Density of the EastGRIP main core ...
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.962755 https://doi.pangaea.de/10.1594/PANGAEA.962755 |
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ftdatacite:10.1594/pangaea.962755 2024-01-28T10:05:29+01:00 Density of the EastGRIP main core ... Rasmussen, Sune Olander Vinther, Bo Møllesøe Freitag, Johannes Kipfstuhl, Sepp 2023 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.962755 https://doi.pangaea.de/10.1594/PANGAEA.962755 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 Ice drill East Greenland Ice-core Project EGRIP Dataset dataset 2023 ftdatacite https://doi.org/10.1594/pangaea.962755 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. ... : Data from the main EastGRIP ice core. The ice core is logged and subsequently cut into 55 cm sections. All pieces of each section (normally only 1 or 2 pieces) are then placed in a plastic bag. The weight of the core and bag is determined using a calibrated scale with a precision of 1 g. The density is calculated by subtracting the weight of the bag and dividing by the volume of the core (using a fixed core diameter of 9.78 cm).Accuracy: Precision of density measurements is estimated to about 1% or better: The main limiting factors are variations in core diameter (from the drilling) and small missing bits at breaks and around core catchers. We include data from sections where there we no large missing bits, which is why the data are of non-equal spacing. ... 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 Ice drill East Greenland Ice-core Project EGRIP |
spellingShingle |
density DEPTH, ice/snow Density, ice Ice drill East Greenland Ice-core Project EGRIP Rasmussen, Sune Olander Vinther, Bo Møllesøe Freitag, Johannes Kipfstuhl, Sepp Density of the EastGRIP main core ... |
topic_facet |
density DEPTH, ice/snow Density, ice Ice drill 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. ... : Data from the main EastGRIP ice core. The ice core is logged and subsequently cut into 55 cm sections. All pieces of each section (normally only 1 or 2 pieces) are then placed in a plastic bag. The weight of the core and bag is determined using a calibrated scale with a precision of 1 g. The density is calculated by subtracting the weight of the bag and dividing by the volume of the core (using a fixed core diameter of 9.78 cm).Accuracy: Precision of density measurements is estimated to about 1% or better: The main limiting factors are variations in core diameter (from the drilling) and small missing bits at breaks and around core catchers. We include data from sections where there we no large missing bits, which is why the data are of non-equal spacing. ... |
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 the EastGRIP main core ... |
title_short |
Density of the EastGRIP main core ... |
title_full |
Density of the EastGRIP main core ... |
title_fullStr |
Density of the EastGRIP main core ... |
title_full_unstemmed |
Density of the EastGRIP main core ... |
title_sort |
density of the eastgrip main core ... |
publisher |
PANGAEA |
publishDate |
2023 |
url |
https://dx.doi.org/10.1594/pangaea.962755 https://doi.pangaea.de/10.1594/PANGAEA.962755 |
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.962755 |
_version_ |
1789331789737623552 |