Layer: Bathymetric LiDAR Digital Terrain Model for Dundrum Bay and Carlingford Lough

A pilot bathymetric LiDAR survey commissioned in 2021 mapped the nearshore areas of Dundrum Bay and Carlingford Lough. The dataset is a Digital Terrain Model created from that survey, collected by the Government Digital Service under the OGL-UK-3.0 license. The survey used a Rapid Airborne Multi-beam Mapping System (RAMMS) capable of capturing high-resolution data to depths of three times the visual water clarity.

Use Cases

• Modeling coastal erosion and sediment transport based on high-resolution seabed elevation data.
• Planning marine infrastructure projects based on detailed nearshore bathymetry.
• Assessing habitat suitability for marine species based on underwater terrain features.
• Calibrating and validating satellite-derived bathymetry models based on LiDAR ground truth.

Strengths

• Data was collected using a Rapid Airborne Multi-beam Mapping System (RAMMS) operating at approximately 25,000 range observations per second.
• The system achieved 3-Secchi disk depth penetration and, where possible, data was collected to depths of 10 meters.

Limitations

• Row count and file size are unknown, which may limit suitability assessment for large-scale projects.
• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

Government Digital Service

Collection Method

Airborne bathymetric LiDAR survey using a Rapid Airborne Multi-beam Mapping System (RAMMS).

Time Range

Survey commissioned in 2021.

Freshness

Survey was commissioned in 2021; last data update is unknown.

Geography

Nearshore areas of Dundrum Bay and Carlingford Lough.