Methane Flux and Geochemistry Model from Kazan Mud Volcano Sediments

Eastern Mediterranean Sea cold seep sediments provide pore-water and solid-phase data for modeling methane fluxes and anaerobic oxidation rates. The model constrains methane concentration and oxidation within a narrow 14-18 cm depth interval below the sediment-water interface. This dataset supports isotopic mass balance calculations indicating microbial biomass from methane oxidation constitutes about 20% of total organic carbon.

Use Cases

• Model depth-dependent methane concentrations and anaerobic oxidation of methane (AOM) rates using pore-water sulfate profiles.
• Estimate advective flow velocity from conservative pore-water constituents like Na and B to calculate dissolved methane distribution and flux.
• Analyze carbon isotopic compositions of organic matter and dissolved inorganic carbon to support evidence of near-complete methane oxidation.
• Predict asymptotic methane concentration and shallow gas hydrate formation rates controlled by ascending methane flux.
• Use indicative biomarker depth distributions to validate the narrow AOM interval and quantify in situ formed organic matter pools.

Strengths

• Model defines a precise, narrow depth interval of 14-18 cm for anaerobic oxidation of methane (AOM).
• Isotopic mass balance provides a quantitative estimate that microbial biomass constitutes about 20% of total organic carbon.
• Data is sourced from a specific, studied location: the Kazan Mud Volcano in the Eastern Mediterranean Sea.

Limitations

• Dataset appears to be a single scientific publication or model output, not a large, multi-sample tabular dataset.
• Core data like row counts, column names, and sample data are unavailable, limiting direct analytical use.
• Geographic scope is limited to one mud volcano site, reducing generalizability to other seep environments.

Provenance

Source

Geoscience Australia Data

Collection Method

Pore-water and solid-phase data analysis with geochemical modeling of measured profiles.

Time Range

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Freshness

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Geography

Kazan Mud Volcano, Eastern Mediterranean Sea