Three years of data detail the production rates of 7Be, 10Be, 26Al, and 36Cl from water samples exposed to cosmic rays at Antarctic sites. The study, conducted by SCIOPS, involved extracting nuclides from 100-liter water containers for measurement via gamma counting and accelerator mass spectrometry. Data collection concluded around the year 2000.
Use Cases
- Model 7Be and 10Be production rates as a function of exposure duration (1-3 years) and site location.
- Analyze the effects of altitude and geomagnetic latitude on nuclide production by comparing Antarctic data with sites in Australia and New Zealand.
- Calibrate in-situ production rates of 26Al and 36Cl in rocks using measured water-exposure proxies.
- Study cosmic ray flux variations using nuclide concentrations extracted via cation exchange columns and measured by accelerator mass spectrometry.
Strengths
- Data includes production rates for four key cosmogenic nuclides (7Be, 10Be, 26Al, 36Cl).
- Exposure experiments conducted over a multi-year period (up to three years) at multiple Antarctic field sites.
- Study design incorporates comparative sites across the Southern Hemisphere to control for geomagnetic latitude and altitude.
Limitations
- Sample size is limited, involving water containers at a few specific Antarctic locations.
- The dataset is temporally stale, with the last update recorded in the year 2000.
- Unknown row count and specific column structure limit immediate analytical utility.
Provenance
- Source
- SCIOPS, via NASA EarthData.
- Collection Method
- Gamma counting and accelerator mass spectrometry of nuclides extracted from exposed water samples using cation exchange columns.
- Time Range
- Exposure periods spanned 1 to 3 years, with study completion around 2000.
- Freshness
- null
- Geography
- Primary sites at Ford Rock and Hooper Shoulder, Antarctica; comparative sites in Townsville (Australia), Dunedin, New Plymouth, and Mt Taranaki (New Zealand).