Physical property measurements from snow pits and firn cores collected in Antarctica. The data includes density, permeability, diffusivity, and microstructure (grain and pore size) for snow pits up to 2 meters and firn cores from 12 to 30 meters. It was published by AMD_USAPDC on NASA EarthData and last updated in January 2004.
Use Cases
- Modeling gas diffusion in firn based on permeability and diffusivity measurements.
- Analyzing snow densification processes based on density and microstructure data.
- Investigating the impact of megadune topography on ice core interpretation using physical property profiles.
- Calibrating remote sensing snow property models with in-situ grain and pore size measurements.
Strengths
- Includes measurements from both shallow snow pits (2m) and deeper firn cores (12-30m).
- Captures multiple physical properties: density, permeability, diffusivity, and microstructure.
- Data is available in both Microsoft Excel and Adobe PDF formats.
Limitations
- Last updated 2004-01-20 23:59:59.999000; freshness should be verified.
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- AMD_USAPDC via NASA EarthData
- Collection Method
- Measured in snow pits and collected from firn cores.
- Geography
- Antarctica (inferred from description of snow megadunes)