GRIP ice core detailed water isotope (δ18O) data

The ice core was drilled during the GRIP project in 1989-1992 at the Summit of the Greenland ice sheet. The length is 3025 m. Present-day accumulation 0.23 m ice/yr. Position 72.57N 37.62W, 3232 m a.s.l. Data from the top 101.3 m comes from the S3 shallow core, but the two data sets have been fully...

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Bibliographic Details
Main Authors: Rasmussen, Sune Olander, Vinther, Bo Møllesøe
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
d18O
DEPTH
ice/snow
Greenland
GRIP
Ice core
ISTUK
ISTUK electromechanical drill
Mass spectrometer
MSPEC
Sampling/drilling ice
water stable isotopes
δ18O
water
ice core
Ice Sheet
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.942851
https://doi.org/10.1594/PANGAEA.942851
Description
Summary:The ice core was drilled during the GRIP project in 1989-1992 at the Summit of the Greenland ice sheet. The length is 3025 m. Present-day accumulation 0.23 m ice/yr. Position 72.57N 37.62W, 3232 m a.s.l. Data from the top 101.3 m comes from the S3 shallow core, but the two data sets have been fully integrated on a common depth scale. The delta-18O data were all measured immediately after the drilling (1989-90). The delta-18O data uncertainty is 0.1 per mil. All samples are cut in 2.5cm depth resolution and sample depths are for the bottom of each sample. As diffusion in the firn and snow degrade the annual signal, the data are also provided in a deconvoluted version that seeks to correct for this effect. Following the approach of S.J. Johnsen, the deconvolution uses an adaptive cut-off frequency permitting a fixed maximimum amplification (50) of the spectral components in the original data.

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