309 soil and core samples were collected from 44 sites in the Marble Point and Scott Base/McMurdo Station areas to examine permafrost properties beneath disturbed surfaces. The investigation, conducted by SCIOPS, compared soils from sites with recent disturbances to those with at least 30-year-old disturbances. Data collection involved pit excavation, drilling up to 2m depth, and field weighing to calculate moisture content, with some samples used for chemical analysis.
Use Cases
- Analyze the relationship between disturbance type (e.g., compacted fill, cut) and permafrost moisture content from field-weighed samples.
- Compare soil chemical characterization data from recent disturbance sites versus 30-year-old sites to assess leaching over time.
- Model surface recovery rates by correlating visual assessments of boot impact disturbances with the age of the site disturbance.
- Assess the stability of frozen ground features, such as those in bulldozer cut sections, using core sample data from up to 2m depth.
- Apply the criteria table for impact assessment to classify the severity of ground disturbance based on field observations.
Strengths
- Data includes 309 samples from 44 distinct field sites, providing a multi-location comparison.
- Explicit comparison between recent disturbances and sites with at least 30 years of recovery history.
- Sampling methodology included controlled drilling up to 2m depth and field weighing to preserve accurate moisture data.
Limitations
- Sample size is moderate (309 samples), which may limit statistical power for complex multivariate analyses.
- The dataset is temporally stale, with the last known update in February 1990, potentially not reflecting current conditions.
- Specific column names and data formats are unknown, complicating immediate analysis without further metadata.
Provenance
- Source
- SCIOPS, via NASA EarthData.
- Collection Method
- Field investigation involving pit excavation, soil and core sampling, field weighing, and visual site assessment.
- Time Range
- Study period not explicitly stated, but data reflects conditions prior to last update in 1990.
- Freshness
- 1990-02-09
- Geography
- Marble Point and Scott Base/McMurdo Station areas in Antarctica.