The Cryosphere
The Cryosphere
TC
Articles | Volume 19, issue 7
Articles | Volume 19, issue 7
https://doi.org/10.5194/tc-19-2355-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-19-2355-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 7
Brief communication
 | 
02 Jul 2025
Brief communication |  | 02 Jul 2025

Brief communication: Reduced bandwidth improves the depth limit of the radar coherence method for detecting ice crystal fabric asymmetry

Ole Zeising, Álvaro Arenas-Pingarrón, Alex M. Brisbourne, and Carlos Martín

Data sets

Polarimetric phase-sensitive radar measurements at EastGRIP drill site, 2019 Ole Zeising and Angelika Humbert https://doi.org/10.1594/PANGAEA.951267

Crystal c-axes (fabric analyser G50) of ice core samples (vertical thin sections) collected from the polar ice core EGRIP, 111-1714 m depth Ilka Weikusat et al. https://doi.org/10.1594/PANGAEA.949248

Radar characterization of ice crystal orientation fabric and anisotropic rheology within Rutford Ice Stream, 2017-2019 T. Jordan et al. https://doi.org/10.5285/D5B7E5A1-B04D-48D8-A440-C010658EC146

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Short summary
Ice crystal orientation influences how glacier ice deforms. Radar polarimetry is commonly used to study the bulk ice crystal orientation, but the often used coherence method only provides information of the shallow ice in fast-flowing areas. This study shows that reducing the bandwidth of high-bandwidth radar data significantly enhances the depth limit of the coherence method. This improvement helps us to better understand ice dynamics in fast-flowing ice streams.
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