Articles | Volume 10, issue 3
https://doi.org/10.5194/tc-10-1125-2016
https://doi.org/10.5194/tc-10-1125-2016
Research article
 | 
27 May 2016
Research article |  | 27 May 2016

Imaging air volume fraction in sea ice using non-destructive X-ray tomography

Odile Crabeck, Ryan Galley, Bruno Delille, Brent Else, Nicolas-Xavier Geilfus, Marcos Lemes, Mathieu Des Roches, Pierre Francus, Jean-Louis Tison, and Søren Rysgaard

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Short summary
We present a new non-destructive X-ray-computed tomography technique to quantify the air volume fraction and produce separate 3-D images of air-volume inclusions in sea ice. While the internal layers showed air-volume fractions < 2 %, the ice–air interface (top 2 cm) showed values up to 5 %. As a result of the presence of large bubbles and higher air volume fraction measurements in sea ice, we introduce new perspectives on processes regulating gas exchange at the ice–atmosphere interface.