2007 Ortho OSNI: Northern Ireland Shoreline Change Analysis

Historical shoreline analysis for the entire Northern Ireland coastline, derived from Ordnance Survey maps and aerial imagery dating back to the early 1800s. The dataset provides rate-of-change statistics calculated at 25-meter intervals using the Digital Shoreline Analysis System (DSAS). This digital asset was produced by Ulster University and is provided by OpenDataNI.

Use Cases

• Calculate rates of shoreline change based on Net Shoreline Movement (NSM) and End Point Rate (EPR) statistics.
• Identify areas of coastal retreat or accretion based on spatially displayed rate-of-change data.
• Model historical coastal dynamics using Linear Regression Rate (LRR) and Weighted Linear Regression Rate (WLR) statistics.
• Visualize shoreline position and geometry changes over annual to decadal time periods.

Strengths

• Analysis is based on all available Ordnance Survey maps and aerial imagery, suggesting a comprehensive source base.
• Rate-of-change statistics are calculated at a high spatial resolution of 25-meter intervals.
• Shoreline data spans a long temporal range, from the early 1800s to at least 2007.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the Northern Ireland focus.

Provenance

Source

OpenDataNI, with analysis 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 at least 2007.

Freshness

Last updated 2026-03-18 11:23:39.473353; freshness should be verified.

Geography

Northern Ireland coastline.