1974 OS 27 10K: Northern Ireland Shoreline Change Analysis Since 1800s

Historical shoreline positions for the entire Northern Ireland coastline, analyzed from Ordnance Survey maps and aerial imagery dating back to the early 1800s. Ulster University processed the data using the Digital Shoreline Analysis System (DSAS) to calculate rates of change at 25-meter intervals. The dataset includes statistics like Net Shoreline Movement and Linear Regression Rate, providing a dynamic picture of coastal evolution.

Use Cases

• Calculate rates of coastal erosion or accretion based on Net Shoreline Movement (NSM) and End Point Rate (EPR) statistics.
• Model long-term shoreline change trends using Linear Regression Rate (LRR) and Weighted Linear Regression Rate (WLR) data.
• Identify specific stretches of coastline experiencing significant retreat or advance using spatially displayed rate-of-change data.
• Assess total historical shoreline variability using the Shoreline Change Envelope (SCE) metric.

Strengths

• Analysis spans a long temporal range, from the early 1800s to the present.
• Rate-of-change calculations were performed at a high spatial resolution of 25-meter intervals.
• Derived from multiple historical data sources, including Ordnance Survey maps and aerial imagery.
• Includes five distinct rate-of-change statistics (NSM, SCE, EPR, LRR, WLR) for comprehensive analysis.

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, with analysis provided by 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 to present.

Freshness

Last updated 2026-03-18 11:24:26.137730; freshness should be verified.

Geography

Northern Ireland coastline.