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Measurements were conducted to determine the carbonyl sulfide levels in ancient air preserved in the Greenland ice sheet using samples from the GISP2D and GISP2B ice cores from Summit, Greenland. The GISP2D is a fluid-drilled core and the GISP2B is a dry-drilled core. This data set includes four CSV files. Most of the measurements are from the GISP2D ice core and 3 out of the 4 data files associated with this submission include data from the GISP2D. Both dry and wet extraction methods were used to extract the ice core air. All dry extraction-based GISP2D data are presented in one file. The wet extraction-based data are split between 3 data files: 1) GISP2B data, 2) shallow GISP2D data, 3) deep GISP2D data. The shallow and deep wet extraction-based GISP2D data are presented in 2 separate files despite including some overlapping depths because the measurements were conducted over different time periods. All data are depth-coded and presented "as measured" with associated 1 sigma uncertainties after having gone through a preliminary quality control and having been finalized in terms of calibration. Note that the wet extraction-based measurements require a solubility correction before they can be compared with the dry extraction-based measurements from the same depths.
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ALHIC2201 and ALHIC2302 3D ECM and Layer Orientations
This dataset includes three-dimensional multitrack electrical conductivity measurements (3D ECM) results from measurements in the upper sections of the ALHIC2201 and ALHIC2302 large (241mm) diameter ice cores drilled in the Allan Hills blue ice area (76.73°S,159.36°E) in Victoria Land, East Antarctica. The data extends from the surface to 23.0 m depth in ALHIC2201 and from 8.5 m to 46.3 m depth in ALHIC2302. We include the raw 3D ECM data (AC and DC multitrack ECM measurements on perpendicular faces of a quarter-core cut) in CSV format and basic plots of this data. We also provide dip and dip direction estimates of the layering observed in each core section in a CSV table.
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- Award ID(s):
- 2019719
- PAR ID:
- 10608369
- Publisher / Repository:
- U.S. Antarctic Program (USAP) Data Center
- Date Published:
- Subject(s) / Keyword(s):
- Cryosphere
- Format(s):
- Medium: X
- Location:
- Allan Hills; Antarctica; (Latitude:-76.73; Longitude:159.36)
- Right(s):
- Creative Commons Attribution 4.0 International
- Sponsoring Org:
- National Science Foundation
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