Language selection

Government of Canada / Gouvernement du Canada

Search

Measurements on air porosity of sea ice

From National Research Council Canada

Download
  1. (PDF, 1.4 MiB)
AuthorSearch for:
FormatText, Article
Subjectice; air infiltration; porosity; sea water; air saturation ratio in meltwater; bubble pressure; arctic sea ice
Abstract
The air content of sea ice can be measured directly by melting a sample and collecting the released air, provided the air saturation ratio in the meltwater is known. The saturation ratio was found experimentally to be a function of three parameters: the time after an ice sample was melted, the average bubble size, and the air porosity of the sample. Since the last parameter is the term to be determined, an iteration method was employed in calculations of porosity. The bubble pressure was assumed to be at one atmospheric pressure. The vertical profile of air porosity was thus obtained for first-year sea ice in the Arctic. The results were in good agreement with estimations of porosity made from density values measured for the same samples. This indicates that the bubble pressure is near one atmospheric pressure.
Publication date
In
  • Annals of Glaciology 4 (1983): 204–208.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-P-1129
NRC numberNRCC 22615
NRC-IRC-117
NPARC number20386294
Export citationExport as RIS
Report a correctionReport a correction (opens in a new tab)
Record identifier60d30e49-7444-4955-a98c-8e21b54254cd
Record created2012-07-25
Record modified2023-12-18
Date modified: