1978 OS 27 10K: Northern Ireland Historical Shoreline Change Analysis

Ulster University and OpenDataNI provide a historical shoreline analysis for the Northern Ireland coastline. The dataset visualizes shoreline change and calculates rates of change using statistics like Net Shoreline Movement and Linear Regression Rate, derived from Ordnance Survey maps and aerial imagery dating back to the early 1800s. Data was processed using the Digital Shoreline Analysis System (DSAS) in ArcGIS, with rates calculated at 25-meter intervals.

Use Cases

• Modeling coastal erosion and accretion rates based on Net Shoreline Movement (NSM) and End Point Rate (EPR) statistics.
• Visualizing historical shoreline positions and change envelopes for coastal planning and management.
• Applying weighted linear regression to shoreline data to account for measurement uncertainty in change rate calculations.
• Assessing long-term coastal change dynamics over annual to decadal time periods for climate impact studies.

Strengths

• Analysis is based on all available Ordnance Survey maps and aerial imagery, providing a long-term perspective.
• Rate-of-change statistics are calculated at a high spatial resolution of 25-meter intervals.
• Multiple statistical measures (NSM, SCE, EPR, LRR, WLR) are provided for a nuanced analysis of change.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and total dataset size are unknown, which may limit suitability assessment.

Provenance

Source

OpenDataNI, likely originating from Ulster University.

Collection Method

Historical shoreline analysis based on Ordnance Survey maps and aerial imagery, processed using the ArcGIS Digital Shoreline Analysis System (DSAS).

Time Range

Early 1800s onwards.

Freshness

Last updated 2026-03-18 11:22:29.239868; freshness should be verified.

Geography

Northern Ireland coastline.