Paleo Ice Stream Collapse Evidence in the Western Ross Sea

Marine geological and geophysical survey data from the Central and Joides troughs in the western Ross Sea. The dataset supports research into the rapid retreat and potential collapse of an ice stream since the Last Glacial Maximum, led by a project from the AMD/USAPDC. The data was last updated in May 2016.

Use Cases

• Reconstruct century-scale ice retreat history using radiocarbon dating data from sediment cores.
• Analyze geomorphic features formed at regular time intervals to infer ice stream dynamics.
• Interpret bedforms from multibeam and side-scan sonar data as evidence of rapid grounding line retreat.
• Correlate sedimentological records from the Central and Joides troughs to bridge isolated survey gaps.
• Investigate interactions between East and West Antarctic Ice Sheets using geophysical survey frameworks.

Strengths

• Integrates multiple data types: multibeam, side-scan sonar, and core data for a unified analysis.
• Focuses on a specific, ideal study area for investigating single ice stream dynamics.

Limitations

• Temporal coverage is limited to the period since the Last Glacial Maximum, with no modern data.
• Sample size and specific row/column counts are unknown, limiting reproducibility for ML tasks.
• Data recency is a limitation, with last update recorded in 2016.

Provenance

Source

AMD/USAPDC project, likely via NASA EarthData.

Collection Method

Marine geological and geophysical survey, including analysis of existing multibeam, sonar, and core data.

Time Range

Since the Last Glacial Maximum.

Freshness

Last updated in 2016; no stated update frequency.

Geography

Central and Joides troughs in the western Ross Sea, Antarctica.