Quasi-Monthly Beryllium-10 and Beryllium-7 Concentrations at Law Dome

Measurements of cosmogenic beryllium-10 concentration in firn span from the end of 2004 until the end of 2014, with sample sets generally collected in February each year. Beryllium-7 concentration data is included from mid-2007 until the end of 2014, typically spanning July to January. All measurements were made by the Australian Nuclear Science and Technology Organisation (ANSTO).

Use Cases

• Analyze the quasi-monthly beryllium-10 concentration record to study solar modulation of cosmic rays over a decade.
• Correlate the beryllium-7 concentration measurements with seasonal atmospheric transport patterns to Antarctica.
• Combine this beryllium-10 record with the Pedro dataset to create a continuous quasi-monthly proxy record from 2000 to 2016.
• Use the water isotope-based dating of samples to anchor the cosmogenic isotope chronology to the AAD DSS master record.
• Investigate the interannual variability in cosmogenic beryllium deposition by comparing February sample sets across years.

Strengths

• The beryllium-10 record provides a decade of quasi-monthly data from 2004 to 2014.
• Includes a complementary ~monthly beryllium-7 concentration record from mid-2007 to 2014.
• Sample dating is tied to the authoritative AAD DSS master chronology via water isotopes.

Limitations

• The dataset's temporal coverage for beryllium-7 is incomplete, starting only in mid-2007 and typically missing data from February to June each year.
• The exact sample count, measurement frequency, and data granularity (e.g., column details) are not specified.

Provenance

Source

Australian Antarctic Data Centre (AU_AADC).

Collection Method

Individual firn samples were collected, generally in February of each year, with measurements performed at ANSTO.

Time Range

Beryllium-10: end of 2004 to end of 2014. Beryllium-7: mid-2007 to end of 2014.

Freshness

Data collection concluded at the end of 2014, with the record last updated in January 2015.

Geography

Law Dome, Antarctica.