Microstructure mapping, Raman, Visual Stratigraphy and SEM measurements of the EGRIP and EDML ice core ...

Insoluble and soluble impurities, enclosed in polar ice sheets, have a major impact on the deformation behaviour of the ice. Large-, Macro and Micro-scale deformation observed in ice cores has been retraced to impurities in the ice, and therefore the exact location of the impurities is important. Ov...

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Bibliographic Details
Main Authors: Stoll, Nicolas, Weikusat, Ilka
Format: Dataset
Language:English
Published: PANGAEA 2020
Subjects:
cloudy bands
EDML
EGRIP
Ice core
impurities
Microstructure mapping
Raman
SEM
Event label
DEPTH, ice/snow
Binary Object
EPICA drill
Ice drill
EPICA-Campaigns
Kohnen Station
Greenland
Kohnen
East Greenland
East Greenland Ice-core Project
EPICA
Greenland ice core
Greenland Ice core Project
ice core
Online Access:https://dx.doi.org/10.1594/pangaea.924849
https://doi.pangaea.de/10.1594/PANGAEA.924849
Description
Summary:Insoluble and soluble impurities, enclosed in polar ice sheets, have a major impact on the deformation behaviour of the ice. Large-, Macro and Micro-scale deformation observed in ice cores has been retraced to impurities in the ice, and therefore the exact location of the impurities is important. Over the years different techniques have been developed to analyse the location, and chemistry, of impurities and the following figures are examples of general methodological concepts.1_cloudy_bands_details.jpg displays a sample from a depth of 1917 m from the East Greenland Ice Core Project (EGRIP) deep ice core, NE-Greenland; the drilling has started in 2016 and is still on-going. A) shows a Visual Stratigraphy image, which was taken in June 2019 by Nicolas Stoll at the EGRIP drill site. It shows cloudy bands and the stratigraphy of the ice sample, covering a few years of age, and is used to count annual layers, and to derive information about the deformation of ice. B) and C) are microstructure maps of the same ...

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