High-resolution variations in size, number and arrangement of air bubbles in the EPICA DML (Antarcitca) ice core
ABSTRACT. We investigated the large-scale (10–1000m) and small-scale (mm–cm) variations in size, number and arrangement of air bubbles in the EPICA Dronning Maud Land (EDML) (Antarctica) ice core, down to the end of the bubble/hydrate transition (BHT) zone. On the large scale, the bubble number dens...
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ftawi:oai:epic.awi.de:33825 2023-05-15T13:40:26+02:00 High-resolution variations in size, number and arrangement of air bubbles in the EPICA DML (Antarcitca) ice core Bendel, Verena Ueltzhöffer, K. J. Freitag, Johannes Kipfstuhl, Sepp Kuhs, Werner Garbe, Christoph S. Faria, Sergio H. 2013 application/pdf https://epic.awi.de/id/eprint/33825/ https://epic.awi.de/id/eprint/33825/1/Bendeletal2013.pdf https://hdl.handle.net/10013/epic.42156 https://hdl.handle.net/10013/epic.42156.d001 unknown INT GLACIOL SOC https://epic.awi.de/id/eprint/33825/1/Bendeletal2013.pdf https://hdl.handle.net/10013/epic.42156.d001 Bendel, V. , Ueltzhöffer, K. J. , Freitag, J. orcid:0000-0003-2654-9440 , Kipfstuhl, S. , Kuhs, W. , Garbe, C. S. and Faria, S. H. (2013) High-resolution variations in size, number and arrangement of air bubbles in the EPICA DML (Antarcitca) ice core , Journal of Glaciology, 59 (217), pp. 972-980 . doi:10.3189/2013JoG12J245 <https://doi.org/10.3189/2013JoG12J245> , hdl:10013/epic.42156 EPIC3Journal of Glaciology, INT GLACIOL SOC, 59(217), pp. 972-980, ISSN: 0022-1430 Article isiRev 2013 ftawi https://doi.org/10.3189/2013JoG12J245 2021-12-24T15:38:56Z ABSTRACT. We investigated the large-scale (10–1000m) and small-scale (mm–cm) variations in size, number and arrangement of air bubbles in the EPICA Dronning Maud Land (EDML) (Antarctica) ice core, down to the end of the bubble/hydrate transition (BHT) zone. On the large scale, the bubble number density shows a general correlation with the palaeo-temperature proxy, d18O, and the dust concentration, which means that in Holocene ice there are fewer bubbles than in glacial ice. Small-scale variations in bubble number and size were identified and compared. Above the BHT zone there exists a strong anticorrelation between bubble number density and mean bubble size. In glacial ice, layers of high number density and small bubble size are linked with layers with high impurity content, identified as cloudy bands. Therefore, we regard impurities as a controlling factor for the formation and distribution of bubbles in glacial ice. The anticorrelation inverts in the middle of the BHT zone. In the lower part of the BHT zone, bubble-free layers exist that are also associated with cloudy bands. The high contrast in bubble number density in glacial ice, induced by the impurities, indicates a much more pronounced layering in glacial firn than in modern firn. Article in Journal/Newspaper Antarc* Antarctica DML Dronning Maud Land EPICA ice core Journal of Glaciology Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Dronning Maud Land Journal of Glaciology 59 217 972 980 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
ABSTRACT. We investigated the large-scale (10–1000m) and small-scale (mm–cm) variations in size, number and arrangement of air bubbles in the EPICA Dronning Maud Land (EDML) (Antarctica) ice core, down to the end of the bubble/hydrate transition (BHT) zone. On the large scale, the bubble number density shows a general correlation with the palaeo-temperature proxy, d18O, and the dust concentration, which means that in Holocene ice there are fewer bubbles than in glacial ice. Small-scale variations in bubble number and size were identified and compared. Above the BHT zone there exists a strong anticorrelation between bubble number density and mean bubble size. In glacial ice, layers of high number density and small bubble size are linked with layers with high impurity content, identified as cloudy bands. Therefore, we regard impurities as a controlling factor for the formation and distribution of bubbles in glacial ice. The anticorrelation inverts in the middle of the BHT zone. In the lower part of the BHT zone, bubble-free layers exist that are also associated with cloudy bands. The high contrast in bubble number density in glacial ice, induced by the impurities, indicates a much more pronounced layering in glacial firn than in modern firn. |
format |
Article in Journal/Newspaper |
author |
Bendel, Verena Ueltzhöffer, K. J. Freitag, Johannes Kipfstuhl, Sepp Kuhs, Werner Garbe, Christoph S. Faria, Sergio H. |
spellingShingle |
Bendel, Verena Ueltzhöffer, K. J. Freitag, Johannes Kipfstuhl, Sepp Kuhs, Werner Garbe, Christoph S. Faria, Sergio H. High-resolution variations in size, number and arrangement of air bubbles in the EPICA DML (Antarcitca) ice core |
author_facet |
Bendel, Verena Ueltzhöffer, K. J. Freitag, Johannes Kipfstuhl, Sepp Kuhs, Werner Garbe, Christoph S. Faria, Sergio H. |
author_sort |
Bendel, Verena |
title |
High-resolution variations in size, number and arrangement of air bubbles in the EPICA DML (Antarcitca) ice core |
title_short |
High-resolution variations in size, number and arrangement of air bubbles in the EPICA DML (Antarcitca) ice core |
title_full |
High-resolution variations in size, number and arrangement of air bubbles in the EPICA DML (Antarcitca) ice core |
title_fullStr |
High-resolution variations in size, number and arrangement of air bubbles in the EPICA DML (Antarcitca) ice core |
title_full_unstemmed |
High-resolution variations in size, number and arrangement of air bubbles in the EPICA DML (Antarcitca) ice core |
title_sort |
high-resolution variations in size, number and arrangement of air bubbles in the epica dml (antarcitca) ice core |
publisher |
INT GLACIOL SOC |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/33825/ https://epic.awi.de/id/eprint/33825/1/Bendeletal2013.pdf https://hdl.handle.net/10013/epic.42156 https://hdl.handle.net/10013/epic.42156.d001 |
geographic |
Dronning Maud Land |
geographic_facet |
Dronning Maud Land |
genre |
Antarc* Antarctica DML Dronning Maud Land EPICA ice core Journal of Glaciology |
genre_facet |
Antarc* Antarctica DML Dronning Maud Land EPICA ice core Journal of Glaciology |
op_source |
EPIC3Journal of Glaciology, INT GLACIOL SOC, 59(217), pp. 972-980, ISSN: 0022-1430 |
op_relation |
https://epic.awi.de/id/eprint/33825/1/Bendeletal2013.pdf https://hdl.handle.net/10013/epic.42156.d001 Bendel, V. , Ueltzhöffer, K. J. , Freitag, J. orcid:0000-0003-2654-9440 , Kipfstuhl, S. , Kuhs, W. , Garbe, C. S. and Faria, S. H. (2013) High-resolution variations in size, number and arrangement of air bubbles in the EPICA DML (Antarcitca) ice core , Journal of Glaciology, 59 (217), pp. 972-980 . doi:10.3189/2013JoG12J245 <https://doi.org/10.3189/2013JoG12J245> , hdl:10013/epic.42156 |
op_doi |
https://doi.org/10.3189/2013JoG12J245 |
container_title |
Journal of Glaciology |
container_volume |
59 |
container_issue |
217 |
container_start_page |
972 |
op_container_end_page |
980 |
_version_ |
1766133660882305024 |