Evolution of sediment temperature, pressure, phases distribution, carbon pools and seabed

Arctic continental shelves are the geographic focus of this dataset, which contains predicted sediment properties and seabed methane emission rates from 18,000 years before present to 2,000 years after present. The data was produced by Kehua You of The University of Texas at Austin for a manuscript submitted to the Journal of Geophysical Research - Global Biogeochemical Cycles. It includes results from 8 different simulation scenarios, with predictions extending from the seafloor to 1200 meters depth.

Use Cases

• Modeling seabed methane flux over time based on predicted emission rates for 8 scenarios.
• Analyzing the relationship between sediment temperature, pressure, and methane hydrate stability zones.
• Studying the evolution of labile and stable organic carbon pools in Arctic sediments since the Last Glacial Maximum.
• Investigating the impact of pore water salinity and ice saturation on methanogenesis rates.

Strengths

• Covers a long temporal range from 18,000 years before present to 2,000 years after present.
• Includes data for 8 distinct simulation scenarios, allowing for comparative analysis.
• Provides predictions for multiple interrelated variables like temperature, pressure, carbon content, and gas saturation.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Kehua You, The University of Texas at Austin

Collection Method

Output from a numerical model described in the manuscript 'Biodegradation of Ancient Organic Carbon Fuels Seabed Methane Emission at the Arctic Continental Shelves'.

Time Range

From 18,000 years before present to 2,000 years after present.

Geography

Arctic continental shelves