Permafrost Core Volumetric Composition from Laboratory and CT Scan Data

A permafrost core drilled in a Yedoma upland in northeast Siberia (72.36613 N, 126.27272 E) in September 2017 provides the source material. The dataset contains volumetric measurements of ice, organic matter, mineral, gas, and sediment phases derived from laboratory analysis and X-ray computed tomography (CT) scans. It was created by Jan Nitzbon of the Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung to supplement a research article submitted to The Cryosphere.

Use Cases

• Validate regression models for predicting pore ice content based on CT-derived sediment phases.
• Compare high-resolution CT scan data with coarser laboratory measurements for method validation.
• Analyze the volumetric relationship between total ice, excess ice, and gas content in permafrost.
• Study the spatial distribution of organic and mineral components within a Siberian Yedoma core.

Strengths

• Data combines direct laboratory measurements with high-resolution (50µm) X-ray CT scan data.
• Includes a Python script for performing and evaluating the regression analysis described in the associated paper.
• Provides derived data files with regression-predicted volumetric contents at both coarse and high resolutions.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung

Collection Method

Laboratory measurements and X-ray computed tomography (CT) scanning of a drilled permafrost core.

Time Range

Core drilled in September 2017.

Geography

Northeast Siberia, Yedoma upland (72.36613 N, 126.27272 E).