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Publication:
Enclosure of air during metamorphosis of dry firn to ice

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cris.virtualsource.author-orcid977d8363-4cee-48f8-9b0d-32b4267fd06e
cris.virtualsource.author-orcid6abf3a74-19dd-4fdf-b8fe-8147cbf0f982
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.contributor.authorStauffer, Bernhard
dc.contributor.authorSchwander, Jakob
dc.contributor.authorOeschger, H.
dc.date.accessioned2024-09-02T17:49:39Z
dc.date.available2024-09-02T17:49:39Z
dc.date.issued1985
dc.description.abstractIf cold firn has reached a density of about 0.55 Mg m-3, further densificaron occurs by a sintering process which increases the contact surface between the firn grains. The pore volume is decreasing continuously but the firn remains permeable to air up to a density of 0.82 Mg m-3. At about this density the remaining air in the pore volume is closed off in isolated bubbles. We are interested in the age and the age distribution of the air enclosed in bubbles relative to the age of the surrounding ice, and are investigating the development of the pore volume in firn. A newly constructed measuring device allows the field measurement of the amount of air which is already enclosed in bubbles of firn samples. Measurements have been made during summer 1983 in Greenland and during winter 1983/84 at the South Pole. The results are discussed and compared with results obtained with a simplified statistical sintering model, using some results of percolation theory.
dc.description.numberOfPages5
dc.description.sponsorshipPhysikalisches Institut
dc.description.sponsorshipPhysikalisches Institut, Klima- und Umweltphysik (KUP)
dc.identifier.doi10.48350/158754
dc.identifier.publisherDOI10.3189/1985AoG6-1-108-112
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/43365
dc.language.isoen
dc.publisherInternational Glaciological Society
dc.relation.conferenceSymposium on Snow and Ice Processes at the Earth's Surface
dc.relation.ispartofAnnals of glaciology
dc.relation.issn0260-3055
dc.relation.organizationDCD5A442BF29E17DE0405C82790C4DE2
dc.relation.organizationDCD5A442C44AE17DE0405C82790C4DE2
dc.subject.ddc500 - Science::530 - Physics
dc.titleEnclosure of air during metamorphosis of dry firn to ice
dc.typeconference_item
dspace.entity.typePublication
oaire.citation.conferenceDate2-7 September 1984
oaire.citation.conferencePlaceSapporo, Japan
oaire.citation.endPage112
oaire.citation.startPage108
oaire.citation.volume6
oairecerif.author.affiliationPhysikalisches Institut
oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
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unibe.date.licenseChanged2021-10-14 07:22:14
unibe.description.ispublishedpub
unibe.eprints.legacyId158754
unibe.refereedTRUE
unibe.subtype.conferencepaper

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