacier = Etude des processus de fracturation, deformation et v‚àö‚Ñ¢lage d'iceberg en Antarctique : une histoire du glacier Mertz ...

• Main Author: Lescarmontier, LG
• Format: Thesis
• Language: unknown
• Published: University Of Tasmania 2023
• Subjects: East Antarctica; George V Coast; Mertz Glacier; Antarc*; Antarctica; Antarctique*
• Online Access: https://dx.doi.org/10.25959/23205689.v1; https://figshare.utas.edu.au/articles/thesis/Studies_of_the_processes_of_fracturing_deformation_and_iceberg_calving_in_Antarctica_a_history_of_the_Mertz_Glacier_Etude_des_processus_de_fracturation_deformation_et_v_lage_d_iceberg_en_Antarctique_une_histoire_du_glacier_Mertz/23205689/1

This thesis presents a study of the processes of fracturing of an outlet glacier leading to its calving. During the CRAC-ICE program, we studied the evolution of the Mertz outlet glacier, which is located on the George V coast in East Antarctica. Before the calving event of the Mertz glacier, which took place in February 2010 releasing an iceberg of 80 km long by 35 km wide, this glacier was characterized by a floating ice tongue. This ice tongue, separated by a fault which was initiated at the beginning of the 1990s, was 150 km long by 35 km wide. Using a set of in-situ GPS data, satellite images of both high and low resolution and the development of a numerical ocean model (TUGO-Mertz), we have followed the evolution of this glacier and the fate of its iceberg. The first part of this study was to develop a strategy for processing of the GPS data, thereby allowing us to obtain the best possible accuracy for our in-situ data. These data were processed using the GINS software and a processing technique based ...