Soil Flux and Gas Measurements for a CO2 Leak in Qinghai, China, 2014

The Australian Ocean Data Network hosts a dataset from a 2014 study at a CO2 leakage research site in Qinghai, China. It contains soil gas and soil flux survey data collected over an eight-day period to characterize the distribution, magnitude, and source of a CO2 leak from a wellbore. The research estimated a total CO2 emission rate of 649-1015 kgCO2/d and analyzed gas composition and carbon isotopes to identify the leak's origin.

Use Cases

• Modeling CO2 plume migration based on surface soil mineralization patterns mentioned in the description.
• Estimating total CO2 emission rates from a leak site based on interpolated soil flux data.
• Identifying the source of a CO2 leak using soil gas component ratios as described in the process-based approach.
• Evaluating the spatial correlation between CO2 and H2O surface fluxes observed at the site.
• Assessing the effectiveness of soil gas and flux surveys for leak characterization versus initial detection.

Strengths

• Data is derived from a published case study in the International Journal of Greenhouse Gas Control, providing academic rigor.
• Surveys employed two distinct sampling patterns (regular and irregular grids) for spatial mapping and interpolation.
• Analysis includes specific isotopic data (Carbon-13 at -0.21‰ and -0.22‰) to infer the CO2 source.

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 bias inherent to the single-site case study in Qinghai, China.

Provenance

Source

Australian Ocean Data Network, likely from the cited research article.

Collection Method

Soil gas and soil flux surveys conducted over eight days using portable multi-gas analyzers and laboratory analysis.

Time Range

2014 (eight-day survey period).

Freshness

Last updated 2026-04-10 21:50:02.683017; freshness should be verified.

Geography

Qinghai research site, west of Haidong, China.