Extreme firn metamorphism: impact of decades of vapor transport on near-surface firn at a low-accumulation glazed site on the East Antarctic plateau ...
Snow and firn properties control the transport of vapor, gases and water between the atmosphere and the underlying strata. An understanding of this transport and the properties that control it is important for predicting air–snow transfer of chemical species and for interpreting ice cores. Remote-se...
Main Authors: | , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Cambridge University Press
2017
|
Subjects: | |
Online Access: | https://dx.doi.org/10.13016/m216sl-acpl https://mdsoar.org/handle/11603/24292 |
id |
ftdatacite:10.13016/m216sl-acpl |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.13016/m216sl-acpl 2023-08-27T04:04:45+02:00 Extreme firn metamorphism: impact of decades of vapor transport on near-surface firn at a low-accumulation glazed site on the East Antarctic plateau ... Albert, Mary Shuman, Christopher Courville, Zoe Bauer, Robert Fahnestock, Mark Scambos, Ted 2017 https://dx.doi.org/10.13016/m216sl-acpl https://mdsoar.org/handle/11603/24292 unknown Cambridge University Press Public Domain Mark 1.0 This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. http://creativecommons.org/publicdomain/mark/1.0/ CreativeWork article 2017 ftdatacite https://doi.org/10.13016/m216sl-acpl 2023-08-07T14:24:23Z Snow and firn properties control the transport of vapor, gases and water between the atmosphere and the underlying strata. An understanding of this transport and the properties that control it is important for predicting air–snow transfer of chemical species and for interpreting ice cores. Remote-sensing images of East Antarctica show large areas of alternating light and dark bands. These low-amplitude, long-wavelength features have glazed downwind faces and rough upwind faces and are called megadunes. The first linked measurements of the permeability and the associated microstructure for a glazed area within a well-defined megadune area are reported in this paper. Permeability and density were measured, along with grain-scale properties derived from digital image processing of preserved thick sections, at this cold, low-accumulation glazed site. A clear layering pattern exists. In the top meter the firn density ranges from 0.24 to 0.50 g cm⁻³. Permeability measurements range from 50 x 10⁻¹⁰ to 200 x ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica DataCite Metadata Store (German National Library of Science and Technology) Antarctic East Antarctica |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
description |
Snow and firn properties control the transport of vapor, gases and water between the atmosphere and the underlying strata. An understanding of this transport and the properties that control it is important for predicting air–snow transfer of chemical species and for interpreting ice cores. Remote-sensing images of East Antarctica show large areas of alternating light and dark bands. These low-amplitude, long-wavelength features have glazed downwind faces and rough upwind faces and are called megadunes. The first linked measurements of the permeability and the associated microstructure for a glazed area within a well-defined megadune area are reported in this paper. Permeability and density were measured, along with grain-scale properties derived from digital image processing of preserved thick sections, at this cold, low-accumulation glazed site. A clear layering pattern exists. In the top meter the firn density ranges from 0.24 to 0.50 g cm⁻³. Permeability measurements range from 50 x 10⁻¹⁰ to 200 x ... |
format |
Article in Journal/Newspaper |
author |
Albert, Mary Shuman, Christopher Courville, Zoe Bauer, Robert Fahnestock, Mark Scambos, Ted |
spellingShingle |
Albert, Mary Shuman, Christopher Courville, Zoe Bauer, Robert Fahnestock, Mark Scambos, Ted Extreme firn metamorphism: impact of decades of vapor transport on near-surface firn at a low-accumulation glazed site on the East Antarctic plateau ... |
author_facet |
Albert, Mary Shuman, Christopher Courville, Zoe Bauer, Robert Fahnestock, Mark Scambos, Ted |
author_sort |
Albert, Mary |
title |
Extreme firn metamorphism: impact of decades of vapor transport on near-surface firn at a low-accumulation glazed site on the East Antarctic plateau ... |
title_short |
Extreme firn metamorphism: impact of decades of vapor transport on near-surface firn at a low-accumulation glazed site on the East Antarctic plateau ... |
title_full |
Extreme firn metamorphism: impact of decades of vapor transport on near-surface firn at a low-accumulation glazed site on the East Antarctic plateau ... |
title_fullStr |
Extreme firn metamorphism: impact of decades of vapor transport on near-surface firn at a low-accumulation glazed site on the East Antarctic plateau ... |
title_full_unstemmed |
Extreme firn metamorphism: impact of decades of vapor transport on near-surface firn at a low-accumulation glazed site on the East Antarctic plateau ... |
title_sort |
extreme firn metamorphism: impact of decades of vapor transport on near-surface firn at a low-accumulation glazed site on the east antarctic plateau ... |
publisher |
Cambridge University Press |
publishDate |
2017 |
url |
https://dx.doi.org/10.13016/m216sl-acpl https://mdsoar.org/handle/11603/24292 |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_rights |
Public Domain Mark 1.0 This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. http://creativecommons.org/publicdomain/mark/1.0/ |
op_doi |
https://doi.org/10.13016/m216sl-acpl |
_version_ |
1775353251014639616 |