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A High-resolution Bedrock Map for the Antarctic Peninsula : Volume 8, Issue 1 (17/02/2014)

By Huss, M.

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Book Id: WPLBN0004022982
Format Type: PDF Article :
File Size: Pages 35
Reproduction Date: 2015

Title: A High-resolution Bedrock Map for the Antarctic Peninsula : Volume 8, Issue 1 (17/02/2014)  
Author: Huss, M.
Volume: Vol. 8, Issue 1
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Huss, M., & Farinotti, D. (2014). A High-resolution Bedrock Map for the Antarctic Peninsula : Volume 8, Issue 1 (17/02/2014). Retrieved from

Description: Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, 8093 Zurich, Switzerland. Assessing and projecting the dynamic response of glaciers on the Antarctic Peninsula to changed atmospheric and oceanic forcing requires high-resolution ice thickness data as an essential geometric constraint for ice flow models. Here, we derive a complete bedrock data set for the Antarctic Peninsula north of 70° S on a 100 m grid. We calculate distributed ice thickness based on surface topography and simple ice dynamic modelling. Our approach is constrained with all available thickness measurements from Operation IceBridge and gridded ice flow speeds for the entire study region. The new data set resolves the rugged subglacial topography in great detail, indicates deeply incised troughs, and shows that 34% of the ice volume is grounded below sea level. The Antarctic Peninsula has the potential to raise global sea level by 71 ± 5 mm. In comparison to Bedmap2, covering all Antarctica on a 1 km grid, a significantly higher mean ice thickness (+48%) is found.

A high-resolution bedrock map for the Antarctic Peninsula

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