Continuous density log of icecore BER11C95_25, supplement to: Gerland, Sebastian; Oerter, Hans; Kipfstuhl, Sepp; Wilhelms, Frank; Miller, Heinz (1999): Continuous density log of a 181 metre long ice core from the summit of Berkner Island, Antarctica. Annals of Glaciology, 29, 215-219
A 181 m long ice core was drilled at 79° 36' 51'' S, 45° 43' 28'' W, near the summit of Berkner Island, Antarctica 886 m a.s.l.). Berkner Island is located within the Filchner and Ronne Ice Shelves, and the ice near the summit shows little lateral flow. The density of t...
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1999
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ftdatacite:10.1594/pangaea.227732 2023-05-15T13:42:37+02:00 Continuous density log of icecore BER11C95_25, supplement to: Gerland, Sebastian; Oerter, Hans; Kipfstuhl, Sepp; Wilhelms, Frank; Miller, Heinz (1999): Continuous density log of a 181 metre long ice core from the summit of Berkner Island, Antarctica. Annals of Glaciology, 29, 215-219 Gerland, Sebastian Wilhelms, Frank 1999 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.227732 https://doi.pangaea.de/10.1594/PANGAEA.227732 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.3189/172756499781821427 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY DEPTH, ice/snow Density, mass density Ice drill Gamma-ray attenuation density Wilhelms, 1996 Glaciology @ AWI AWI_Glac Supplementary Dataset dataset Dataset 1999 ftdatacite https://doi.org/10.1594/pangaea.227732 https://doi.org/10.3189/172756499781821427 2021-11-05T12:55:41Z A 181 m long ice core was drilled at 79° 36' 51'' S, 45° 43' 28'' W, near the summit of Berkner Island, Antarctica 886 m a.s.l.). Berkner Island is located within the Filchner and Ronne Ice Shelves, and the ice near the summit shows little lateral flow. The density of the ice core was measured every 3 mm along ist length, using attenuation of a gamma-ray beam, which gave an absolute accuracy of 2%. As expected, there is a general density increase with depth, the maximum densities of > 900 kg/m**3 being reached just above 100 m depth. Comparison with electrical conductivity method (ECM) shows density variations with the same wavelength as annual signals, which can be seen in the ECM log (higher acidity during summer). In the shallowest part of the core, the density of winter layers is higher than that of summer layers, a relationship which is reversed at greater depth. We assume that the densification rates for the two types of firn are different. Similar density phenomena were observed on ice cores from Greenland, showing that such phenomena are not a local effect. Dataset Antarc* Antarctica Berkner Island Greenland ice core Ice Shelves DataCite Metadata Store (German National Library of Science and Technology) Berkner Island ENVELOPE(-48.117,-48.117,-79.333,-79.333) Greenland |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
DEPTH, ice/snow Density, mass density Ice drill Gamma-ray attenuation density Wilhelms, 1996 Glaciology @ AWI AWI_Glac |
spellingShingle |
DEPTH, ice/snow Density, mass density Ice drill Gamma-ray attenuation density Wilhelms, 1996 Glaciology @ AWI AWI_Glac Gerland, Sebastian Wilhelms, Frank Continuous density log of icecore BER11C95_25, supplement to: Gerland, Sebastian; Oerter, Hans; Kipfstuhl, Sepp; Wilhelms, Frank; Miller, Heinz (1999): Continuous density log of a 181 metre long ice core from the summit of Berkner Island, Antarctica. Annals of Glaciology, 29, 215-219 |
topic_facet |
DEPTH, ice/snow Density, mass density Ice drill Gamma-ray attenuation density Wilhelms, 1996 Glaciology @ AWI AWI_Glac |
description |
A 181 m long ice core was drilled at 79° 36' 51'' S, 45° 43' 28'' W, near the summit of Berkner Island, Antarctica 886 m a.s.l.). Berkner Island is located within the Filchner and Ronne Ice Shelves, and the ice near the summit shows little lateral flow. The density of the ice core was measured every 3 mm along ist length, using attenuation of a gamma-ray beam, which gave an absolute accuracy of 2%. As expected, there is a general density increase with depth, the maximum densities of > 900 kg/m**3 being reached just above 100 m depth. Comparison with electrical conductivity method (ECM) shows density variations with the same wavelength as annual signals, which can be seen in the ECM log (higher acidity during summer). In the shallowest part of the core, the density of winter layers is higher than that of summer layers, a relationship which is reversed at greater depth. We assume that the densification rates for the two types of firn are different. Similar density phenomena were observed on ice cores from Greenland, showing that such phenomena are not a local effect. |
format |
Dataset |
author |
Gerland, Sebastian Wilhelms, Frank |
author_facet |
Gerland, Sebastian Wilhelms, Frank |
author_sort |
Gerland, Sebastian |
title |
Continuous density log of icecore BER11C95_25, supplement to: Gerland, Sebastian; Oerter, Hans; Kipfstuhl, Sepp; Wilhelms, Frank; Miller, Heinz (1999): Continuous density log of a 181 metre long ice core from the summit of Berkner Island, Antarctica. Annals of Glaciology, 29, 215-219 |
title_short |
Continuous density log of icecore BER11C95_25, supplement to: Gerland, Sebastian; Oerter, Hans; Kipfstuhl, Sepp; Wilhelms, Frank; Miller, Heinz (1999): Continuous density log of a 181 metre long ice core from the summit of Berkner Island, Antarctica. Annals of Glaciology, 29, 215-219 |
title_full |
Continuous density log of icecore BER11C95_25, supplement to: Gerland, Sebastian; Oerter, Hans; Kipfstuhl, Sepp; Wilhelms, Frank; Miller, Heinz (1999): Continuous density log of a 181 metre long ice core from the summit of Berkner Island, Antarctica. Annals of Glaciology, 29, 215-219 |
title_fullStr |
Continuous density log of icecore BER11C95_25, supplement to: Gerland, Sebastian; Oerter, Hans; Kipfstuhl, Sepp; Wilhelms, Frank; Miller, Heinz (1999): Continuous density log of a 181 metre long ice core from the summit of Berkner Island, Antarctica. Annals of Glaciology, 29, 215-219 |
title_full_unstemmed |
Continuous density log of icecore BER11C95_25, supplement to: Gerland, Sebastian; Oerter, Hans; Kipfstuhl, Sepp; Wilhelms, Frank; Miller, Heinz (1999): Continuous density log of a 181 metre long ice core from the summit of Berkner Island, Antarctica. Annals of Glaciology, 29, 215-219 |
title_sort |
continuous density log of icecore ber11c95_25, supplement to: gerland, sebastian; oerter, hans; kipfstuhl, sepp; wilhelms, frank; miller, heinz (1999): continuous density log of a 181 metre long ice core from the summit of berkner island, antarctica. annals of glaciology, 29, 215-219 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1999 |
url |
https://dx.doi.org/10.1594/pangaea.227732 https://doi.pangaea.de/10.1594/PANGAEA.227732 |
long_lat |
ENVELOPE(-48.117,-48.117,-79.333,-79.333) |
geographic |
Berkner Island Greenland |
geographic_facet |
Berkner Island Greenland |
genre |
Antarc* Antarctica Berkner Island Greenland ice core Ice Shelves |
genre_facet |
Antarc* Antarctica Berkner Island Greenland ice core Ice Shelves |
op_relation |
https://dx.doi.org/10.3189/172756499781821427 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.227732 https://doi.org/10.3189/172756499781821427 |
_version_ |
1766170256842162176 |