Radar attenuation demonstrates advective cooling in the Siple Coast ice streams

• Published in: Journal of Glaciology
• Main Authors: Hills, Benjamin H., Christianson, Knut, Jacobel, Robert W., Conway, Howard, Pettersson, Rickard
• Format: Article in Journal/Newspaper
• Language: English
• Published: Uppsala universitet, Luft-, vatten- och landskapslära 2022
• Subjects: ice dynamics; ice streams; ice temperature; radio-echo sounding; Oceanography; Hydrology and Water Resources; Oceanografi; hydrologi och vattenresurser; Bindschadler Ice Stream; Kamb Ice Stream; Siple; Siple Coast; Whillans; Whillans Ice Stream; Journal of Glaciology
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-510584; https://doi.org/10.1017/jog.2022.86

Ice streams are warmed by shear strain, both vertical shear near the bed and lateral shear at the margins. Warm ice deforms more easily, establishing a positive feedback loop in an ice stream where fast flow leads to warm ice and then to even faster flow. Here, we use radar attenuation measurements...