Locations and thickness of sediment-laden basal ice zones at Jutulstraumen Glacier onset (East Antarctica)

Understanding the material properties and physical conditions of basal ice is crucial for a comprehensive understanding of Antarctic ice-sheet dynamics. Yet, direct data are sparse and difficult to acquire, necessitating geophysical data for analysis. Here, we employed high-resolution ultra-wideband radar to map high-backscatter zones near the glacier bed within East Antarctica's Jutulstraumen drainage basin. Our results revealed that the basal ice in an area of ~ 10,000 square kilometers is composed of along-flow oriented sediment-laden basal ice units connected to the basal substrate, extending up to several hundred meters of thickness. Three-dimensional thermomechanical modeling suggests these units formed via basal freeze-on of subglacial water originating further upstream. Our findings suggest that basal freeze-on, and the entrainment and transport of subglacial material play a significant role for an accurate representation of material, physical, and rheological properties of the Antarctic ice sheet's basal ice, ultimately enhancing the accuracy and reliability of ice-sheet modeling. Here, we publish locations and thickness of high-backscatter zones at the onset of the Jutulstraumen glacier in East Antarctica.

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Cite this as

Franke, Steven, Wolovick, Michael (2024). Dataset: Locations and thickness of sediment-laden basal ice zones at Jutulstraumen Glacier onset (East Antarctica). https://doi.org/10.1594/PANGAEA.963889

DOI retrieved: 2024

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-4.0
Source https://doi.org/10.1594/PANGAEA.963889
Author Franke, Steven
Given Name Steven
Family Name Franke
More Authors
Wolovick, Michael
Source Creation 2024
Publication Year 2024
Resource Type text/tab-separated-values - filename: Franke_2023_DML
Subject Areas
Name: Lithosphere

Related Identifiers
Title: Sediment freeze‐on and transport near the onset of a fast‐flowing glacier in East Antarctica
Identifier: https://doi.org/10.1029/2023GL107164
Type: DOI
Relation: References
Year: 2024
Source: Geophysical Research Letters
Authors: Franke Steven , Wolovick Michael , Drews Reinhard , Jansen Daniela , Matsuoka Kenichi , Bons Paul D , Franke Steven , Gerber Tamara Annina , Warren Craig , Jansen Daniela , Eisen Olaf , Dahl-Jensen Dorthe , Wolovick Michael , Franke Steven .

Title: Investigating the Radar Response of Englacial Debris Entrained Basal Ice Units in East Antarctica Using Electromagnetic Forward Modeling
Identifier: https://doi.org/10.1109/TGRS.2023.3277874
Type: DOI
Relation: References
Year: 2023
Source: IEEE Transactions on Geoscience and Remote Sensing
Authors: Franke Steven , Wolovick Michael , Drews Reinhard , Jansen Daniela , Matsuoka Kenichi , Bons Paul D , Franke Steven , Gerber Tamara Annina , Warren Craig , Jansen Daniela , Eisen Olaf , Dahl-Jensen Dorthe , Wolovick Michael , Franke Steven .

Title: Modeled freeze-on rates at Jutulstraumen Glacier onset (East Antarctica)
Identifier: https://doi.org/10.1594/PANGAEA.963891
Type: DOI
Relation: References
Year: 2024
Authors: Franke Steven , Wolovick Michael , Drews Reinhard , Jansen Daniela , Matsuoka Kenichi , Bons Paul D , Franke Steven , Gerber Tamara Annina , Warren Craig , Jansen Daniela , Eisen Olaf , Dahl-Jensen Dorthe , Wolovick Michael , Franke Steven .