Laboratory-measured and X-ray CT-derived volumetric composition of a permafrost core

• Main Authors: Nitzbon, Jan, Gadylyaev, Damir, Schlüter, Steffen, Köhne, John Maximilian, Grosse, Guido, Boike, Julia
• Format: Dataset
• Language: English
• Published: 2022
• Subjects: Permafrost; X-ray computed tomography; Ground ice; Ice; permafrost; Siberia
• Online Access: https://zenodo.org/record/6397474; https://doi.org/10.5281/zenodo.6397474

This dataset contains data on the volumetric composition of a permafrost core which has been drilled in a Yedoma upland in northeast Siberia (72.36613 N, 126.27272 E) in September 2017. This dataset supplements a research article to be submitted to the scientific journal The Cryosphere. It contains the following files: volumetric_contents_sampleRes_lab+CT.csv Contains the volumetric contents of total ice, organic, and mineral measured in the laboratory at AWI Potsdam at a coarse resolution. It further contains the volumetric contents of gas, excess ice, and two sediment phases (A,B) derived from a CT scan at UFZ Halle, downsampled to the resolution of the laboratory samples. volumetric_contents_highRes_CT.csv Contains the volumetric contents of gas, excess ice, and two sediment phases (A,B) derived from a CT scan at UFZ Halle at the original resolution of 50µm. regression analysis_paper.py This pyhton script uses the above listed input files to perform and evaluate a regression analysis of the CT data against the laboratory data. The regression result is the composition of the CT-derived sediment phases (A,B) in terms of pore ice, organic, and mineral. The script furthermore computes evaluation metrics of the lab-CT comparison, and computes volumetric contents of pore ice, total ice, organic, and mineral at the high resolution of the original CT data. volumetric_contents_sampleRes_all.csv This file can be reproduced by the files listed above and contains, in addition to the data contained in volumetric_contents_sampleRes_lab+CT.csv, the volumetric contents of pore ice, total ice, mineral, and organic as predicted by the regression model at the same (coarse) resolution as the laboratory samples. volumetric_contents_highRes_all.csv This file can be reproduced by the files listed above and contains, in addition to the data contained in volumetric_contents_highRes_CT.csv, the volumetric contents of pore ice, total ice, mineral, and organic as predicted by the regression model at the same (high) resolution as the ...