An eight-day survey in 2014 characterized a surface CO2 leak from a failed well at a research site in Qinghai, China. The data includes soil gas and soil flux measurements used to map high-flux zones and estimate a total emission rate of 649-1015 kgCO2/d. The dataset was published by Geoscience Australia Data and originates from research on monitoring technologies for geological CO2 storage.
Use Cases
- Calibrating soil gas monitoring techniques for leak detection based on the described process-based approach using gas ratios.
- Estimating total CO2 emission rates from surface leaks based on soil flux survey data and cubic interpolation methods.
- Mapping the spatial distribution and migration of CO2 plumes based on surface soil mineralisation patterns.
- Assessing the correlation between CO2 flux and other soil gases like H2O based on the observed spatial correlations.
Strengths
- Includes a specific total CO2 emission rate estimate of 649-1015 kgCO2/d.
- Describes two distinct soil flux survey sampling patterns (regular and irregular grids) for spatial mapping.
- References 16 soil gas wells installed for real-time analysis using a portable multi-gas analyzer.
- Provides carbon-13 isotope 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.
- Description metadata is limited; actual data quality requires manual inspection after download.
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 2026-05-14 04:17:03.461705; freshness should be verified.
- Geography
- Qinghai research site, west of Haidong, China