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

An eight-day survey in 2014 measured soil gas and CO2 flux at a research site in Qinghai, China, following a wellbore failure. The dataset includes results from two sampling grids and 16 soil gas wells, used to estimate a total emission rate of 649-1015 kgCO2/d and identify the CO2 source. Data was collected by researchers and published in the International Journal of Greenhouse Gas Control in 2016.

Use Cases

• Characterizing the spatial distribution and emission rate of a surface CO2 leak based on soil flux survey data
• Identifying the source of leaking CO2 based on soil gas component ratios and isotopic analysis described in the study
• Evaluating the effectiveness of soil gas and flux techniques for CCS leak detection and monitoring programs
• Modeling plume migration over time based on surface soil mineralisation patterns mentioned in the description

Strengths

• Data is based on a real-world case study of a CO2 leak at a dedicated research facility
• Includes estimated total CO2 emission rate (649-1015 kgCO2/d) and carbon-13 isotope values (-0.21‰ and -0.22‰)
• Employs two different sampling patterns (regular and irregular grids) for spatial mapping

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Data is from a single eight-day period in 2014; temporal coverage is limited

Provenance

Source

Australian Ocean Data Network

Collection Method

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

Time Range

2014 (eight-day survey period)

Freshness

Last updated 2026-06-04 06:29:09.346066; freshness should be verified

Geography

Qinghai research site, west of Haidong, China