Surface velocity fields, digital elevation models, ice front positions and grounding line derived from remote sensing data at Dinsmoor-Bombardier-Edgeworth glacier system, Antarctic Peninsula (1992-2014) ...

• Main Authors: Seehaus, Thorsten, Marinsek, Sebastián, Helm, Veit, Skvarca, Pedro, Braun, Matthias Holger
• Format: Dataset
• Language: English
• Published: PANGAEA 2015
• Subjects: Multiple investigations; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarc*; Antarctic; Antarctic Peninsula; Ice Shelf; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.859573; https://doi.pangaea.de/10.1594/PANGAEA.859573

The northern Antarctic Peninsula is one of the fastest changing regions on Earth. The disintegration of the Larsen-A Ice Shelf in 1995 caused tributary glaciers to adjust by speeding up, surface lowering, and overall increased ice-mass discharge. In this study, we investigate the temporal variation of these changes at the Dinsmoor-Bombardier-Edgeworth glacier system by analyzing dense time series from various spaceborne and airborne Earth observation missions. Precollapse ice shelf conditions and subsequent adjustments through 2014 were covered. Our results show a response of the glacier system some months after the breakup, reaching maximum surface velocities at the glacier front of up to 8.8 m/d in 1999 and a subsequent decrease to ~1.5 m/d in 2014. Using a dense time series of interferometrically derived TanDEM-X digital elevation models and photogrammetric data, an exponential function was fitted for the decrease in surface elevation. Elevation changes in areas below 1000 m a.s.l. amounted to at least ... : Supplement to: Seehaus, Thorsten; Marinsek, Sebastián; Helm, Veit; Skvarca, Pedro; Braun, Matthias Holger (2015): Changes in ice dynamics, elevation and mass discharge of Dinsmoor-Bombardier-Edgeworth glacier system, Antarctic Peninsula. Earth and Planetary Science Letters, 427, 125-135 ...