MCA CHP 2022: Seabed Backscatter and Samples from NW Approaches to Liverpool

NW Approaches to Liverpool seabed data collected in 2022 under the UK's Civil Hydrography Programme. The dataset includes acoustic backscatter mosaics, seabed samples, and images, verified by the UK Hydrographic Office. Data was gathered using the EM 2040C system aboard the vessels Cerys Line and FPV Morven.

Use Cases

• Map seabed hardness and texture based on acoustic backscatter mosaics.
• Analyze seabed composition and sediment types based on collected H575 samples.
• Validate and calibrate remote sensing data using ground-truth sample images.
• Model seafloor geomorphology for infrastructure planning based on integrated backscatter and sample data.

Strengths

• Data verified by the authoritative UK Hydrographic Office.
• Includes multiple complementary data types: mosaics, physical samples, and images.
• Specific survey system (EM 2040C) and vessels (Cerys Line, FPV Morven) are documented.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• Data may reflect geographic and temporal bias inherent to the specific 2022 survey area.

Provenance

Source

British Geological Survey (BGS)

Collection Method

Collected via shipborne survey using an EM 2040C system as part of the Civil Hydrography Programme.

Time Range

2022

Freshness

Last updated 2026-04-09 08:29:28.404707; freshness should be verified.

Geography

NW Approaches to Liverpool, UK coastal waters.