2012 Ortho OSNI: Northern Ireland Shoreline Change Analysis Since the 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 rate-of-change statistics at 25-meter intervals. The dataset includes metrics like Net Shoreline Movement and Linear Regression Rate to visualize coastal retreat and accretion.

Use Cases

• Modeling coastal erosion and accretion rates based on the calculated End Point Rate (EPR) and Linear Regression Rate (LRR) statistics.
• Visualizing historical shoreline change over two centuries using the provided Net Shoreline Movement (NSM) data.
• Assessing total shoreline variability at specific coastal stretches using the Shoreline Change Envelope (SCE) metric.
• Incorporating shoreline uncertainty into change models using the Weighted Linear Regression Rate (WLR) statistic.

Strengths

• Analysis spans a long temporal range, from the early 1800s to at least 2012.
• Rate-of-change calculations were performed at a consistent 25-meter spatial interval along the coast.
• Data was processed using the standardized Digital Shoreline Analysis System (DSAS) methodology.

Limitations

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

Provenance

Source

OpenDataNI, likely based on work by Ulster University.

Collection Method

Analysis of historical Ordnance Survey maps and aerial imagery using the ArcGIS Digital Shoreline Analysis System (DSAS).

Time Range

Early 1800s to at least 2012.

Freshness

Last updated 2026-03-18 11:22:36.476637; freshness should be verified.

Geography

Entire coastline of Northern Ireland.