Microstructure maps with indicated micro-inclusions and grain boundaries (GB) of eleven samples (138-1340) m from the EastGRIP ice core ...

• Main Authors: Stoll, Nicolas, Weikusat, Ilka, Eichler, Jan
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: EastGRIP; EGRIP; Greenland; Ice core; impurities; microscopy; Raman spectroscopy; Sample code/label; DEPTH, ice/snow; Size; Age; Impurities; Area index; p-value; Ratio; Binary Object; Ice drill; East Greenland Ice-core Project EGRIP; Glaciology @ AWI AWI_Glac; Alfred Wegener Institute; East Greenland; East Greenland Ice-core Project; Greenland ice core; Greenland Ice core Project; ice core
• Online Access: https://dx.doi.org/10.1594/pangaea.933045; https://doi.pangaea.de/10.1594/PANGAEA.933045

High-resolution microstructure maps were created from several hundred micro-photographs from eleven samples from the upper 1340 m of the East Greenland Ice Core Project ice core in North-East Greenland. Ice samples were drilled and processed between 2016 and 2019, microstructure mapping was performed between January 2020 and October 2020 at the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research. The samples are between 1.0 and 14.1 ka yr old and cover the Holocene, Younger Dryas, and Bolling Allerod. Sample sizes are usually 10 x 10 mm; some samples are up to 90 mm long. The maps were used to locate solid micro-inclusions 500 micrometer below the sample surface and to analyse the grain boundary area and the amount of micro-inclusions located at grain boundaries. Tiff images include the mapped micro-inclusions and can be opened with ImageJ oder Fiji. The first three or four numbers indicate the samples bag, the number after the underscore implies the section of the respective bag. Yellow ...