CO2 Leak Soil Flux and Gas Survey Data from Qinghai, China, 2014

Geoscience Australia Data provides a dataset from a 2014 study of a surface CO2 leak at a research site in Qinghai, China. The data includes soil gas and soil flux surveys conducted over an eight-day period to characterize the distribution and source of the leak. The study estimated a total CO2 emission rate of 649-1015 kgCO2/d and analyzed soil gas composition and carbon-13 isotopes.

Use Cases

• Validate soil gas monitoring techniques based on the process-based approach using gas component ratios described in the study.
• Model CO2 plume migration based on surface soil mineralisation data mentioned as a proxy for historical leak hotspots.
• Calibrate interpolation methods for estimating total emission rates based on the irregular sampling grid strategy used.
• Assess spatial correlation between CO2 and H2O surface fluxes as noted in the survey results.

Strengths

• Includes data from two distinct sampling patterns (regular and irregular grids) for spatial mapping.
• Contains results from 16 soil gas wells analyzed with a portable multi-gas analyzer.
• Provides a quantified total CO2 emission rate estimate of 649-1015 kgCO2/d.
• Includes carbon-13 isotope data with specific values (-0.21‰ and -0.22‰) for source identification.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic and temporal bias inherent to a single case study from 2014.

Provenance

Source

Geoscience Australia Data

Collection Method

Soil gas and soil flux surveys conducted over an eight-day period in 2014, using portable multi-gas analyzers and laboratory analysis.

Time Range

2014 (specific eight-day period)

Freshness

Last updated 2026-04-30 14:03:17.843887; freshness should be verified.

Geography

Qinghai research site, west of Haidong, China