Density of snow trench samples from the EastGRIP site ...
We here report measured densities from a combination of records from the EastGRIP ice-core site. The data come from a trench and two ice cores: the shallow EGRIP-S6 core and the deep main core of the project. Based on these data, we parametrize the density as a function of depth, allowing us to prov...
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Online Access: | https://dx.doi.org/10.1594/pangaea.962757 https://doi.pangaea.de/10.1594/PANGAEA.962757 |
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ftdatacite:10.1594/pangaea.962757 2024-01-28T10:05:29+01:00 Density of snow trench samples from the EastGRIP site ... Rasmussen, Sune Olander Vinther, Bo Møllesøe Freitag, Johannes Kipfstuhl, Sepp 2023 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.962757 https://doi.pangaea.de/10.1594/PANGAEA.962757 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.962754 Data access is restricted (moratorium, sensitive data, license constraints) density DEPTH, ice/snow Density, ice Snow trench East Greenland Ice-core Project EGRIP Dataset dataset 2023 ftdatacite https://doi.org/10.1594/pangaea.962757 2024-01-04T19:53:41Z We here report measured densities from a combination of records from the EastGRIP ice-core site. The data come from a trench and two ice cores: the shallow EGRIP-S6 core and the deep main core of the project. Based on these data, we parametrize the density as a function of depth, allowing us to provide a standard transfer function between true depth and ice-equivalent depth which is consistent with the EGRIP density measurements. EGRIP density data are only available to 117 m depth, at which depth the density is about 900 kg/m^3 and the difference between true depth and ice-equivalent depth is about 22 m. The density and overburden profiles have been extended below this depth and all the way to 1200 m in order to provide a convenient, continuous and (mostly) smooth transfer function between true depth and ice-equivalent depth. See PDF file provided under 'Documentation' for full description of data and parametrization. ... : Dataset of averaged liner densities calculated from liners retrieved in 2016 from two 5 m deep and 50 m long trenches located approx. 500 m away from EGRIP main dome sampled with snow liners every 5 m (in total 20 liners per depth interval). 5 points covering the upper 5 m.Accuracy: Since the sampling was performed with carbon-fibre tubes manufactured with uncertainties less than 0.1 mm in diameter and height the main source of error comes from the sampling routine itself. Here we assume an uncertainty of 0.5 cm in height for the sampled snow within the tube and for the core cuts in the field (<1% in volume estimate). The weight of the snow and ice samples was measured with an uncertainty of 1 g giving uncertainties of sample weights less than 1 per mil. The overall uncertainty of calculated density for the meter-segments is therefore less than 1%. ... Dataset East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core DataCite Metadata Store (German National Library of Science and Technology) Greenland |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
density DEPTH, ice/snow Density, ice Snow trench East Greenland Ice-core Project EGRIP |
spellingShingle |
density DEPTH, ice/snow Density, ice Snow trench East Greenland Ice-core Project EGRIP Rasmussen, Sune Olander Vinther, Bo Møllesøe Freitag, Johannes Kipfstuhl, Sepp Density of snow trench samples from the EastGRIP site ... |
topic_facet |
density DEPTH, ice/snow Density, ice Snow trench East Greenland Ice-core Project EGRIP |
description |
We here report measured densities from a combination of records from the EastGRIP ice-core site. The data come from a trench and two ice cores: the shallow EGRIP-S6 core and the deep main core of the project. Based on these data, we parametrize the density as a function of depth, allowing us to provide a standard transfer function between true depth and ice-equivalent depth which is consistent with the EGRIP density measurements. EGRIP density data are only available to 117 m depth, at which depth the density is about 900 kg/m^3 and the difference between true depth and ice-equivalent depth is about 22 m. The density and overburden profiles have been extended below this depth and all the way to 1200 m in order to provide a convenient, continuous and (mostly) smooth transfer function between true depth and ice-equivalent depth. See PDF file provided under 'Documentation' for full description of data and parametrization. ... : Dataset of averaged liner densities calculated from liners retrieved in 2016 from two 5 m deep and 50 m long trenches located approx. 500 m away from EGRIP main dome sampled with snow liners every 5 m (in total 20 liners per depth interval). 5 points covering the upper 5 m.Accuracy: Since the sampling was performed with carbon-fibre tubes manufactured with uncertainties less than 0.1 mm in diameter and height the main source of error comes from the sampling routine itself. Here we assume an uncertainty of 0.5 cm in height for the sampled snow within the tube and for the core cuts in the field (<1% in volume estimate). The weight of the snow and ice samples was measured with an uncertainty of 1 g giving uncertainties of sample weights less than 1 per mil. The overall uncertainty of calculated density for the meter-segments is therefore less than 1%. ... |
format |
Dataset |
author |
Rasmussen, Sune Olander Vinther, Bo Møllesøe Freitag, Johannes Kipfstuhl, Sepp |
author_facet |
Rasmussen, Sune Olander Vinther, Bo Møllesøe Freitag, Johannes Kipfstuhl, Sepp |
author_sort |
Rasmussen, Sune Olander |
title |
Density of snow trench samples from the EastGRIP site ... |
title_short |
Density of snow trench samples from the EastGRIP site ... |
title_full |
Density of snow trench samples from the EastGRIP site ... |
title_fullStr |
Density of snow trench samples from the EastGRIP site ... |
title_full_unstemmed |
Density of snow trench samples from the EastGRIP site ... |
title_sort |
density of snow trench samples from the eastgrip site ... |
publisher |
PANGAEA |
publishDate |
2023 |
url |
https://dx.doi.org/10.1594/pangaea.962757 https://doi.pangaea.de/10.1594/PANGAEA.962757 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core |
genre_facet |
East Greenland East Greenland Ice-core Project Greenland Greenland ice core Greenland Ice core Project ice core |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.962754 |
op_rights |
Data access is restricted (moratorium, sensitive data, license constraints) |
op_doi |
https://doi.org/10.1594/pangaea.962757 |
_version_ |
1789331790540832768 |