2003 Strategic Environmental Assessment SEA4 Technical report - Geological evolution pilot

A 2003 Strategic Environmental Assessment report from the UK Department of Trade and Industry describes a field of mud diapirs in the northern UK Continental Shelf. The report details the Pilot Whale Diapirs, mapped during a 2002 multibeam survey, which create a variable seabed terrain over an area approximately 60 km across. It provides analysis on the diapirs' dimensions, subsurface origins, and geological history.

Use Cases

• Modeling seabed terrain variability based on described diapir field dimensions and elevation data.
• Analyzing geological history and stability based on inferred initiation period and current activity status.
• Studying mud diapir formation processes based on descriptions of intrusion depth and buoyancy-driven mechanisms.

Strengths

• Report provides specific spatial scale, stating the diapir field extends over an area approximately 60 km across.
• Includes concrete measurements, such as seafloor elevations of more than 120m for the largest diapirs.
• Offers inferred temporal context, suggesting diapirism was initiated between 5 and 1 million years ago.

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

Department of Trade and Industry (now Department of Energy and Climate Change), UK.

Collection Method

Multibeam survey carried out in 2002, followed by technical analysis.

Time Range

Survey conducted in 2002; report published in 2003. Geological processes analyzed cover a period up to millions of years.

Freshness

Report is from 2003; data is based on a 2002 survey.

Geography

Northern part of the SEA4 area, UK Continental Shelf (North Sea).