1967 OS 27 10K: Northern Ireland Shoreline Change Analysis

Ulster University and OpenDataNI provide historical shoreline change data for the Northern Ireland coastline. The dataset was created by analyzing Ordnance Survey maps and aerial imagery from the early 1800s onward, using the Digital Shoreline Analysis System (DSAS) to calculate rates of change. The data includes statistics like Net Shoreline Movement and Linear Regression Rate, measured at 25-meter intervals.

Use Cases

• Model coastal erosion risk based on historical rate-of-change statistics like End Point Rate (EPR).
• Visualize long-term shoreline movement patterns using the Shoreline Change Envelope (SCE) metric.
• Assess the accuracy of shoreline predictions by comparing Weighted Linear Regression (WLR) rates, which account for measurement uncertainty.
• Identify specific stretches of coastline experiencing retreat or accretion using spatially referenced change data.

Strengths

• Analysis is based on all available Ordnance Survey maps and aerial imagery, suggesting a multi-source foundation.
• Rate-of-change statistics are calculated at a high spatial resolution of 25-meter intervals.
• Provides multiple statistical measures of change (NSM, SCE, EPR, LRR, WLR) for robust analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale modeling.

Provenance

Source

OpenDataNI, likely originating from Ulster University.

Collection Method

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

Time Range

Early 1800s to the date of the analysis.

Freshness

Last updated 2026-03-18 11:22:37.880961; freshness should be verified.

Geography

The entire coastline of Northern Ireland.