Articles | Volume 17, issue 5
https://doi.org/10.5194/tc-17-1839-2023
https://doi.org/10.5194/tc-17-1839-2023
Research article
 | 
05 May 2023
Research article |  | 05 May 2023

Spatial characterization of near-surface structure and meltwater runoff conditions across the Devon Ice Cap from dual-frequency radar reflectivity

Kristian Chan, Cyril Grima, Anja Rutishauser, Duncan A. Young, Riley Culberg, and Donald D. Blankenship

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Cited articles

Arnold, E., Rodriguez-Morales, F., Paden, J., Leuschen, C., Keshmiri, S., Yan, S., Ewing, M., Hale, R., Mahmood, A., Blevins, A., Mishra, A., Karidi, T., Miller, B., and Sonntag, J.: HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms, Geosciences, 8, 182, https://doi.org/10.3390/geosciences8050182, 2018. 
Arnold, E., Leuschen, C., Rodriguez-Morales, F., Li, J., Paden, J., Hale, R., and Keshmiri, S.: CReSIS airborne radars and platforms for ice and snow sounding, Ann. Glaciol., 61, 58–67, https://doi.org/10.1017/aog.2019.37, 2019. 
Ashmore, D. W., Mair, D. W. F., and Burgess, D. O.: Meltwater percolation, impermeable layer formation and runoff buffering on Devon Ice Cap, Canada, J. Glaciol., 66, 61–73, https://doi.org/10.1017/jog.2019.80, 2020. 
Bell, C., Mair, D., Burgess, D., Sharp, M., Demuth, M., Cawkwell, F., Bingham, R., and Wadham, J.: Spatial and temporal variability in the snowpack of a High Arctic ice cap: implications for mass-change measurements, Ann. Glaciol., 48, 159–170, https://doi.org/10.3189/172756408784700725, 2008. 
Bezeau, P., Sharp, M., Burgess, D., and Gascon, G.: Firn profile changes in response to extreme 21st-century melting at Devon Ice Cap, Nunavut, Canada, J. Glaciol., 59, 981–991, https://doi.org/10.3189/2013JoG12J208, 2013. 
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Short summary
Climate warming has led to more surface meltwater produced on glaciers that can refreeze in firn to form ice layers. Our work evaluates the use of dual-frequency ice-penetrating radar to characterize these ice layers on the Devon Ice Cap. Results indicate that they are meters thick and widespread, and thus capable of supporting lateral meltwater runoff from the top of ice layers. We find that some of this meltwater runoff could be routed through supraglacial rivers in the ablation zone.