Evolution of ice shelves in North Greenland during the last 30 years ...

• Main Authors: Romain, Millan, Anders, Bjørk, Jeremie, Mouginot, Mike, Wood, Signe, Larsen, Nicolas, Jourdain, Pierre, Mathiot
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Greenland; Antarc*; Antarctica; Ice Shelves; North Greenland
• Online Access: https://dx.doi.org/10.57757/iugg23-0085; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017007

<!--!introduction!--> In north Greenland, which holds more than 2.7 m of sea level equivalent, the ice flows through ice shelves, as in Antarctica. These floating platforms are the most vulnerable parts of the ice sheets as the advection of warm, salty ocean waters increases basal melting, which can trigger an increase in ice flow into the ocean. Here we study the recent dynamic and geometric changes of all present and former ice shelves along the north coast of Greenland. We document the evolution of the surface elevation using data from the GIMP project, from NASA's instruments (ICESat-1/2, ATM, LVIS, GLISTIN-A) and generate DEMs using ASTER imagery between 2000-present. We also monitor changes in surface ice velocity and grounding zone evolution using a combination of optical and radar data. We use the elevation time series to monitor the temporal evolution of the ice shelves volumes and combine them with the surface flow velocity to calculate basal melt rates in a Lagrangian framework at ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...